Document LgV2w73ab9jgMJBB1e6d3e0NQ

FILE NAME: Shree Digvijay (SDV) DATE: 1969-1970 DOC#: SDV002 DOCUMENT DESCRIPTION: Johns-Manville File on Shree Digvijay Cement Co. *L*T< *m -w * Mr. V.H. Somani Shxee Dlgvljay Cement Ranip Sabarmetl Ahmedabad 5, India Company Ltd. September 29, 1970 Dear Mr. Somani: This is to acknowledge your letter of August 31st which apparently t a long time in reaching this office. In reference to the possibility of measuring forming pressures on your pipe machine, I would like to suggest you to install on the hydraulic line going to the press cylinders a graphic register which could amplify the forming pressure time pattern. Theitaxe several manufacturers of this type register, such as Foxboro Co. and Bristol Co. These registers axe not expensive and are very helpful in relating pipe failures with forming pressure at the machine. In reference to increasing the diameter of the rubber covered press rolls from 4-5/8" to 5", I believe your machine operation will improve substantially if you do so. However I recommend for the manufacture of pipe over 5" you should consider rubber rolls similar to the ones you axe using in your RCM press section. In reference to the drawinngs on electrolytic stripping and sandblasting equipment, they were sent to you by Mr. S.E. Jastrremski on August 24th. I hops^g|||^|g^^|^|g||g^g|^id safely. Kindest regards, India, I would like to advise you that I program my visit to your company in early few weeks at your plant to assist you in bringing d. Sincerely, cc: R.S. Olson S.E. Jastrzemski R. Gomez September 8, 1970 Mr. V. N. Somani Shree Digvijay Cement Shreeniwas House Waudby Road Bombay 1, INDIA C o . , Ltd. Dear Mr. Somani: Further to my letter of September 1st, you will find attached credit to your asbestos account covering the funds due you for the J-M exhibit at the Madras Fair. With best regards, A. J. Steneri TELEPHONE OFFICE : 268241 (1 0 LINES) A- W orks at SIKKA, BOMBAY 15, AHMEDABAD, 5. BiglnjaiJ t m z n i C a m p a n u REGISTERED OFFICE : S I K K A , (GUJARAT) TELECRAMS JAMCEMENT BOMBAY TELEX : 2735-LOTUS BOMBAY A dm inistrative Office : SHREENIWAS HOUSE. WAUDBY ROAD, FORT. BOMBAY 1. BR. REP. DATE lad lepteaher, 10T0. I* S. 01m i Iiy Jekaa-Maariile ladle LiaiM It last 40th Street / mw i o n , m. y. io. i * U.S.A. \ Star Hr. 01Mm, \\ i~5/ 0 / V art pleased i# Mtt fna jaw latter af 14th Aagaat that y*, M|uia< by year vifi, art pitarnlag ta vialt ma la tha math af Yereaber, mad that yam m i d ta laadiag U Seabay ea tha Slat Oatahar fraa Hyderabad. Arraagaaeate hare Warn aade far aa air-eeaditieaed raaa far yaar safertable atay at Taj Mahal latel far tha mi|fcta iadiaatad by yam, Sa aim, we have arraagad far yaar geiag ta ihaadabad aa tha tad Weraaber aad retaraiag earn# day ereaiag ta ladtaya Tha aeetiaga with M/a. 0.S, B.P. aad athara have alM haaa fixed far 3rd Veweaber. At tha uaiat all are plaaalag to ha hare aa thia data. 0a ay ratara fraa tha Stataa X faaad tha factory faced with a 1ahear atrike, whiek mafertaaately aaatiaaad right apt# tha aiddla af Jaly. Thereafter, tha labaar n a adeptlag ge-alew taatiea. Thlags here iaprewed aaly aew, aad X kept that whatever X laarat la ay trip X weald he able ta iapleaeat meat af it la tha eeaiag aaatha - Saptaaihar/Oatahar - ae that vhea yam riait Ataadahad yam m y flad tha featery rammimg nth gaad pradaetlea aad alee effleieaey. X aaadar whether yea weald ha aeeeapaaled ly Mr.Ocms la this trip# haaaam he a i m rlsita ae aaaa a yaar, aad wa weald walea m hha ta ha with aa either la Saraahar ar Jaaaary/February aaat far a pariad af aaa week ar taa days. Kiadly eeafira. I hapa this fiada all af yea la heat af kaalth. Witk kladaat regards, Years slaaaraly, eat Hr.l.Oeaea ( V, Saaaal ) - September 1, 1'70 Mr. R.D. Tripathi Shrea Digvijay Cement Shreenlvss House Waudby Road Bombay 1, INDIA Co., Ltd. f-- Dear Mr. Tripathi: The following la the information on Separan that you requested iitf your letter to G. Rudln dated August 21, 1`.'70 (Ref: RDT:PB:1715). There are several other matarlala In addition to Separan NF10 tt. can be used as flocculating agents to improve the asbestos-cement pipe forming operation. We are not familiar with Separan AP30. You can use Separan NP20 but this la about twice as expensive as the Separan MP10. The following is a list of alternates and the suppliers: Separan NP10 and NP20 Dow Chemical Company Abbott Road Midland, Michigan 48640 Polyholl 295 stain - Hall Co. Inc. 605 Third Ave. Mew York, N.Y. 10016 Naleo Chemical Co. 6625 V. 66th Place Chicago, Illinois I would suggest that you first find out if these other materials are available before you try Separan AP3G. With kindest regards. Sincerely, cc: v.N. Soewni R.S. Olson R. Gomez S.E, Jestrzemaki ' 'TELEPHONE OFFICE : 52921 FACTORY : 6324 5 Ref. No. 6 $ * ? tjay Cement JA M C E M E N T BOMBAY * TELEGRAMS {{ JAMCEMENT AHMEDABAD JAMCEMENT SIKKA Company limited. O F F I C E : S I K K A . VIA. J A M N A G A R , '-(ASBESTOS PRODUCTS DIVISION) DIGVIJAY NAGAR, AHMEDABAD. August 31, 1970. Mr* R. Gouez, Johns-Manv l H e In te r n a tio n a l C orporation, 22 E, 40th S tr e e t, NEW YORK, N .Y .10016. My dear Rod, I have r e c e iv e d your l e t t e r dated 10th A ugust*70 in r i i $ v-. t o th a t o f n in e dated 10th J u ly and I an very th ankf u^*ve > you fo r a quick rep ly to ny in p o rta n t l e t t e r * v I have given th e l e t t e r fo r a d e t a ile d stu dy of ny in g D epartnent, but would lik e to eonnent, ju s t in n son s o f th e p o in ts fo r your c o n sid er a tio n * I f it is p ossib le for us to accurately neasure the pressure at the fo m a tio n o f th e p ip es b e sid e s the one a v a ila b le on th e Control Board, i t would in d ic a te whether th ere i s in fa c t any inaccuracy in the p ressu re red u ctio n because o f th e n ech a n ica l stop p ages on th e n a c h in e. I s h a l l a p p recia te i f you cou ld guide ne whether i t i s p o ssib le to neasure th is accu rately so that the n a tte r can be stu d ied in depth. In p o in t N o.2 , Ron have nention ed th a t 4 -5 /8 " d ia n e te r rubber covered press r o lls are too sn a il to withstand the forning pressure of 400 lb s.p er lin e a r ineh sta r tin g . M/s .C also ye a lread y reconnended to us th a t fo r nan ufacture 8% i t i s a d v isa b le to u se a 200 an d la p ress in the process of equipping ourselves w ith ^^ ^ J lalPpMssnRations o f your E n gin eering Departnent v l y Wl1n e c e ssa r y to r e -d e sig n th e p ress to avoid knurling a ffe c t and th a t your Engineering Departnent would have to charge ns fo r th e r e -d e s ig n . As and when t h i s is n e c e s s a r y , we s h a l l a d v ise you in th e n a tte r* Your a d v ise on R.C.M* Machine n o d if ic a t io n s i s e x a c tly in 0Wn th in k in E in fa c t we want to a o d lfy the RCM Machine u sin g th e sa n e p ress bean as haB been designed by you to u se th e h y d ra u lic p is to n as used on Calzoni as a li * " ^ drel haodlln extractor as per Oalzoni design and indigenous parts required fo r t h is change over have alread y been ordered out and we exp ect to r e c e iv e then in 2 o r 3 aonths and we would be a b le to d is c u s s t h is in nore d e ta ils during your fcrthconing v i s i t . 