NPS Designator | Outside Diameter | Wall thickness | Nominal weight | Schedule No. | Test pressure | |||||
Grade A | Grade B | |||||||||
in | in | mm | in | mm | kg/m | psi | kpa | psi | kpa | |
1/2″ | 0.840 | 21.3 | 0.109 | 2.77 | 1.27 | 40 | 700 | 4800 | 700 | 4800 |
3/4″ | 1.050 | 26.7 | 0.113 | 2.87 | 1.69 | 40 | 700 | 4800 | 700 | 4800 |
1″ | 1.315 | 33.4 | 0.133 | 3.38 | 2.50 | 40 | 700 | 4800 | 700 | 4800 |
11/4″ | 1.660 | 42.2 | 0.140 | 3.56 | 3.39 | 40 | 1200 | 8300 | 1300 | 9000 |
11/2″ | 1.900 | 48.3 | 0.145 | 3.68 | 4.05 | 40 | 1200 | 8300 | 1300 | 9000 |
2″ | 2.375 | 60.3 | 0.154 | 3.91 | 5.44 | 40 | 2300 | 15900 | 2500 | 17200 |
2-1/2″ | 2.875 | 73.0 | 0.203 | 8.16 | 8.63 | 40 | 2500 | 17200 | 2500 | 17200 |
3″ | 3.500 | 88.9 | 0.216 | 5.49 | 11.29 | 40 | 2220 | 15300 | 2500 | 17200 |
3-1/2″ | 4.000 | 101.6 | 0.226 | 5.74 | 13.57 | 40 | 2030 | 14000 | 2370 | 16340 |
4″ | 4.500 | 114.3 | 0.237 | 6.02 | 16.07 | 40 | 1900 | 13100 | 2210 | 15240 |
5″ | 5.563 | 141.3 | 0.258 | 6.55 | 21.77 | 40 | 1670 | 11510 | 1950 | 13440 |
6″ | 6.625 | 168.3 | 0.280 | 7.11 | 28.26 | 40 | 1520 | 10480 | 1780 | 12270 |
8″ | 8.625 | 219.1 | 0.322 | 8.18 | 42.55 | 40 | 1340 | 9240 | 1570 | 10820 |
10″ | 10.750 | 273.0 | 0.365 | 9.27 | 60.29 | 40 | 1220 | 8410 | 1430 | 9860 |
12″ | 12.750 | 323.8 | 0.406 | 10.31 | 79.70 | 40 | 1160 | 7930 | 1340 | 9240 |
14″ | 14.000 | 355.6 | 0.438 | 11.13 | 94.55 | 40 | 1130 | 7790 | 1110 | 9030 |
16″ | 16.000 | 406.4 | 0.500 | 12.70 | 123.30 | 40 | 1120 | 7720 | 1310 | 9030 |
18″ | 18.000 | 457.0 | 0.526 | 14.27 | 155.87 | 40 | 1120 | 7720 | 1310 | 9030 |
20″ | 20.000 | 508.0 | 0.594 | 15.09 | 183.42 | 40 | 1170 | 8070 | 1250 | 8620 |
24″ | 24.000 | 610.0 | 0.688 | 17.48 | 255.24 | 40 | 1030 | 7100 | 1200 | 8270 |
ท่อเหล็กดำ KLM ASTM A53 (UL)
Standard specification for Pipe, Steel,
Black and Hot-Dipped, Zinc-Coated,Welded and Seamless
หมวดหมู่: ท่อเหล็กดำ