Document 6B8DaRkZaML3VLOGq3n7Z0dQo

>pni ii>^Mfi p MW P| 'Mt ii w u M^ijpaPMsg w.'waw ..jfe 4 K .- Suttirffo.'WJ'- -.---A.* -----fc*-- ------3i^w'~ ^ LIA 2 179 7 LEAD INDUSTRIES ASSOCIATION 0 Groybof Building, 420 l.xJng'on Ave<we New Yoffc. N. Y. Kerch 1, 1933. TO Members of the Lead Industries Association: CAIXIKO LEAD srecincATiog One of our members hae suggested the advisa bility of the Lead Industrie* Association preparing specifications for the use of ester departments end vatsr companies In the purchase of pig lead for calking pur poses. Troffl tlae to tine s Levs also teen requested hr veter companies and their cast-iron pipe supplier* to furnieh recommendation* for a calking lead specifi cation, all of vhlch vould Indicate that a need for such a specification exists. 0 A surrey of the procedure of io m of the larger cities In purchasing calking lead reveals tbs fact that the requirements in various cities differ greatly and In vary eassa call for lead unsatisfactory for calking purposes. For instance, the Jtdcral Govern ment Specification for Grads B lead, vhlch la used for calking, requires only 93 per eent pure lead, and Chicago requlrea 99 per cent lead, obviously either 6 per cent or 1 per cent of Impurities such as antimony, vould sake tbs lead unsuitable for calking. Gome cities Include chemical Itad In their specifications and others do not. In other words. there la no uniformity in the specific ations of the larger cities some of the ep-elficatton* being entirely too rigid and other* too lax. V1th tbs requirements of a good calking lead In mind, ve have prepared the enclosed t*o suggested specifications vhlch might be used alternatively by vater departments and vater companies, but vhlch require virtu ally the same lead regardless or vhlch of the tvo speci fications la selected. Ye are submitting tvo suggested specifications to permit those water companies familiar with them to use A^.T.U. specifications vhereas other* may prefer * briefer recommendation. It 1* felt that either of these specifications, if adopted, will protect 4^ tbs interests of lead generally by eliminating unsatls- Uim w i. - V: -* i'iw.m 11 u, l I SSJWMJJ. IlftPjS IW-SJL" =HWM HM>il.i'lKJUBS.' ; ..& 21^' gaaa-ti -- $ 0" factory lead which sake* poor Jolntc and eauaea dissatis faction with lead. It would alao protect our seaber* fro* the competition of poor lead sold at low prices. Ve would like to hare your opinion as to (1) whether you think the Association should adopt s o bs sort of a specification for calking lead and (2) your erltlclss of the enclosed suggested specifications. If standard specifications are adopted by the Association we will atteapt to hawethea accepted by the Aaerlcaa Pater Torts Acsoclatlon, but whether adopted by that Association or not, wo will see that water departments and other users of calking lead throughout the country are thoroughly Informed about our recosvendatlons. Sincerely yours, Secretary, SUi)|Uiliew JUT ' .HII ||! ^ | i pJ,l 111)1IH.iiiiwp^WI H f 3 ii l- n-SHU JMjW.SI V"`J u w w u b w .iu j s w ih ; - i,t pi ' h is" M l*m - - - -- - - _ - - ^ w !'gg" J^JIMPM'WWWWfl LI A21799 8PBCinCATI0B3 FOR PIO IZAD POB CALglWO PPRP06B3 . Specification A Pi* lead for calkin* purposes shall seat tl specifications of the Aaerlean Society for Testln* Ma terial* for pi* lead (A.8.T.M. Designation B 29-23, Pace 694 of the 1930 Standard*, Part 1) exeept that the lead a*y he produced fron secondary or reworked raterial, presided that it ae^t the A.S.T.M. specification* in all other re poet*. The A.8.T.M. specification* establish the Halt of lapurltlea, the aethods of savplln* and analysis, rethod of aarkln* pi** for the identification of the pro ducer and the *r*da and aethod of settlln* elalns. Specification B Pi* lead for calkin* purposes shall contain not less than 99.7 per cent pure lead. Iapurltles shall not exceed the follosin* Haltst Arsenle, Ant loony and Tin tore the r Copper Bine Iron Bleauth 8ll*r 0.016 per cent C.09 0.002 0.006 0.26 0.016 The producer's naae or Brand shall be clearly east upon eaeh pi*. Lead shall he of anlfora softness and easily calked or driven. .jm-i iw " jncMswvfW if ; ;*' N 3432.01