1 1ELEPHONE OFFICE : 52921 { FACTORY : 6324 5\icce jPiyvij&y Cement >.sfsaki O F F I C E SIKKA, JAMCEMENT BOMBAY TELEGRAMS { JAMCEMENT AHMEDABAD JAMCEMENT SIKKA Company limited. VIA. J A M N A G A R , ESTOS PRODUCTS DIVISION) Ref. No. DIGVIJAY NAGAR, AHMEDABAD. : 2 t In resp ect o f th e ad v ices g iv en by your Production Depart ments in M m v ille , Long Beach and Stockton P la n t s , i t has n o t bean p o ssib le fo r us to f u lly experiment o f the advices in v i r o f the uncertain labour con d ition s that have prevailed in th e Factory in the la s t fe v months. Apert from the s t r ik e , th ere has been oth er problems which we a r e slo w ly overcoming and we exp ect to s t a r t th e experim ents during n ex t mon-th.'*^' ,A- _ I am k een ly w a itin g th e d esp atch of e l e c t r o l y t i c s tr ip p e r and" v sand b la stin g equipment drawings* Have you d ecid ed about your v i s i t to In d ia ? . I f s o , kindly^ T ` ' inform me when i s th e programme* K indly convey my regards to Mrs.Semes and love t o your k id s . With kind reg a rd s, Yours s in c e r e ly , PH O N E : 268241 CABLE : JAMCEMENT Telc : LOTUS-2735 / $A V **f > RDT:PB:$715 'HREE d ig v ij a y CEMEN COMPANY LIMITED WORKS: SKKA - AHMEDABAD - BOMBAY. SHREENIWAS HOUSE, WAUDBY ROAD. BOMBAY-1. INDIA ltoesAugust 21* 1970 f*r Georgs Rudin JOHNS MANVILLj 22 East 40th Street uu * 6J*orVA, B,Y.1 0 0 1 6 INTERNATIONAL CORPORATION Dear Mr. Rudin, f S l S ? * ? 2" regard in g i f f 11 2: ^ . t you t o for manufacturing R a find"?h pro^ e **"a?t p ip e a t in d hahU ,t o f Soparan MPio s.p.r.n t.*;ppu:.nqSfiry J * I " AP30. Would you k in d ly l o t AWO could b . uaad in to obtln Se- Thanking you ,,, d w lth klnd,, t r. gard6i , ^ Yours s in c e r e ly , R .d . tripathi AH contract! A. J. Steneri N.Y. THE EXPO 19TO DISPLAY - INDIA As recommended by D. Poutiatine in his letter of July 9 S attached is our credit E-2290 for $3,529-23. This value representing the Canadian equivalent of US $3.,458.65 has been deducted from Shree Digvijay's outstanding account with A.F.D. No" doubt you will wish to .inform them accordingly. .. . D B H :ka enc:1 cc: D. R. G. D. Poutiatine S. Olson Read J. Colwell I n t 'l N.Y. J o h n s -M a n v il l e In d ia L im ited 22 EAST 40th STREET NEW YORK, N. Y. 10016 CABIE ADDRESS "J O H N M A N V Il' A ugust 3, 1970 M r. S. K. Somani " Shree Digvijay C em ent Company Lim ited Shreeniw as House Waudby Road Bombay - 1 INDIA D ear M r, Somani: T h is w ill acknow ledge and th an k you fo r y o u r le tte r of Ju ly 28, 1970 re f. R D T :A :l6 ll and we w ill be looking forw ard to the v isit of M r. G. N. Somani tow ards the end of this m onth. W ith kindest re g a rd s. S in c e re ly R SO /lvr bcc: D. Poutiatine R. Gom A. J. Steneri D. G. C olw ell G. Read R. S. O lson i, 70 h' P H O N E : '268241 CABLE : JAMCEMENT Telex : L O T U S - 2735 SHREE DIGVIJAY CEMENT COMPANY LIMITED W ORKS : SIKKA . AHMEDABAD . BOMBAY. SHREENIW AS HOUSE, W AUDBY ROAD, BOMBAY-1. IN D IA Ref.:RDT :A:1611 Date:j^th July 1970 THE JOHNS MANVILLE INTERNATIONAL CORPORATION 22 East 40th Street New York - N.Y*10016 U* S. Ao Dear Sirs, Attn: Mr. R.S.Olson We have pleasure in informing you that our Mr.G.N.Somani is proceeding on a business tour to the U.K. and con tinent as well as to the U.S.A. and Canada. Mr. Soraani would be in New York towards the end of next month for a stay of about one week. Hotel and other arrangements are being made by us direct. During his stay in New York Mr. Somani will contact you for discussions regarding our requirements of as bestos fibre as well as for promoting exports of our products so that the outstanding loan amount could be settled at the earliest. Thanking you, Yours faithfully S.K.SOMANI N O T E | A ll contracts thill b . tubjtct to tha .xcluaiv. Juritdlction of th. Court, in Bombay, and to th Arbitration law at In fore, in India, J o h n s -M a n v il l e In d ia L im ited 22 EAST 40th STREET NEW YORK, N. Y. 10016 CABIE ADDRESS "JOl A ugust 3, 1970 M r. S. K, Somani * Shree Digvijay C em ent Company Lim ited Shreeniw as House Waudby Road Bombay - 1 ' INDIA D ear M r. Somani: T h is w ill acknow ledge and th an k you fo r y o u r le tte r of Ju ly 28, 1970 re f. R D T :A :l6 ll and we w ill be looking forw ard to the v isit of M r. G. N. Somani tow ards the end of this m onth. W ith kindest re g a rd s. Sincerely, R SO /lvr bcc: D. Poutiatine R. Gomez A. J, Stenei4^ D. G. Colw ell G. R ead R. S. O lson P H O N E : 268241 CABLE : JAMCEMENT Telex : L O T U S - 2735 SHREE DIGVIJAY CEMENT COMPANY LIMITED W ORKS : SIKKA . AHMEDABAD . BOMBAY. SHREENIW AS HOUSE, W AUDBY ROAD, BOMBAY-1. IN D IA Ref.:R D T :A: 1611 Date: 2th July 1970 THE JOHNS MANVILLE INTERNATIONAL CORPORATION 22 East 40th Street New York - N.Y.10016 U. S. A. Dear Sirs, Attn: Mr, R,S,01son We have pleasure in informing you that our Mr.G.N.Somani is proceeding on a business tour to the U,K, and con tinent as well as to the U.S.A. and Canada# Mr, Somani would be in New York towards the end of next month for a stay of about one week. Hotel and other arrangements are being made by us direct* During his stay in New York Mr, Somani will contact you for discussions regarding our requirements of as bestos fibre as well as for promoting exports of our products so that the outstanding loan amount could be settled at the earliest. Thanking you, Yours faithfully S.K.SOMANI N O T E j All contracts shall b* subject to the exclusive Jurisdiction of the Courts in Bombay, and to the Arbitration law as in foree in India. P H O N E : 268241 CABLE : JAMCEMENT Telex : LO TU S-273S SHR ' DIGVIJAY CEMENT COMPANY LIMITED WORKS : SIKKA . AHMEDABAD . BOMBAY. SHREENIW AS HOUSE, W AUDBY ROAD, BOMBAY-1. IN D IA Ref.:RDT :A:1611 Date \ ,28th July 1970 THE JOHNS MANVILLE INTERNATIONAL CORPORATION 22 East 40th Street New York - N.Y.10016 U. S. A. Dear Sirs, Attn: Mr. R.S.Olson Q C i Q *fJ*r*' We have pleasure in informing you that our Mr.G.N.Somani is proceeding on a business tour to the U.K, and con tinent as well as to the U.S.A* and Canada. Mr. Somani would be in New York towards the end of next month for a stay of about one week. Hotel and other arrangements are being made by us direct* During his stay in New York Mr. Somani will contact you for discussions regarding our requirements of as bestos fibre as well as for promoting exports of our products so that the outstanding loan amount could be settled at the earliest. Thanking you, Yours faithfully rdt/pb S.K.SOMANI N O T E All contracts shall be subject to the exclusive Jurisdiction of the Courts in Bombay, end to the Arbitration law as in force in India. telephone OFFICE ; 52921 FACTORY : 6324 S{nnt JHymifty & i. 0 0 0 Cement . - /. JAMCEMENT BOMBAY 1 TTEELLEEGGRRAAMMSS |{ JAMCEMENT AHMEDAb a d Co mp a n y l i m i t e d . * JJAHMWCwEwMcEnNTisSiIKMKA R E G B . O F F I C E : S I K K A . VIA. J A M N A G A R . (ASBESTOS PRODUCTS DIVISION) Ref. No. VNS: 57 6 DIGVIJAY NAGAR A.HHMMEEDDAABBi=AAD. (In d ia ) July 10, 1970 Mr. R. 6o m i , Johns Manwille In ternational 22 E ast, 40th S tra et, MB TORE (U .S.A ) C o rn n .. Baar Mr. Gowox, - L T ! I i L r I S ; 1i S ' " " " r * **<** * . i t ,, ollM C i ! M * i 0 * * * ,h * I TM 1" * fo rM f m t M l i t k , , 1( I M o U , ,, lB TM " J J* * " 1 " * ^ t k i t I m U aenA a d a ta lla tf drawiM Jr* ,}* * Tartans fa in ts af tha baas lacln d ln a tha r a lla r s fa r th e fera a tio a a f tha y ip e . Raolosad .le a s e J b*** drawing which yen nay k in d ly sand to yanr t i l ! ?