ASTM A53
Nominal Size Outside Diameter Wall Thickness Sch. No.
and
Wt. Class
 Nominal Wt. Test Pressure
inch inch cm inch cm kg/m kg/ft Grade A Grade B
psi kg/cm2 psi kg/cm2
6 6.625 168.3 0.188 4.78 - 19.27 5.87 1020 72 1190 84
0.219 5.56 - 22.31 6.8 1190 84 1390 98
0.25 6.35 - 25.36 7.73 1360 96 1580 111
0.28 7.11 40 (STD) 28.26 8.61 1520 107 1780 125
0.312 7.92 - 31.32 9.55 1700 120 1980 139
0.344 8.74 - 34.39 10.48 1870 131 2180 153
0.375 9.52 - 37.28 11.36 2040 143 2380 167
0.432 10.97 80 (X-S) 42.56 12.97 2350 165 2740 193
8 8.625 219.1 0.188 4.78 - 25.26 7.7 780 55 920 65
0.203 5.16 - 27.22 8.3 850 60 1000 70
0.219 5.56 - 29.28 8.92 910 64 1070 75
0.25 6.35 20 33.31 10.51 1040 73 1220 86
0.277 7.04 30 36.31 11.2 1160 82 1350 95
0.312 7.92 - 41.24 12.57 1300 91 1520 107
0.322 8.18 40 (STD) 42.55 12.97 1340 94 1570 110
0.344 8.74   45.34 13.82 1440 101 1680 118
0.375 9.52 - 49.2 14.99 1570 110 1830 129
0.406 10.31 60 53.08 16.18 1700 120 2000 141
0.438 11.13   57.08 17.39 1830 129 2130 150
0.5 12.7 80 (X-S) 64.64 19.71 2090 147 2430 171
10 10.75 273 0.188 4.78   31.62 9.64 630 44 730 51
0.203 5.16   34.08 10.39 680 48 800 56
0.219 5.56   36.67 11.18 730 51 860 60
0.25 6.35 20 41.75 12.72 840 59 980 69
0.279 7.09   46.49 14.17 930 65 1090 77
0.307 7.8 30 51.01 15.55 1030 72 1200 84
0.344 8.74   56.96 17.36 1150 81 1340 94
0.365 9.27 40 (STD) 60.29 18.38 1220 86 1430 101
0.438 11.13   71.87 21.9 1470 103 1710 120
0.5 12.7 60 (X-S) 81.52 24.85 1670 117 1950 137
0.594 15.09 80 95.97 29.9 1990 140 2320 163
12 12.75 323.8 0.203 5.16   40.55 12.36 570 40 670 47
0.219 5.56   43.63 13.3 620 44 720 51
0.25 6.35 20 49.71 15.15 710 50 820 58
0.281 7.14   55.75 16.99 790 56 930 65
0.312 7.92   61.69 18.8 880 62 1030 72
0.33 8.38 30 65.18 19.87 930 65 1090 77
0.344 8.74   67.9 20.69 970 68 1130 79
0.375 9.52 40 (STD) 73.78 22.49 1060 75 1240 87
0.406 10.31   79.7 24.29 1150 81 1340 94
0.438 11.13   85.82 26.15 1240 87 1440 101
0.5 12.7 (X-S) 97.43 29.7 1410 99 1650 116
0.562 14.27 60 108.92 33.2 1590 112 1850 130
0.688 17.48 80 132.04 40.24 1940 136 2270 160
14 14 355.6 0.21 5.33   46.04 14.03 540 38 630 44
0.219 5.56   47.99 14.63 560 39 660 46
0.25 6.35 10 54.69 16.67 640 45 750 53
0.281 7.14   61.35 18.7 720 51 840 59
0.312 7.92 20 67.9 20.69 800 56 940 66
0.344 8.74   74.76 22.79 880 62 1030 72
0.375 9.52 30 (STD) 81.25 24.76 960 67 1120 79
0.438 11.13 40 94.55 28.82 1130 79 1310 92
0.469 11.91   100.94 30.77 1210 85 1410 99
0.5 12.7 (X-S) 107.39 32.74 1290 91 1500 105
0.594 15.09 60 126.71 38.62 1530 108 1790 126
0.75 19.05 80 158.1 48.19 1930 136 2250 158
16 16 406.4 0.219 5.56   54.96 16.75 490 34 570 40
0.25 6.35 10 62.64 19.09 560 39 660 46
0.281 7.14   70.3 21.43 630 44 740 52
0.312 7.92 20 77.83 23.72 700 49 820 58
0.344 8.74   85.71 26.12 770 54 900 63
0.375 9.52 30 (STD) 93.17 28.39 840 59 980 69
0.436 11.13   108.49 33.07 990 70 1150 81
0.469 11.91   115.86 35.31 1080 75 1230 86
0.5 12.7 40 (X-S) 123.3 37.58 1120 79 1310 92
0.656 16.66 60 160.12 48.8 1480 104 1720 121
0.844 21.44 80 203.53 62.03 1900 134 2220 156