Document 9YgBMXyY0jeaN9JXmVxjZ857

604 CHAPTER 27 1953 Guide meta! pipe made of a good grade of cast-iron with or without additions of nickel, chromium, or other alloy. This pipe is available in sizes from in. to 6 in., and in standard lengths of 5 or 6 ft, with external and internal diameters closely approximating those of extra strong wrought pipe. Castferrous pipe may be obtained coupled, beveled for welding, or with ends plain or grooved for the several types of couplings. It is easily cut and threaded as well aS welded. The fact that it is readily welded enables the manufacturers to supply the pipe in any lengths practicable for handling. Alloy Metal Pipe. Steel pipe bearing a small alloy of copper or other alloying element, and iron pipe bearing a small amount of copper and molyb- Table 1. Dimensions of Schedules 30 and 40 and Standard Weight Pipe* Internal Thre&ds per In. External Metal Internal Surface Duursb In. Weight pee Ft, Lb Sox 1 d 11xt. 3 i' g 5 J3o CIRCUM FERENCE, In. Tbansvebss Abba, Sq In. I1 & aa Length op Pipe, Ft pkb Sq Ft I 1 Length op Pipe, Ft Con taining 1 Co Ft Weioht op Water, Lb .pbbFt I Yi 0.406 0369 0.068 0344 0.245 27 M 0MC 0.364 0.088 0.424 . 0.425 18 y, 0.675 .0.493 0.091 0367 0368 18 k 0.840 0.622 0.109 0.850 0352 14 1372 0345 0.129 1.690 1.144 . 0.226 2.121 1.549 .0358 2.639 1.054 0354 0.057 0.104 0.191 0304 0.072 9.431 '14.199 2533.775 0.125 7.073 10.493 1383.789 0.167 5.658 7.748 734360 0350 4347 6.141 473.906 0325 0.045 0.083. 0:182 H .1 Ui m 1.050 1315 1.660 1.900 0324 0.113 1.049 0.133 1380 0.140 1.610 0.145 1.130 1.678 2.272 2.717 1.134 14' 1.684 1IM 2381 llM 2.731 HH 3.299 4.131 6315 5.969 2389 3396 4335 5.058 0366 1358 2.164 2335 0333 0364 1.495 .2.036 0333 0.494 0.669 0.799 3.637 2.904 2301 2310 4.635 3.641 2.768 2372 270.034 166.618 96375 70.733 0331 0375 0.65 038 2 2375 2.067 0.154 3.652 3.678 im 7.461 6.494 4.430 2H 2375 2.469 U.203 5.793 5319 8 9.033 7.757 6.492 3 3300 3.068 0.216 7375 7.616 8 10.996 9.638 9.621 8M 4.000 3348 0.226 9.109 9302 8 12366 11146 12366 3355 4.788 7393 9386 1.075 1.608 1.847 1.704 132S 1347 2328 1.091 1345 2.680 0.954 1.076 42.913 30.077 19.479 .14365 1.45 2.07 3.20 439 4 4-500 4.026 0.237 10.790 10389 8 14.137 12.648 15.904 12.730 3.174 0.848 0.948 11312 530 5 6363 . 5.047 0.258 14.617 14310 8 17.477 15356 24306 20.006 4300 0.686 0.756 7.198 8.67 6 6:625 6.065 0.280 18374 19.185 8 20313 19.054 34.472 28391 6381 0376 0.629 4.984 1231 8C 8.625 8.071 0.277 24.696 25.000 8 27096 25356 58.426 51.161 7.265 0.443 0.473 8. 8.625 7.981 0.322 28354 28.809 8 27.096 25.073 58.426 50.027 8399 0.443 0.478 2 815 22.18 2.878 21.70 10c 10.750 10.136 0307 34.240 35.000 8 33.772 31343 90.763 80.691 10.072 0.355 0376 10 10.750 10320 0.385 40.483 41.132 8 33.772 31.479 90.763 78355 11.908 0355 0381 1.785 34.95 1326 3430 12c 12.750 12.090 0330 43.773 45.000 8 40.055 37.982 127.676 114300 12 876 0.299 0315 12 12.750 12.000 0375 49362 50.706 8 40.055 37.699 127.676 113.097 14379 0399 0318 1.254 49.70 1373 49.00 # * Standard-weight wrought-iron pipe approximately the same wall thicknesses and weights as con tained herein for steel pipe. For exact dimensions, see American Standard far Wrought-iron and Wrought- Steel Pipe, ASA B36.10. b Thicknesses shown in bold face type are identical with thicknesses for Schedule 40 pipe of ASA B36.10. Same as Schedule 30, ASA B36.10. denum, have been claimed to possess more resistance to corrosion than plain steel pipe and they are advertised and sold under various trade names. Copper Pipe and Fittings. Owing to inherent resistance to corrosion, copper and brass pipe have always been used in heating, ventilating, and water supply installations, but the cost with standard dimensions for,., threaded connections has been high. The recent,introduction of fittings which permit erection by soldering or sweating, allows the use of pipe with thinner walls than would be possible with threaded connections, thereby, reducing