*, * Staok toB * Tan w i l l k in d ly eb sarra fr o n th a drawing th at th o y r a ssu r a generated at twa ends o f tha aaahlna is t r sa s w it tad thranghant tha U a g th a f tha bans and fa r th e r ta tha r a lla r s h e lp in g tha fe r n a tie n a f tha p ip e . I wanld lik a * ifrwa* le a fr a a yaw as ta whathar i t a a n ld ha J# r **r * tkB p r e ssn r e tran sfarrw d a t tha r a i l and for tha fa sn a tia n a f tha p ip e , baaIdas tha ona s r a i- c~ t r e l b#ard which " - * be " T * w e whathar b22* * 4b * f ig b t l i a s , so as ta aasnra th a t w ressare is u n ifarn ly app lied thranghant tha langtfa. i f sana acre d a ta !I s a re r e q u ir e d by yanr fr ia n d in S to c k to n , k in d ly w r ita t o ns sa t h a t wa w i l l ba abla ta fttm ls h tha s a . I f r t i r l i l t Z l L ? 2 ,**d tk a t y*2 w lU kim* U end ns tha dat a i l * * r t t w w l a i a f tha na*n!dr"als t ofr oanT ,tidha tkwinceasl.e n d a rin g and. T_h_olt* jj *k# d* 2 * il* ** Bd~ b la n tin g sy sta n ta da away w ith aJ* E * w lin g o f tha nan f e e l s . I haws checked nw hare and f ia d 2*r# *4ccccion s an t h is su b je ct in th e want, bnt unfor tu n a te ly s u f f i c i e n t ta c h n la a l dated I s wars n o t s ir e n to US tZ S - * . * - ' 1" * * *" h*r* VIth kind regards , E n el: Drawing Uoiecl Mr. V. N. Somani Shree Digvijay Cement Ranip, Sabarmati Ahmedabad 5, INDIA Company Limited, Dear Mr. Somani: I regret the delay in completing my analysis of the d< you gave me, but it because a more complex assignment I originally believed. Attached is a report on my findings covering the foil I. II. III. IV. Statistical Estimate of Product Conformance With Specifications Analysis of Relationships Between Various Product Strengths Analysis of Fiber Blends Used in 1969 Finer Strength Units in Mix Vs. Product Properties I wish I could report that my amalysis indicated an overall major cost reduction through lower fiber usage. Unfortunately, this was not the case. However, in Part III I have indicated some areas where reduced fiber might be possible if you are completely satisfied with your present product quality. Please note that these should be confirmed by trial runs ay estimates as final manufacturing pro major problem is to increase your overall as to improve the percentage of your pipe the minimum requirements. If this is to be improved, higher fiber contents, modified machine opera tions, product densification or more realistic specifications will be probably required. These items are discussed separately in each portion of my report. Page 2 June 17, 19?u Mr. V. N. Somani Ls I have made is of interest and help ,,. a s not 1 have copied Mr. Gome* and MTi: tne event that they might have additional comments to pass along. Very truly yours, W. c. Streib Manager, Asbestos Fiber & International Departments v cc: Mr D. Poutiatine, JM New York Mr R. Gomes, JM Now York---- - bcc: Mr D. T. Colton, JM New York luifi ANALYSIS OF 1969 -REE DIGVIJAY FIBER AND PRODUCTION DATA . I. 1969 SHREE DIGVIJAY PRODUCT STRENGTHS S S F T Z S J S g TM P PRDUCT C0Nr0RMANCE WITH SPECIFICATIONS The overall average~r*s*Lts tor the Calzoni and RCH Class 3 > -v j -> products were analyse^ tcTdeterrain the properties required to obtain various Recoveries as measured by the per centage passing the .vajr^us"; specifications. While this was not done in a rigorbu^. Rt^t^ptical manner, it is believed that the general cdncliu^brts^, reached are valid and that the specific numbers c R l c i & k e ^ reasonable estimates. ' .A sy / / \ A // The average 1969' fxecseusJuojijf^c&^ase 3 products may be summarized as follows / /a Obviously,/the major i eta lies in the product burst ^ '/ A \A / > ;x v <a \//'/ / / / y \ Figure- X-iliAastrates -el ' ' 2 00 / / y* mate fbf-- the C alzoni burst strength histogram assuming a normal distribution of values. On this ba8ia, it ;i$ afrviqus that the overall average burst strength must; .be materially raised to provide increased production recovery. j r ~r >i/a" ilx- y r From- hese statistical estimates, Figure 2 was prepared upon which were plotted the actual values observed cat average blends and - 1 ^r FIGURE 2 1969 PRODUCTION SHREE DIGVIJAY CLASS 3 PIPE Average Burst Strength Vs. % Passing Specification Calzoni Machine FIGURE 3 Average 1969 PRODUCTION SHREE DIGVIJAY CLASS 3 PIPE Burst Strength Vs. % Passing Specification RCM Machine AVERAGE BURST STRENGTH Kg/cm^ ANALYSIS OF 1969 .HREE DIGVIJAY FIBER AND PRODUCTION DATA PART I PAGE 2 sizes. The actual data distribute them- - *4* for ove eoretical line, again indicating the need average burst strength and the general validity of the assumptions made. Figure 3 provides a similar analysis for the RCM machine products. Note that, based on these assumptions, in order to have pass specifications, steps should be taken to raise the Calzoni products to an average burst strength of 235Ag, and RCM products to a level of 247 kg/cm2 . CONCLUSIONS 1. Average burst strengths have to be increased about 12 to 18% above their present levels in order to have in excess of 85% of the total pipe production pass the present 200 kg/cra2 burst strength. trength deficiencies may be due to one or Rowing: 1) machine operation; 2) fiber * * ve specification values - particularly in the smaller sized pipe. These will be discussed separately in following sections. ANALYSIS OP 1969 .1REE DIGVIJAY FItiER AND PRODUCTION DATA II. [QNSHIPS BETWEEN VARIOUS PRODUCT STRENGTHS Vs. Crush Strength The relationships between burst strength and crush strength are illustrated in Figures 4 and 5, which respectively describe the Calzoni and r c m products. while the data scatter, there is an apparent relation ship between these two types of product strength. At the present time, 88% of the Calzoni products the crush specification while 83% of the RCM meet Note, however, if the average burst strengths were set at the estimated levels to achieve 85% burst recovery, 95% of the products would pass the crush specification. Burst Strength Vs, Bend Strength The relationship between burst strength and bend strength |ong as the previous analysis. Note in le point scatter does not permit a sepaZalzoni and RCM data as was previously the however, once again, note that if the average burst strength were raised to an 85% recovery level, the bend strength recovery would be probably well in excess of 95%. FIGURE 4 BURST STRENGTH Vs. CRUSH STRENGTH CALZONI MACHINE CLASS 3 PIPE FIGURE 5 BURST STRENGTH Vs. CRUSH STRENGTH RCM MACHINE CLASS 3 PIPE 700 S3 El O 2 W os 600 Eh cn a: w o os u w o gw > < 500 - AVERAGE DATA BY BLEND A AVERAGE DATA BY PIPE SIZE --------- 1---:-------1----------1---------- 1_________ 120 140 160 180 200 220 AVERAGE BURST STRENGTH |______ I_ 240 FIGURE 6 BURST STRENGTHS Vs. BENDING STRENGTHS CALZONI & RCM DATA COMBINED DATA BY BLEND ^ DATA BY PIPE SIZE 500 BURST STRENGTH BURST STRENGTHS TO PROVIDE 85% OF PIPE PASSING 200 kg/cm^ BURST SPEC ANALYSIS OF 196: jHREE DIGVIJAY FIBER AND PRODUCTION DATA PART II PAGE 2 n*., point is raised by this analysis which Iful in improving the overall burst strength the following from the Shree Digvijay data: RATIO: Bend Strength Burst Strength Calzoni 1.72 ROM 1.58 Specs, 1.25 This is a most unusual situation. Normally, the ratio of u.S. pipe bend strength to burst strength is le 1, and in this case the Shree products even exceed^ the ratio allowable under Indian specifications. Since burst strength is in part controlled by the of fiber orientation around the periphery of the pipe, it may be possible that a portion of the bend strength excess could be transferred into burst strength if machine operations were altered. Perhaps, reduced vat agitation or increased machine speed might achieve this end. a r. Gomez may have some comments or suggestions to se lines. ANALYSIS OF 196 iHREE DIGVIJAY FIBER AND PRODUCTION DATA III, IR BLENDS USED IN 1969 .. ...Di^vijay fiber blends were analyzed to determine it thara wera