Document mpOVYv2n9V0OpDLvB0peamdVQ

AMFRIfflN SOCIETYOF HEATING & VENTILATING ENGINEERSGUU)EP)23 : fact in practical pipe experience is that hot-water-heating systems in variably showed no corrosion to speak of after 35 or 40 years' use; where as, frequently, hot-water-supply systems operating at the same average temperature, with the same water lasted less than half this time. That this was independent of whether the material was iron or steel was fully demonstrated by many service tests which were conducted for a period of more than ten years, in which representative pipes of each class were installed alternately in hot-water lines. Size TABLE 38. STANDARD PIPE--BLACK AND GALVANIZED* AU Weights and Dimensions are Nominal Diameters Weight per Foot Couplings Test Pres sure in Pounds External Internal Thickness Plain ends Threads and couplings Threads per inch Diameter i Length W e ig h t B u tt Lap Qu H X 1 IK m 2 2K 3 3X s 6 7 8 8 9 10 10 10 11 12 12 14 O. D. 15 O. D. 16 O. D. 17 O. D. 18 O. D. 20 0. D. .405 .540 .675 .840 .269 .364 .493 .622 .068 .088 .091 .109 1.050 1.315 1.660 1.900 .824 .113 1.049 .133 1.380" .140 1.610 .145 2.375 2.875 3.500 4.000 2.067 2.469 3.068 3.548 .154 .203 .216 .226 4.500 5.000 5.563 6.625 4.026 4.506 5.047 6.065 .237 .247 .258 .280 7.625 8.625 8.625 9.625 7.023 8.071 7.981 8.941 .301 .277 .322 .342 10.750' 10.750 10.750 11.750 10.192 10.136 10.020 11.000 .279 .307 .365 .375 12.750 12.750 14.000 15.000 12.090 12.000 13.250 14.250 .330 .375 .375 .375 16.000 17.000 18.000 20.000 15.250 16.214 17.182 19.182 .375 .393 .409 .409 .244 .424 .567 .850 1.130 1.678 2.272 2.717 3.652 5.793 7.575 9.109 10.790 12.538 14.617 18.974 23.544 24.696 28.554 33.907 31.201 34.240 40.483 45.557 43.773 49.562 54.568 58.573 62.579 69.704 76.840 85.577 .245 .425 .568 .852 1.134 1.684 2.281 2.731 3.678 5.819 7.616 9.202 10.889 12.642 14.810 19.185 23.769 25.000 28.809 34.188 32.000 35.000 41.132 46.247 45.000 50.706 55.824 60.375 64.500 72.602 80.482 89.617 27 18 18 14 14 UH UK llH ll H 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 .562 .685 .848 1.024 1.281 1.576 1.950 2.218 2.760 3.276 3.948 4.591 5.091 5.591 6.296 7.358 8.358 9.358 9.358 10.358 11.721 11.721 11.721 12.721 13.958 13.958 15.208 16.446 17.446 18.683 19.921 21.921 H 1 IM IX 1H IH 2j| 2H 2H 3K 3X 3M 3M 4H 4M 4H 4M 4H i>H 6K BH BVi 6M 6 Hi BH BH BH 6Mi VM .029 .043 .070 .116 700 700 700 700 .209 700 .343 700 .535 700 1000 .743 700 1000 1.208 700 1000 1.720 800 1000 2.498 800 1000 4.241 -- 1000 4.741 5.241 8.091 9.554 1000 1000 1000 1000 10.932 13.905 13.905 17.236 29.877 29.877 29.877 32.550 .......... .............. .....-- 1000 800 1000 900 600 800 900 800 43.098. 43.098 ........... 47.152 59.493 600 800 700 700 63.294 90.941 108.672 120.187 600 600 600 500 The permissible variation in weight is 5 per cent above and 5 per cent below. Furnished with threads and couplings and in random lengths unless otherwise ordered. Taper of threads is K-in. diameter per foot length for all sizes. The weight per foot of pipe withthreads and couplings is based on a length of 20 ft., including the coupling, but shipping lengths of small sizes will usually average less than 20 ft. All weights given in pounds. AU dimensions given in inches. On sizes made in more than one weight, weight desired must be specified. From National Tube Co.'s ."Book of Standards." 116 YENTI1AIIN6 ENGINEERS6EIDEJ923 All reliable data on this subject indicate that the composition of the iron--i.e., the varying amount of carbon, phosphorous, manganese, sulphur, silicon, oxides, slag and copper usually found in wrought iron and soft steel--makes very little difference in the amount or character of corrsion under water, although under atmospheric exposure the influence of com position is sometimes quite marked. In practice, oxygen removal has been accomplished in two ways, namely; by de-aerating the water mechanically; and by fixing the free oxygen by chemical combination. Suitable apparatus is now being manufactured for this purpose. TABLE 59. EXTRA STRONG PIPE--BLACK AND GALVANIZED* All Weights and Dimensions are Nominal Size Diameters External Internal Weight per Foot Thickness Plain Ends Test Pressure in Pounds Butt Lap k k % XA % i IK IK 2 zK 3 3K 'i 4K 5 6 7 8 9 10 11 12 14 O. D. 15 O. D. 16 O. D. .405 .540 .675 .840 1.050 1.315 1.660 1.900 2.375 2.875 3.500 4.000 4.500 5.000 5.563 6.625 7.625 8.625 9.625 10.750 11.750 12.750 14.000 15.000 16.000 .215 .302 .423 .546 .742 .957 1.278 1.500 1.939 2.323 2.900 3.364 3.826 4.290 4.813 5.761 6.625 7.625 8.625 9.750 10.750 11.750 13.000 14.000 15.000 .095 .119 .126 .147 .154 .179 .191 .200 .218 .276 .300 .318 .337 .355 .375 .432 .500 .500 .500 .500 .500 .500 .500 .500 .500 .314 .535 .738 1.087 . . 1.473 2.171 2.996 3.631 5.022 7.661 10.252 12.505 14.983 17.611 20.778 28.573 38.048 43.388 48.728 54.735 60.075 65.415 72.091 77.431 82.771 700 700 700 700 700 700 1500 1500 1500 1500 1500 2500 2500 2500 2000 2000 2000 2000 1800 1800 1800 1500 .1500 1500 1200 1100 * 1100 1000 1000 1000 The permissible variation in weights is 5 per cent above and 5 per cent below. Furnished with plain ends and in random lengths unjess otherwise ordered. AU weights given in pounds. All dimensions given tn inches. In addition to the above test, on sizes J^-in. to 1-in. inclusive, the pipe is jarred with a hammer while under pressure. From National Tube Co.'s " Book of Standards." 117