the cost of installations. The initial cost of brass and copper pipe installations generally runs higher than the corresponding job with steel pipe and screwed connections in spite of the use of thin wall pipe, but the corrosive nature of the fluid Pipe,'Fittings, Welding 905 conveyed or the inaccessibility of some of the piping may warrant .use of a more expensive material than plain steel. The advantages of corrosionresisting pipe and fittings should be weighed against the correspondingly. higher initial 'cost. COMMERCIAL PIPE DIMENSIONS The two weights of steel and wrought-iron pipe commonly used are known as standard weight and extra strong, which correspond to Schedules 40 and 80, respectively, of the American Standard for Wrought-iron and WroughtSteel Pipe, ASA B36.10. The same external diameter is used for both Table 2. Standard Weights and Dimensions of Welded and Seamless Steel Pipe* Standard-Weight Pipe Extea-Strong Pipb Double Extra* Strong Pips* Size . Schedule 30 Outside No. op Duke* Threads teb. In. peb In. Wall Weight ! Thick- per Ft, ! ness. Lb In. T4C % 0.405 0340 H 0.675 H 0340 1u* 1.050 : 1315 w 1.660 l* 1.900 : 2375 2U 3 . 3300 3M 4.000 4 4300 3 6 6.625 8 8.625 10* 10.750 124 12.750 27 18 18 14 | ___ 14 1IH n -- !!$ -- 8 8 8 8 1__... 8 8 1 0.277 8 0307 8 0330 -- -- ____ 25.00 35.00 45.00 Schedule 40 Schedule 60 Wall Thick ness, In. Weight per Ft, Lb T&C Won Thick ness, In. Weight per Ft, Lb Plain Ends 0.068 0.088 0.091 0.109 0.113 0.133 0.140 0.145 0.154 0.203 0.216 0326 0337 0358 0.280 0322 0365 0375 035 0.43 037 035 | .----- __ -- 1.13 1.68 2.28 --------2.73 3.68 | ------ 532 7.62 930 - 1039 -- -- -- 1431 19.19 28.81 41.13 50.71 ... 0300 54.74 0300d 65.41 Schedule 80 Wan Thick ness, In. Weight Hun TT-thI* . 0395 . 0.119 0.126 0.147 0.154 0.179 0.191 0.200 0318 0.276 0.300 0318 0337 0375 0.432 _0.500 ___ -- 031 034 0.74 139 1.47 2.17 3.00 3.63 5.02 7.66 1035 1231 14.98 20.78 2837 4339 -- WaO Thick ness In. 0394 0308 0358 0382 0.400 0.436 0352 0.600 0.636 0.674 0.750 0364 0375 ___ Weight per Ft, Lb . Hun ... ---- "ui 2.44 3.66 531 6.41 9.03 13.70 1838 2235 27.54 3835 53.16 72.42 **"* From Standard Specifications for Welded and Seamless Steel Pipe of the American Society for Testing Materials, A.S.T.M. Designation A120. a Sizes larger than those shown in the table are measured by their outside diameter, such as 14 in. outside diameter, etc. These larger sizes will be furnished with plain ends, unless otherwise specified. The weights will correspond to thp manufacturers' published standards although it is possible to calculate the theoretical weights for any given size and wall thickness on the basis of 1 cu in. of steel weighing 0.2833 lb. b .The American'Standard for Wrought-iron and Wrought-Steel Pipe AiSA B36.10-1939 has assigned no schedule number to Doable Extra-Strong pipe. c A 10 in. Standard Weight pipe is also available with 0.279 in. wall thickness, but this wall is not covered by a Schedule Number. ^ Owing to a departure from the Standard-Weight and Extra-Strong wall thicknesses for the 12 in. nominal size, Schedules 40 and 60, Table 2 of the ASA B35.10-1939, Standard for Wrought-iron and Wrought-Steel Pipe, the regular Standard and Extra-Strong wall thicknesses (0.376 in. and 0.500 in.) have been substituted. weights of each nominal size for manufacturing reasons, as well as to afford interchangeability in threading and other elements associated with fabri cation and erection. Hence, the difference in wall thickness is accom panied by a corresponding change in inside diameter. In sizes up to 14 in., pipe is designated by its nominal size which corresponds roughly to the inside diameter of Schedule 40 pipe. In sizes 14 in. and upward, pipe is designated by its outside diameter (O.D.), and the wall thickness is speci fied. While the demands for pipe for the heating and ventilating industry are reasonably well served by Schedule 40 (standard weight) pipe, the erection