any outstanding dayiationa in thair usage. labia 1 provides a s u m a r y of the estimated strength unit values of each blend and an estimated fiber strength unit content of each mix for each pipe site, m this case, the fiber strength units used in pipe - (fiber strength units of the bland)(t fiber blend used in mix) For a given pipe sise, there should be approximately same quantity of fiber strength unit, in the mix. large, this is the case and the fiber blends have fairly well balanced. However, certain blends have a tendency to be over rich and others look a little on the lean side. If Shree Digvijay wishes to try reducing the fiber contents of their mixes, recommended fiber usages are given in the following tahha However, shree Digvijay should note care- changes are not designed to Improve product They are made solely in an attempt to iah costs. Furthermore, major reductions in fiber usage such as in Blends 1, 3, and 10 should be ex`u-ined in trial runs before using as final manufacturing procedure, since it is quite possible that the estimates given may require further modification. TABLE 1 PRESENT SHREE DIGVIJAY FIBER BLENDS & ' or B-Lends Estimated Fiber S.U. in Mixes for Various Sized Class 3 Pipe Estimated SU of Blend FIBER S.U. USED IN PIPE* mix) used in ESTIMATED FIBER USAGES (Not Designed to Improve Product Quality SHT to Supply Possible Cost Reductions! ANALYSIS OF 1969 >~AEE DIGVIJAY FIBER AMD PRODUCTION DATA S IN MIX Vs. PRODUCT PROPERTIES strength units in the furnish mixes for the various blend. (Table 1) have been correlated with the average burst strength (Table 2) and with the average bend strength (Table 3) for various pipe sises. These data have also been plotted graphically in Figures 7 and 8. From Figure 7, it is very evident that the estimated fiber strength unit, in the various mixes correlate with prod burst strength, while the data scatter, there is , pa larly good relationship for the 50 mm pipe while all o sizes seem to disperse around another curve. In a aim! aanner. Figure 8 depicts the relationship between fiber strength units in the mix and bend strength. No suitable relationship was found between strength unit, and crash strengl as indicated in Part I, at the present time only 58-60% of the Class 3 products meet the burst strength specification. To r~ * " ""ft acceptance level, it would be necessary ^products having an average burst strength >M products having an average burst Deficiencies in burst strength may be due to: 1. Insufficient fiber strength units in mix 2. Insufficient densification of the products as they are formed. TABLE 2 SHREE DIGVIJAY TABLE 3 SHREE DIGVIJAY m Between Estimated Fiber Strength Units n Mix Vs. Shree Product Bending Strength (Class 3 Pipe) *RCM Machine Products FIGURE 7 FIBL'K s t r e n g t h u n i t s i n m i x ANALYSIS OF 1969 . J2E DIGVIJAY FIBEH AND PRODUCTION DATA PART IV PAGE 2 er orientation around pipe. (see remarks luct specification for smaller diameter pipes anything that could be done to improve any or all items 2, 3, and 4 would have a beneficial effect upon the economice of fiber usage, however, with the data available, it i. not possible to make any assessment as to what could be achieved by changes in machine operation. Actually, Mr. Gome, i, test qualifi, make such process recommendations. Hence, the following will restrict themselves to the possible modifications content required to provide the necessary product props) raise the recovery level from 58-40% to 85%. These a s t l l S S P a m g g _ t h i t_incre.,i fiber content would not lower Drnrt,, ,, ~ density significantly below their current levels. $uch decreases in density would further decrease product strengths, a few plant trials would be required to check this point out. Solely on the assumption that product strength can be improved 4 illustrates the estimated fiber quantities to provide an 85% product recovery. These _ ... rages of several analyses of the strengths achieved in each pipe size and for each fiber blend. Obviously, increasing fiber content in the mix is a severe economic disadvantage However, it is r.comnd.d that a few short trials be mad. at the elevated fiber contents to determine TABLE 4 E stiMATED FIBER QUANTITIES TO REACH 85% PASSING 200 kg/cm2 Burst Strength Specification ANALYSIS OF 1969 l JSE DIGVIJAY FIBER AND PRODUCTION DATA PART IV PAGE 3 | recovery does, indeed, reach the calculated nbty' ig the 200 kg/cm2 burst level. If they do >lem lies outside the scope of fiber utility and is probably more related to machine operation, product specifications or cement quality. - o c v C ^ C T W * . > V V - W l i O' T kV yCfa/* 1 | & U J II n & I caa/L i i 2 iq v / ? *- 4 VV fi>l f w l V io 244 (.r o LO 2 io SC -r ftduxA/i. V i 0 5 /3 -----=> W C jCrvwa ruA^> V w \t ie ili'5 -- S r/3 ci .34 213 < -\s 47 2 .1 2 ' 4 i Gl 0 i w /3 e Z iS iz f 3 ( . i `1 it HO b 220 3i 2 ?c 0 lE c /j 5 f\ Z ll ' ri Cv)JLV\lL 214 V t !-5 S4 2 ,-o g 3C r , 213 . io 24o A ie > L Co 2 0 -o 0 /b f\% fcW ^ 0*4/ . -L ^|jw u ' -- IWVL - no. lx..fcV| k u a ^ t c^-^L ^ * 6 - cxicx't 2 c c ^ A w - V H t 7 ZO A 1b4 7 204 ' 7 /4 V lH & l * U tX i ---- J 61 ic 140 JW %0A \ Z02 24 4 ^ 63 7 3^' o i^ J U 1<P 7 - `J t 1 l * i| Z o S \jL Qt 3 3C, 5>n jj| 2 i 3 | _____-- 6 S 21 2* .r _ _______ 4 * 1 ' s'^ w <* Cl _ ZoA 3 68 ; ^ )r-` 473j 208 * r& 3 4 a i* 6 5 4 :2 ,, a. i i TSf. I vv<r\AAj <KO e, MAAiorws^g -- IX'cv cl a^i. G1?Lo aj 1 3 57 3 \ &A 44 674 'ZA' | 23 ET6S Q pI^aacLIT 1c 673 I^C'C flo/3 dcy3 ^7? 6 0S Al Z> 9 3 `/ ----- -- .. 26 679 S r M 5 3'7 l8 c & <S1 'll /! QA-o 5" 6 79 !'V'( 1VAA^) 'A/'U. - V,|1V\>- 1v*. 1 ^ . V. ' Iw t cv ^Voc-Jncw _ n c - o ~ iv/v 4 70 Ami-- \^l ( V*) G U w j IV'iM 0 1am.7 <x Co? need i .. /*> 5oS Ibc 7? 'Ac .B2 Q \.(c C-8A C i6 'H 6 l r C `< 72-J 2? AG 7 550 40T ' 1 ^ 5 31 2ii 5S5 > i,-. .: 9t ']-- ---- -'--99- '2 | g?*N n ! 643 * ^<7,1 . n ^57 3 . OjJVxll. 431 2r*c ill 58 O SM Al 5) 6> oi>4 fe Gi 7 1 - ,, t> . "M 7 (ciG 9b a _ _ ______ _ Ih " 5 7 9 3 (' 4 34 ' 7c *i Al >44 ^ ' 6 78 6"& 7 j *7-4 8Ste 8~f<. 'r\ ^l<j IA/^JL -- fbUu. *^4, <a/U -- I\;c hit* //1l\'iiv~/c*K^ue ^ (Tclrv..t l**t 4S"C ur>M^ - K .^ r \ . Krc e w ^dU * fW f^UwA, vrt iiU jJl vm (M-PAa! IX QjjtuA * C.Uu4 x\. 1 (j)OKi*X|. i ;. io 7 V A 2.fa is % iso /a *9 11 43 6 1 . 5*33 ' 4 7 1 5 76 5Z3 ' 9hi 92 3 5 53 Ac -4 n < 5 33 5 37 9-c 7 5 `C *W 4 5 73' / ' * n 67/ ior-c \A 6 49 * 44Z; 2&A 99*9 ^ -1 2$ 41 5 2 4 ; | 83- j- l ...^ ; : 1 <75-^ 1 1 T 4 5 > 3Q j f 5*47* /OD 0 4 v 65*6 loo c !s ir : : 3-1 i g; ; ._ r "* 1jOO'O ' S _. AZ ' s ic , 5-*21-- 2 c `o gS* 7 7F . 551 5'4Z 443 '5 3 "?........ OoftAipJLt 9<f 3 '9*9 i3 ' 525" , 9 451 H'b Ac . 4f>3 11 -5 U lb !C foe - c 9o4 Kl 535" 4 407 4-2 x5 *0 i46 531 >44 15 7o 5-13 543 ?( |39 4^0 - ^-o /g ' 1 a 'c 50 " A 77$ : ?2*0 j 21. 52; r '* * i , 64Z ' ; 9o 5 5^6 1 ; 78*8 ItT: 1 <' 1 1 38! I '59o , "i is4 s ' * foC'O uz AO. ' 77, i i 374 1 -I ,44z> ` Cft 1 45 5 3 5 7Z, - -- +*mjL\ June 17, 1970 Mr. V. a. Soman1 Shree Oigvijay Camant Rnnip, Sabarmati Ahaadabad 5, INDIA Company Limited Dear Hr. Somanit S ^ dat* you gav " ia baing typad and will t h i J \ 2 l ?*il b* fe *nd of weak. However, at this time I am passing along ay recommendation as to the evaluation of the five-ton shipment of the new ST4T grade. de?eloiidrtoaiioiid* Par5 icular flber ?rade has been provide increased production rates. There- fr ' in its evaluation it should merely be substituted y ur formulations for JM S4T and determine if it provides iaprovad production rates. Next, it should Sa . v a L a ^ d ai^d I ? *"? comP*rad i performance with your Blend 4 which contains 10-15% Blue and 85-90% S4T it your available fiber supplies do not permit this type of J*iinSeiad *BlwuSeS 'anLdwBs4TV *in ?Bl"eJnld ;8uobr,tBilteantd^ 12.^ *<r We will be interested in the results you obtain. To date n i ^ i b e ^ g J L l l ! ? TM ^ V#ry intarMting r M u l t with this' Very truly yours, w. C. Streib Manager, Asbestos Fiber & international Departments v bcc: D. Poutiatine, JM Int'l R. Gomez, JM I n t n Yty (2 2 t ' S a i>`" ^ ' S s & ' e A , . / 3 >7 c ^ CK Vlxy **- * M ^ u v Cw^ *K-*'*v\6-/to S) ,, 5 ~h<L4 v-^y, ^ Afafc, f ^ O fek^<JL $ AjiJj&fa t Vv^V^w-ke-o,/ &K/\_ Ww^ a^ -- 3 L* ^ 'b ^ .J U ^ * ^^*-1 tW - H U o <Tto_v, ^ v,| ?JSv>^ >' W .J M j C/u"1 'rur?' 3 f e w j loi^f j k ^ 1^ ^ 1^ L<- 5 < w Qfexvy ^ A*-, J 1 T " . '"u w ^ j * % ^ ^t -* ve^; ^ ~ ~ t ^ ^ J ^ f rL^ U ' 1/fiA.u ly^Jhy^ r*1 . 2j ^ M C^J3 ^ f j fy_ ^ (j <hM fc^j f f v ry^ . ^-L^rUcft X ^ , $ *^sit * w * / tr^-k-frU tr ~ ^ Name; C.H. Thaker RESUME Ae : 40 years Date of Birth; July 17, 1930 Nationality; Indian Type of Visa Holding; Immigration Visa (Permanent Residence) Registration No. A30 233 169 Educational Qualifications; Institution Shree Fellowship High Ahmedabad, India Period of Study '44 - '48 Exam Passed Division Obtained Matriculation Second Faculty of Technology and Engineering M.S. University of Barode (Same) P.W.D. Bombay, India State Government of Gugarat '48 - '52 '52 - 153 Permit 1962 Diploma in Electrical Engineering Second Diploma in Mechanical Eng'g. First Competency certificate of First Class Electrical Supervisor First Class Proficiency Examination for Mechanical Engineers I can speak, read and write English, Gugareti, Hindi Professional background - Organization 1) Calico Mills, Ahmedabad, India 2) Arbuda Mills, Ahmedabad, India 3) Cellulose Products of India, Ltd. Ahmedabad, India Position Held Engineering Supervisor (6 yrs) Assistant Engineer (1-1/2 yr) Assistant Engineer (2-1/2 yr) 4) Shree Digvijay Cement Co. Asbestos Division Pipe Plant Superintendent (7 yrs.) Details of Experience: 1) Calico Mills & Arbuda Mills Erection of Textile Machinery in different process their repairs and maintenance. Installation of Electrical cables, transformers, switch gears and automatic control panels of different machines. * Maintaining and controlling the heating and humidification plant in spinning and weaving department. P Supervising the fire tube and water tube boilers. 2) Cellulose Products of India Ltd. - Carried out erection of the complete plant put that into commission and looked for the repairs and maintenance of the plant. 3) Shree Digvijay Cement Co. last job I was responsible for running the entire pipe making plant from its raw material feeding section to the finishing^tage Ours is a completely automatic system where the fibre treatment ' feeding and mixing are done automatically and slurry formed out'of asbestos ibre, cement and water is passed to the vat from the material is conveyed by an endless felt and pipes are formed on the steel mandrels n lamination system. The pipes are made under heavy pressure capable luikJeIB.Ss.SS., I?.VS,.S1.1, ^A.YS.iT.SMO.rOUetSc.teStThSe swpheoclleflecdirc"uitStiLnatrhde pSrpocaescs i o u s is automatic and every operation is handled at the control board. This involves highly complicated electrical systems such as relays o b t ^ n e d ^ Sh f c - , Pressure required in the formation of the pipe i s t S i s c i r c u i t ! hydraUllC SyStem- 1 am f u l l y conversant in operating ^ r o n ^ s b ^ L ' 0^ ??n,nenced1in 1962 we having one pipe machine and one sheet machine supplied by R.c.M. of Italy, m 1966 during thr Plant 3 second PlPe machine was completely built with the help of many Indian companies under my supervision. This :ir P Y " 0" 'Mchi`,er>' from calzoni, opiipoe. plant m prod!uctitoln0.n "as d0" b>' " and I put the whole second Of S b^i!Wieihj^ -n iPeAAl5sUornwien8hhaavned pCuUtttitnhe cloautphelsinginmapcihpienefiinniswhoirnkinsgection ondition with the modified automatic circuit as per our required design and with more output. We have a steam curing system wherein the pipes are autoclaved for better strength and early delivery. t0r I have gained thorough knowledge in the choice of best quality fibre r quality production and economic fibre formulation. During this period of service I had the opportunity to work urder the technicians deputed by our Collaborators in USA and also with the engineers of the machinery suppliers. f n / t h * l A967/ laS selected frora a rouP of Engineers in my company for the study of the working of asbestos plants in Malaysia, with ? wessrs. Hume Industries at Kuala Lumpur. I spent one month in their Asbestos Cement factory for better understanding. Also I visited their Singapore plant. This has enriched my technical knowledge and working of asbestos mcustry in different conditions. a W.C. Streib Finderne J-M International New York, N.Y. June 11, 1970 I am enclosing herein the analysis I made some years ago to establish the pipe thickness for Shree Digvijay Cement Co. I hope this information will be of help to the analysis you are making on Shree Digvijay fibre formulations. Please let me know if you need any other information. Enc. R. Gomez * .' fry s i &o o o vf}onJ o u--o1t U l vn ?-> o /v-i V6 on t- Vr* M o C5> t- Oo IO Vo v<. ' o c S V-v w fci V *k v> V ' Vj v-.5 VI , V\. r k\`i` !?i-v>. If' ftj i? Ff j C'J " c.i t" O r>. VS> str t r:; fo iA li M i t! /> 5-1 f I i*,n *.), 'S<i t-'y (> ;> ,, *> a O ?>w f , i: o r> cir) ti i;:- d i< r C.' O 0c'- Of-*- <H.'/ o cOv hf A(;}/>> h' H f t5/;! ,, Ci's l *-4 o' 10 U' trvi J-J K`O CO ['O' .n k !r:. f!*!CPfJ.l jv v--' f'i [** Vj X S' ('3 t; jn Su :f t / M rt.*O r!.. V;' U Xj Q 1'! Fj 3* f o ri i.' w r-' fj o*< o ff* : * O ;.j^j<-*v U % -t C* v*' ' 0 :o f ; r, o H' O' `{J;- o oo JV v ,k` - -J C' > V J';, f> r> <- ?J f'~- -J - V..y- t: 0(5 ?,i; o -} k CJ I-- ^ is /> * <- C*' o P ;.b t; o co u N to tv J* * K. { c> h ? o f-' v * v~v * ;) t S t0*1i in.l [/ PH f. ^^) ti ll H O l'/ rOIP-J <j-;; o ; 1, O fi>-.- J<~' k\* ti ci* Cl V 5" o'* <0}f a JJ f- ; O L- ;"* P H `i Pc.-*P,; ( g \i o ^ ro P LvJ l b te c; -1 #"> t..J* v ;i b,-i h 01 C*j c> ' t-0 i1? vn !:? \1 VO r, ^ c4 'o O'; C/ t t j; ii Values li^ T> V,dj.-uys -iri -''-r .Of nu^^r: o*:.oi;a*.ra 5pr*i-nT.c;.o;.v-'ur1 d To TniCteVSjfc: Of f-... USiJi'r* J Ui'O JO rdb TLDU li-iidr; B O ., _ .; . D e Burov^;: .: .. - o* t& b le Bo. i ff *3 Values for Sur&tias rrtse tu rc > c s z i^ d T3 Client io a A'Xi.-Od.,**?.* ixTliiCl#T!T-:-tl i.C'-'Z' j? sr^cr,!-.wa uioitw. Tj iia it. adopted .for pur;>o$e .-,j\ thj fitter, of plp^o, avjrj '.>*-sx' r'iva d.iJov.i.ju.",3 ** Xv./ r/tiii b*Ga -O C -uiU 'X rjg 1-23G a l l o f cJU t^j i.a-i^-TuUtU^ i ;i ^ r r x r O u .< - i x i y * \~ i p i p e : 1 0 ;t*ca a r * s 'V -n s ^ p u c ix liy p *4a*"C3 O x ci,r:$v c i-oXvStio o.ir-3 ,w .l3Jtxxiia'L;2cP ic^rsas^o Sie Tolerances ax^e fijusd by shs i-ndi^n Sx^rdord fip-3cifica*c:^Xi3c. \ zJ r\ VJ cs ii *vv Tv. ; \: ' C-i <N K . i, V i A> Sr A v} "*5 3 U V i _.> fr V * '> i ? ^s i ^ . , > < j i <x i C N X V} X j t . ., . . ,, . .{ C-;X ? - ' ' A \ 'V C o ftj j v. * | x i <-0 X j i e o <Xj x . I v "_ * *5 * A I -'d K td?cS 'S \S | ^ *5> v>'0jo|^ I v> ui 'Z c6i^>\ i u *? ^ 'i S Vi * 51 i f vs _ x < ? **0 ? S i iJ I Vi S'-- - .S.i 1 V A i if ^ v > - s; v U X xS\isl 3 o%' l iz i ! ^ i i $i v * | S' v <r ? 5 ^ t A ? >! 4 M ' |J < *i ,..' x s\ . s? ^ V) I *, ? ? 5 ^ MI I . `7 x ^ o x . Cl x X Cs'>*;j s x x x. y : *r.r i 1 sj jj \i* o M lv S ff 3 s cvsi i '\ l **J ?VJ CO i?) \;> v* i , ^ r ^ - s j w s ^ ^ - s i 3r5A -?Wo < ' * s s B ^ * -a i \ rjBtr? i u. J Si ">t `ow 5 !cf 3U Si 0 o J' y -d 'e 7 r , - - j _------_--_--_-_--_--_--_-_--_---------- ------------------------- K i l N - s 2 a $ i X , x J i & j l A o '< S i i ? o <5 ~ a ^ ,,s ^ ^ so 0 A '$; A Xf Ki ft o li) A 'S* C'nv,| ^ 'Si1>')Ic-' Q 'Cj A *5 O O-- r- CV t e l e p h o n e o f f ic e 263241 (10 LINES) siJr** W orks at SIKKA. BOMBAY 15, AHMEDABAD, S. REF.------- ------ * n u n t BEGISTERED OFFICE : B I K . ( GUJARA ) TELEGRAMS JAMCEMENT BOMBAY TELEX : 2735-LOTUS BOMBAY A dm inistrative Office : SHREENIWAS HOUSE, WAUDBY ROAD, FORT, BOMBAY 1. BR. d a T_j9th_May4_-127-& International Corporation 22 East 40th Street \ NEW YORK N.Y. 10016 V, U. So Ao Dear Mr. Gomez. thp entire tour of I did enjoy t o Y to have spared mine in the States and 1 am your time and to hare given 7 OUI * operations. * 1 fpoi feel that xna it excellent education for me. me a wpals a ^e rtunity to see your Asbestos ppo opportunity and an verajrccept m y "v e r y -incere sincere thanks for this. On nr re torn, I x s u . a. r e,,irih: t `:t oEa r - and this has also put the plan Please convey my regards to your : r ^ ' . r tf;itr,rtf.'" ^ i p.err-nch f ^ - * * - "u`- tSat^W -- -** With kind regards, Yours sincerely, ( V. N. ilANI i _ -.Nr. JJIjree Work# *t SSU. BOMBAY IS, AHMEDABAD. I. IV. .uEwRAMS ;AM CtM ENT BOMBAY 'ZLEX 2735-LOTUS BOMBAY d t m z n t QDnmpanti %imxttb Admiaifttrativ* Offloa : WREENIWAS HOUSE, WAUDSY ROAD. POST, BOMBAY 1. SB. D A T E 29th May, 19T0. W. C. Streib, Esq. Research Manager Asbestos Fiber & International Johns-Manrille Research & Engineering Centre P.O.Box 159 Manville, N.J.08835 U.S.A. RECEIVED Depts. JUN a m ISBBTGS FIBER DEPARTMENT, Dear Mr. Streib, Very nice ef yen to hare written * letter on the 10th April, which I could only see after ay return froa the roundthe-world tour. I would say that I did enjoy the tine spent with you in the Research Centre. It was quite interesting to discuss with you the fibre probleas. By now, you any hare analysed the rarious data giren to you, and I leek forward with keen interest to receiving a detailed report froa you as to how ay operations are and how can they be iaprored upon. I would also be glad to hare your rocoaaendations on the evaluation of the fire-ton shipment of the new ST4T grade. You would be pleased to note that new allocation of foreign exchange has been just released by the Government of India and in the next few weeks I hope to get the iaport licence and to place f/^fira orders on the suppliere. Yours sineerely, ( Y. N. 90MAB1 ) Mr. K.V. Ramaaashan Shree Digvtjay Cement Ranip Sabarmati Ahmedabad 5, INDIA Company Limited May 27, 1970 Dear Mr. Raaaseahan: This is to acknowledge your letter of May 2nd with reference to the manufacture of 50 m m diameter asbestos-cement couplings. We definitely advise you to use C.I. Joints for your asbestos-cement pressure pipe on 50 mm diameters. We feel there will be some difficulties in the manufacture of this small diameter coupling. In the U.S. we produce a very smell amount of 2" diameter asbestos-cement pipe. However the utilization of this pipe is not for high pressure but normally used as an electrical conduit. The couplings we produce fttB this non-pressure pipe are only sleeves manufactured in special coupling \ lathe*. - ' ;:j|**ill advise you to convince your customers to accept C.I. joints in .. . orders of 2" diameter pressure pipe. r ' With kindest regards. Yours sincerely \ % R. Gomez Research & Engineering Center May 7, 1970 R. S. Olson, Int Specifications for Shree Digvijay Cement in.--| -I-.., | |||ii||ini`^ <' " i ' Request of R. Gomes A. C. Pennewell relayed request of Mr. Somali, Managing Director of Shree Digvijay Cement Co., for Manufacturing Specifications and Finished Product Specifications during R. Gomez" recent visit with him to Pittsburg plant in a letter to W. M. Rogers dated April 23, 1970. I reviewed this request with R. Gomez on May 6 and he stated that this was in accord with our technical assistance agreement with Shree Digvijay Cement Co. In compliance thereto, I enclose copies of the following speci fications requested by Mr. Gomez: MS 4211 Standard Asbestos FLEXBOARD -Pages 1 and 2 4222 Corrugated TRANSITE -Pages 1, 2, 3 4211 Standard Asbestos FLEXBOARD -Pages 1 through 8 4222 Corrugated TRANSITE -Pages 1 through 9 mp Attachments (^ cc: R. Gomez, Int - GH A. C. Pennewell , Ptsbg Pit W. H. Graham W. C. Streib L. Meserve Ht-.. V:~ IN'f/ I 9 TELEPHONE { OFFICE FACTORY : : 52921 6324 S h r ee liyiujay Cement REGS. OFFICE SIKKA, JA M C EM EN T BOMBAY Company l i m{ i t e d . TELEGRAMS JA M C EM EN T AHMEDABAD JAM C EM ENT SIKKA VIA. J A M N A G A R , (ASBESTOS PRODUCTS DIVISION) DIGVIJAY NAGAR, Re/. No. XVR: 1 ECH: 3 f t 1 May 2 , 1970 AHMEDABAD. (India) Mr . R. Gomez, Johns M anville I n t e r n a t i o n a l Cor 22 E a s t , 4 0 t h S t r e e t , New f o r k lT. S . A Dear Mr. Gomez, As you know we a r e manuf a c t u r i n g 50mm d i a . p i p e s on t h e C a l z o n i m a c h i n e . One o f t h e S t a t e s i n I n d i a - U.P - l a v e a s k e d us t o s u p p l y even 50mm d i a p i p e s o n l y w i t h A. C. Coupling. With t h i s very small d ia m e ter, the th ic k n e ss o f A . C . c o u p l i n g t o be m a n u f a c t u r e d i s v e r y h i g h and t h e r e w i l l be i n n u m e r a b l e d i f f i c u l t i e s i n m a n u f a c t u r e . We h a v e t h e r e f o r e suggested to th e Chief Engineer of U.P t o aveept C . I . J o i n t s b u t he h a s made a r e q u e s t t h a t we s h o u l d a s k Johns Manville Corporation whether i t is p ra c tic a lly possible t o raai u f a c t u r e 50mm A.C . c o u p l i n g . I am aware t h a t JM do n o t m a n u f a c t u r e t h i s s i z e o f p i p e s but s h a l l a p p re c ia te i f i t would he p o s sib le fo r you to write t o us a n a p p r o p r i a t e l e t t e r so t h a t we c a n a s k t h e Chief E n g i n e e r , U. P t o u s e o n l y C . I . J o i n t s w i t h A . C . p i p e s . Thanking you, |urs s i n c e r e l y , . V.Re i Pittsburg Plant April 23, I970 W. M. R oge rs - REC cc: R. Gomez - GHQ. - I n t ' l . REQUEST FOR SPECS On April 22 V. N. Somani, Managing Director of Shree Digvijay Cement Co., Ltd, Bombay, India and R. Gomez, Group Foreign Project Engineer of the International Division vi sit e d Pittsburg to review the wet machine operation. ` I understand we have a f u ll technical assistance agreement with Mr. Somani's firm for asbestos cement pipe and sheets. Mr. Somani re quested a copy of a ll our Flexboard and Corrugated manufacturing and finished product specifications. We tried to copy our specs on our Xerox machine but it would not reproduce the purple di t t o print on the spec sheets; therefore, we are requesting that you furnish one copy of a l l the subject specs to: V. N. Somani, Managing Director Shree Digvijay Cement Co., Ltd. Shreeniwas House, Waudby Road, Fort Bombay, India Please advise i f you cannot meet this request for any reason. A. C. A s b .^stos d S.-A.. Apartado Postal No. 4 T lalnepantla, E d o . d e / v \ * x ,co DlRECClON GENERAL February 5, 1970. M r. V. N. Somani Shree Digvijay C em ent Company Ltd. o h ree Niwaa House Waudby Road, F o rt, Bombay - 1 INDIA D ear M r. Somani: Aa you are aw are. Aabeatoa de M exico s A u. . 7. r . r z T : t : ith c . , . , lo z >'**' * * ub,t*'" 1*1 -- -- " -hi=h bu.i,,...i." t P ; ; r llr TM d,nouid,d produc,` r lr prr `'c',^^ ^ buudb> important that totfuU riM " y e r >r in thoir opinion, eoulrt s... v a ,r r c o m p a n y . Thia, fa c to r yy . Wnree aa rre. hhaTpop"y t,o*invitedy"ou *to hm*a'rkI,e,th1TMis>v*is it . Yours cordially. ___ ^ C l^ ge MurguJk^Blancarte G eneral Qfcfcctor. v lm. cc . A. g * Steneri File ^ C h ro n o . February 4, 1970 Mr. K. v. Ramaseshan Shree Digvijay Cement Co. Ltd. Ranip, Sabarmati Ahmedabad 5 , India YOUR REFERENCE: 693 Dear Mr. Ramaseshan: .-sV'.- * '\ l We are pleased to acknowledge and comment upon your letter gS^'-S"?January 28th providing rubber compound test results supplied Ita ' Synthad Chemicals P. Ltd. The test results appear in the appended tables with measurements expressed in English units of measure. These results are compared to Johns-Manville standard values for rubber rings. We note that report numbers 8/300/31 and 7/70 do not define the test methods employed in evaluating the rubber compounds. However if we assume that the test methods employed correspond closely with those that we employ, we conclude that the samples provided by Synthad Chemicals are entirely satisfactory. We believe it was quite appropriate to projlde Synthad with a copy of purchase specification number TR238 which outlines the physical properties required of rubber rings used in the joints of water pipe. We believe it would be extremely helpful to them if a copy of specification TR2303 was also provided. This write-up d e s c s employed in evaluating rubber rings. A gpy/ t t ^ p > i p | ^ H | ^ p | ation should accompany rubber ringgsamples . laboratory for evaluation. The laboratory instructed to employ the test methods described in cospared to TR2308. Departures from standard^MKXdNMPoiPlfully reported by the laboratories in the#r reports. We have appended copies of specifications TR2303 and 'FR23Q8 for your reference. Note it will not be possible for laboratories to conduct all of the tests described in specification TR2303 because specialized equip ment is required for certain tests. We consider the following rubber test methods of TR2303 routine and well within the competence of the majority of laboritories: test nM}*bod la or lb, 2, 3, 5, 6, and 7. The properties determined by these test methods provide the essential data required for the evaluation of rubber rings. Best regards. Very sincerely. George Rudin LABORATORY RIKHO NO. 8/300/31 DATED JANUARY 15, 1970 TEST COMPOUND Tensile Strength, psi Elongation at break,% Hardness, Shore A2 Tension Set,j| 3,780 600 55 3.125 ROUND CURED SLABS JOHNS- MANVILLE TEST METHOD REQUIREMENT 3,360 No.l a (ASTM D412) 2,000 minifflUB 575 No .lb (ASTM D412) 350 minimus 57 n|. 2c(ASTM D676) 57+5 3.126 No.le(ASTM D412) 10%maximum Tonsil Stpjtngth, %change Hardness change, Shore A2 -5.6 4-6 FOR 168 HRS. AT 158F -4.5 NO. 2a -15.5 NO. 2b +5 NO. 2c -is i f f w w i r ''f ` -21 masslmui ' 7 maximum LABORATORY ttfKORT NO. 7/70 DATED JANUARY 17. 1970 TEST ' SAMPLES BEFORE AGING JOHNS- MANVILLE TEST METHOD req u irem en t Tensile Strength, psi No. la 2,000 minimum Elongation at break, % 598 No. lb 350 minimum 3001 Modules 1,220 No. Id 1,200-2,300 Shore Hardness 49 NO. lc 57+5 v/ ' V1*--' Hr' ' ' ' SAMPLE AFTER AIR AGE 168 HRS. AT 158F Tensile Strength, %chasge *4.42 No. 2a Elongation at break, %change -19 No. 2b 300% Modulus, %change +42.6 -- Hardness change +7 No. 2c J *y 'w1 --> *. . -15 maximum *25 maximum -- - +7 maximum I I TELEPHONE OFFICE : 52921 { S h r e # B i y u i j a y FACTORY : 6324 ,/ /i<4 ft:. OFFICE ('A S B E S T O S Ref. No. ;C V R s T E C K : ^ A,iT-r . G e o r g e R u d i n , Johns M anville In te rn a tio n a l 2O2O ETTda s4t-, 4H/0Mt1h,, rStxt.r.e e t., New N o r k IT.3 .A C orpn., * J ay TELEGRAMS {JAMCEMENT JAMCEMENT JAMCEMENT BOMBAY ahmedabad SIKKA limited, anuary RAN1P, SA B AR MATI , A H M E D A B A D - 5. 28, 1970 Dear Mr. R u d in , K i n d l y r e f e r t o y o u r l e t t e r d a t e d N ovem ber 1 1 , 1Q69 y o u h a v e m e n t i o n e d t h a t n o f u r t h e r t e s t n e e d b e d - n e j .... samples of ''ynthad C hem icals P v t . l t d . in view & f1a0 c t t h aut t h e P e r c e n t s e t r e c o r d e d f o r t h e i r s a i r p l e s 19-4* w h ereas t h e maximum a llo w a b le is 16# and t h i s p o o r a g in g t e n d e n c i e s w h ic h w o uld a f f e c t t h e h y d r cbt M fc' ^ ^ performance of rubber rin g s jo in ts in w ater pressure p ip e . S i n c e t h e n we h av e had d i s c u s s i o n s w i t h t h e o a r t y and h av e g iv e n them s p e f i c i a t i o n s of TR-2808-6 and have r ^ q j e s te d 1 e p a r ^ . "t o " a i n t a i n s t a n d a r d s a s much p o s s i b l e n e r t o s p e c i f i c a t i o n . We a t t a c h h e r e w i t h t r u e c o p i e s o f ? e d re p o rts r e c e d e d from la b o ra to rie s and in view of t h e f a c t 'd * the 1 * o rato rie s are very reputed concerns e n f r e s u l t s a re s a t i s i a c t a r y , we f e e l t h a t t h e o v e r a l l p e rfo rm a n c e of the ru b b e r r i n g s sh o u ld be s a t i s f a c t o r y . P erform ance I s h a ll however, g re a tly ap p reciate receiv in g your confirm s*i"n v ^ r r t h P ?r i ^ S t h e . r e s u l t s w ith yo u r S ta n d a rd s ard am com m ent di v is io n ^ m a y have t o make on th e p e r f o r - ~ )ber rin g s from Synthad Chemicals Pvt.Ltd". End: oH n o csu rv : rcO Ltd . laboratory report R e p o r t YOo 8 / 3 0 0 / 3 1 - 1 5 - 1 - 7 0 Tnqu i r y ^ e f s 'Ame s Subject P a r t y ' s l e t t e r N o . 6 9 -70/201 d a t e d 19th D e c e m b e r 1%9 V/b . Synthad C hem icals P . L t d . , v a i i a ^ ,rid y a n a y a r Evaluation oF physical properties for th ree rubber s amples . * " '1 The p a r t y d e s ir e d us t 0 t e s t t h e round ru b b e r s l a b s , r u b b e r r'inms and a compound. The compound was c u re d a t a t e m p . U1 C i n a s t a n d a r d AST?' t e s t s la b -m o ld . The r e s u l t s a re as f oLlnws : : S TC/248 Optimum tim e of cu re 141C . T .0 . i n k g / c n )'o e .B h a r d n e s s , s h o r e Ap 0 Tension s e t (250$) (duration - 15' Compound 141 C 10 ' 267 600 55 3.125 Round cured rubber slabs , _ 237 575 57 Rubber' , **(, --V f.yRp - -- - 3.125 Change a f t e r Ageing & 7 Q C f o r 7 d a y s : T.S $ Change -5.6 -22.5 -4.5 -15-5 + 6 + 5 '7o t e : In c ase o f r u b b e r ^insrs, o t h e r t e s t s co u ld no t be carried out. "CI'^LUSIOY: in c e no s p e c i f i c a t i o n valued a re s-iv er, lonclusion could b e drawn. , r ji TEST REPORT i d ^CR C U I P ' I T E C N I Y CALNCT BE .UBRITTEC AS i TBS T -SPORT FOR ^Un.LITY TC A TP I R S PARTY. True copy/ Shree Digvijay Cement Co., Lta. ASBESTOS PRODUCTS DIVISION. ranip, SABARMATI, AHMEDABAD-?, , (INDIA) . , Continuation Sheet No. Au r r e f e r e n c e G - 3 5 LABORATORY REPORT BAYER ( INDIA ) LIMITED Than a Date 17-1-70 To, 7/70 P a r t y : M e s s r s . SYNTH AT) CHEMICALS PVT .L TD. , V ALLABF VTDYARAGAR R e f e re n c e : T h e ir l e t t e r No.6 9 /7 0 -2 3 1 dated 2 5 -1 2 -1 969 subject: T esting of rubber p arts. We r e c e i v e d t w o s a n p l e s o f t e s t s l a b s m a r k e d and ' a f t e r a g e in g ' from t h e p a r t y . be 1 o re ag-eing Ihe resu lts Test slab of the t e s ts carried out are given Before ageing below**-& T e n s ile s tr e n g th kg/cm2 222 Elongation at break $ 598 300$ Modulus kg/cn2 86 Shore hardness 49 ?onclus ions Tie r e s u l t s a r e s e l f e x p l a n a t o r y . -.S : For compression se t re s u lts th e te s t conditions w ere n o t g i v e n by t h e p a r t y and hence t h e t r i a l not be c a rrie d o u t. Ageing 70 f o r 7 days. rediired could cc* t at January 22, 1970 Mr. K. V. Ramaseshan Shree DigvijBy Cement Co. Ltd* Ranip, Sabarmati Ahmedabad 5, India 254 Dear Mr. Ramaseahant We wish to acknowledge your inquiry of January 7, 1970 a "3-anvil roll* system for Hatschek sheet machines. W* do not have any direct experience with the 3-anvil roll system but we do believe it has certain advantages over a single anvil roll. The 3 roll system unquestionably produces a harder, more dense sheet and therefore the quality of fibre in the sheet may be reduced to a certain extent without sacrificing sheet strength. We have demonstrated in the laboratory that the strength of asbestos cement is proportional to the square of the density. Therefore when the density increases the strength of the sheet increases. Higher density sheets may also be produced by repressing the sheets immediately after production to remove excess water. A repress system is prohibitively expensive. The design and addition of * replacing an existing single anvil roll 0X1 *> difficult if not impossible to justify on savings. In we on a iction of corrugated asbestos cemsfit sheets, i is any advantage in producing t sheets with 3 a__n_v_i_l rcACSL The asbestos cement sheet must be as moist as possible whet5Tilt leaves the sheet machine for corrugating otherwise crown cracks develops--Moist sheets can readily be produced on a machine with a single ahvil roll. Best regards. Sincerely, jj-ie George Rudin r, '-`X-` " V * V ' Mr. V. N, Somani Shree Digvijay Cement Co* Ltd. Shreeniwa* Houaa Waudby Road Bombay - 1 INDIA January 19, 1970 Oaar &r . Somani: Thank you for your lattar of January 13 and 1 note that you ara interested in visiting soma of our factorial. I would lika vary much to hava Mr. R, Gomas, who is tha m ost * fam iliar with tha plant at Ahmadabad, ba availabla during your v isit and I hava askad him to hawdla this mattar for rr.a. Plaasa lat him know as aarly as possibla of your proposad itinarary bacauaa, as you know, Mr. Gomas travels quite a bit and ha w ill want to ba availabla for your v isit. U nless you hava sp ecial reasons for including so many factories, it would seam to ana that we can bring you com pletely up to data on all our asbestos-cam ant manufacturing p ro cesses by visitin g one or two factories. Therefore, plaasa let Mr. Gomes know as early as possibla whan you plan your v isit. In accordance with your request Xam sanding you a form al invitation R S O /lvr bcc: R. Gomes G. Read A. J. Stener^TM -*TM " -* R. S. Olson S'* t':. I Jhrse Digvijay Cement Company Limited Shree Niwae House Waudby Road Fort Bombay - 1 INDIA January 19, 1970 Gentlemen: We had the pleasure of a v isit of your Mr. V. N. Somani tow la st quarter of 1966. We had at that tim e indicated to him that he s to v isit us towards the end of 1968 or early 1969 by which tim e w e __ to com plete the several new m odifications and im provem ents wa, hand at our various plants. We had also Indicated to him that we a _ tim e be in a position to brief him with full technical data regarding various new item s of asbestos products which you could usefully manufacture in a phased program of diversification. For one reason or another Mr. Somani has not been able to v isit us so far and we feel that a v isit in the very near future is im perative if he is to take full benefit of the program we have already im plem ented and also of the program we are now planning for the next two years. In fact a v isit towards M arch/April 1970 would be the m ost ideal tim e to spend about 3 to 4 weeks with us and we can assure you that this stay would enable Mr. Somani to make substantial im provem ents in your factory and would a ssist not only in your achieving m ore profitable out-put but would also go a long way in ^ ^ to -d a te standard as compared to other in c h W t e ilt f ^ H n m U e n t ly keenly competing with you in the export market. in utilise U t. la to fin alise his program , please let us know w ell arrangem ents would be kept ready here so as to to the maximum benefit. Very truly yours, R. S. Oleon Vice President Manager of Engineering cot MX. * File _c Chiena Desk --' S ou si Deowber 23, 19(9 Mr. K.V. S m u M t h u Sliroc D icnrljay Cenant Co., Ltd. Baaip, S p t a a t l Aheedabad 5, India 2099. REFBRJCWCE, (29$ Qocr Mr. Pasiaseshan: Thank yoo foe yoer latter of D e c o d e r 15th. I mm *'-V yoa found ay latter of Mevaaber 29th belpfal. 2TsilLfid* ^ * 5 , 1 ! Ahaadabad definitely so u l l c t u d . in fact all feedaa a d t i y n f fibre cant IftKlli** " * ?1!>*.fibar* h*M * *iiited w i n y t ! T * tino1cJoSnn2eectSiSonr Swiit2htsiJi?l?leating therwe axe threoefiMweormtbaeart 29th. p r a c t i o e e v b i d i s h o u l d b e ntiaai sail i 1. T h e s i l l e a t i n g f a a b a a t e a f i b r e s m a t b e d e a a l a a h a m o r nill r Will. 2* a^nbre^bia**^11* ^ *** be a l l o w s to dry in p a c i n g systee s u t be periodically nwfcnjre days of holiday. On ny return I ill send e-Kaztrllle drawings covering the si H e a t i n g S^rJ St*^ L it say be t0 d*U!!?t to apl Of robber 2 V l / W,r " * press rolls. Pia* * . ^ - har??*a* 0 ** " * * M Mali as the square U i 1: ** y * retain this a a n p l e s o that c o o p e r e d t o y o u r o w n r o b b e r sella. Sind regards, Sincerely, decree Rodin TELEPHONE ( O F F I C E : 52921 I FACTORY : 6324 Ref. No. VR jTECF :82.9 5 -4 , j *' Cement -JfF F I C E SIKKA, ESTOS PRODUCTS Company VIA. J A M N A G A R . DIVISION) TELEGRAMS { JAMCEMENT BOMBAY j^ JAMCEMENT AHMEDABAD JAMCEMENT SIKKA limited, December RANIP, SABARMATI. A H M E D A B A D - 5. 15, 196Q Mr . ^ e o r ^ e R t H i n , JoV'-ng ij e T ^tern^ti onal E a s t , d o th ^ t r e at , We w Y ^ r V TT . . A Oor-n " near Rudin , T ott, t v,o n Y-p,;i f o r y o u r v e r y d e t a i l e d l e t t e r d e t e c t N o v e m b e r 1 % 9 w M a h w as a w a i t i n g me ^ r ^ m l e a v e e a r l t ^ - i s m o n t h . T on, o - m t e f u l t o y o u ^ o r p e n d i n g t h e ' v rlo u s d e t a i l s which o re of immense h e lp . ' ^ r e t h a n 60% o f f i b r e t h a t we a r e u s i n g on t h e o i w - - ^ c h i n e s i s S'dT-90 w h ic h i s a s i l i c a t e d f i b r e and I ^ h a l l ' >e g r a t e f u l ^ o r y o u r a d v i c e w h e t h e r w h i l e u s i n v t ^ ^ larm e q u a n tity of s i l i c a t e d f ib r e i t would be a d v i s e e ta t^in k of i r : ecting ^ - s i l i c a t e of soda so lu tio n u - t h e r , Of c o u r s e , t h e 40% o f f i b r e s v a r y f r o m t i m e t o tim e b u t c o n s i s t of m o stly R u s s i a n f i b r e and sm all quRrrtitieP of blue whenever i t is a v a ila b le . I need h ardlv a dd t h a t w h e n we u s e b l u e f i b r e o u r u r o b l e m of ( l r v i " f f w=s 1 - e r a* b l u e ^ i b r e N g r e a t e r f i l t r a t i o n b u t w b e n u - ^ n v ?`4 T - 3 0 - n l y w i t h R u s s i a n f i b r a S n a t u r a l l v f i l t r a t i o n o r o b l e m a s s u m e s i m p o r t a n c e . On r e c e i p t o f y o u r a d v i c e t h a t in s u i t e of u sin g a la r g e p e rc e n ta g e of S'lT-IO i t would " s t i l l be advisable t n ^nray s i l i c a t e of aoda, T sh a ll 0TML3.S L J a s s f e ,8 , e x u e r i m e n t s a n d r e n o r t t o y o u my f i n d i n g s . g r u b b e r r o l l e r s and t h e c o m p o s i t i o n , T ^ ve Hi ma r u ^ a c t u r e r s t o c a r e f u l l y l o d e i n t o t he ~ y o u h a y e g i v e n and n a v e q Tg0 a e k e d t ^ e m J ^ e " t i a 1 Ty o f t h e i r o ^ n o s i t i o n s ^ t ^ a t iTPwoBfa<B^wPible f o r you t o exam ine b e t t e r as t o what i a la oki ng m t h e i r oamcos i t i on t o g iv e a lo n g e r r ^ l i li-ne W "i t V -i nd n 0 rr p-r.A q