ANSI B36.19 contain stainless steel seamless steel pipes and welded steel pipes,ANSI B36.10 contain seamless steel pipes and welded steel pipes.
The steel pipe data chart below can be used to find pipe sizes, diameters, wall thickness, working pressures and more. The chart is based on ASME/ANSI B 36.10 Welded and Seamless Wrought Steel Pipe and ASME/ANSI B36.19 Stainless Steel Pipe. Regardless of schedule number, pipes of a particular size all have the same outside diameter (not withstanding manufacturing tolerances). As the schedule number increases, the wall thickness increases, and the actual bore is reduced.
ANSI ASME B36.19 seamless steel pipes
For example:
A 4 inches (100 mm) Schedule 40 pipe has an outside diameter of 4.500 inches (114.30 mm), a wall thickness of 0.237 inches (6.02 mm), giving a bore of 4.026 inches (102.26 mm)
A 4 inches (100 mm) Schedule 80 pipe has an outside diameter of 4.500 inches ( 114.30 mm), a wall thickness of 0.337 inches (8.56 mm), giving a bore of 3.826 inches (97.18 mm)
| Pipe Size (inches) |
Outside Diameter (inches) mm |
Identification | Wall Thickness – t – (inches) |
Inside Diameter – d – (inches) |
||
|---|---|---|---|---|---|---|
| Steel | Stainless Steel Schedule No. | |||||
| Iron Pipe Size | Schedule No. | |||||
| 1/8 | 0.405 | . STD XS |
. 40 80 |
10S 40S 80S |
0.049 0.068 0.095 |
0.307 0.269 0.215 |
| 1/4 | 0.540 | . STD XS |
. 40 80 |
10S 40S 80S |
0.065 0.088 0.119 |
0.410 0.364 0.302 |
| 3/8 | 0.675 | . STD XS |
. 40 80 |
10S 40S 80S |
0.065 0.091 0.126 |
0.545 0.493 0.423 |
| 1/2 | 0.840 | . . STD XS . XXS |
. . 40 80 160 . |
5S 10S 40S 80S . . |
0.065 0.083 0.109 0.147 0.187 0.294 |
0.710 0.674 0.622 0.546 0.466 0.252 |
| 3/4 | 1.050 | . . STD XS . XXS |
. . 40 80 160 . |
5S 10S 40S 80S . . |
0.065 0.083 0.113 0.154 0.219 0.308 |
0.920 0.884 0.824 0.742 0.612 0.434 |
| 1 | 1.315 | . . STD XS . XXS |
. . 40 80 160 . |
5S 10S 40S 80S . . |
0.065 0.109 0.133 0.179 0.250 0.358 |
1.185 1.097 1.049 0.957 0.815 0.599 |
| 1 1/4 | 1.660 | . . STD XS . XXS |
. . 40 80 160 . |
5S 10S 40S 80S . . |
0.065 0.109 0.140 0.191 0.250 0.382 |
1.530 1.442 1.380 1.278 1.160 0.896 |
| 1 1/2 | 1.900 | . . STD XS . XXS |
. . 40 80 160 . |
5S 10S 40S 80S . . |
0.065 0.109 0.145 0.200 0.281 0.400 |
1.770 1.682 1.610 1.500 1.338 1.100 |
| 2 | 2.375 | . . STD XS . XXS |
. . 40 80 160 . |
5S 10S 40S 80S . . |
0.065 0.109 0.154 0.218 0.344 0.436 |
2.245 2.157 2.067 1.939 1.687 1.503 |
| 2 1/2 | 2.875 | . . STD XS . XXS |
. . 40 80 160 . |
5S 10S 40S 80S . . |
0.083 0.120 0.203 0.276 0.375 0.552 |
2.709 2.635 2.469 2.323 2.125 1.771 |
| 3 | 3.500 | . . STD XS . XXS |
. . 40 80 160 . |
5S 10S 40S 80S . . |
0.083 0.120 0.216 0.300 0.438 0.600 |
3.334 3.260 3.068 2.900 2.624 2.300 |
| 3 1/2 | 4.000 | . . STD XS |
. . 40 80 |
5S 10S 40S 80S |
0.083 0.120 0.226 0.318 |
3.834 3.760 3.548 3.364 |
| 4 | 4.500 | . . STD XS . . XXS |
. . 40 80 120 160 . |
5S 10S 40S 80S . . . |
0.083 0.120 0.237 0.337 0.438 0.531 0.674 |
4.334 4.260 4.026 3.826 3.624 3.438 3.152 |
| 5 | 5.563 | . . STD XS . . XXS |
. . 40 80 120 160 . |
5S 10S 40S 80S . . . |
0.109 0.134 0.258 0.375 0.500 0.625 0.750 |
5.345 5.295 5.047 4.813 4.563 4.313 4.063 |
| 6 | 6.625 | . . STD XS . . XXS |
. . 40 80 120 160 . |
5S 10S 40S 80S . . . |
0.109 0.134 0.280 0.432 0.562 0.718 0.864 |
6.407 6.357 6.065 5.761 5.501 5.189 4.897 |
| 8 | 8.625 | . . . . STD . XS . . . XXS . |
. . 20 30 40 60 80 100 120 140 . 160 |
5S 10S . . 40S . 80S . . . . . |
0.109 0.148 0.250 0.277 0.322 0.406 0.500 0.594 0.719 0.812 0.875 0.906 |
8.407 8.329 8.125 8.071 7.981 7.813 7.625 7.437 7.187 7.001 6.875 6.813 |
| 10 | 10.750 | . . . . STD XS . . . . . |
. . 20 30 40 60 80 100 120 140 160 |
5S 10S . . 40S 80S . . . . . |
0.134 0.165 0.250 0.307 0.365 0.500 0.594 0.719 0.844 1.000 1.125 |
10.482 10.420 10.250 10.136 10.020 9.750 9.562 9.312 9.062 8.750 8.500 |
| 12 | 12.75 | . . . . STD . XS . . . . . . |
. . 20 30 . 40 . 60 80 100 120 140 160 |
5S 10S . . 40S . 80S . . . . . . |
0.156 0.180 0.25 0.330 0.375 0.406 0.500 0.562 0.688 0.844 1.000 1.125 1.312 |
12.438 12.390 12.250 12.090 12.000 11.938 11.750 11.626 11.374 11.062 10.750 10.500 10.126 |
| 14 | 14.00 | . . . . STD . XS . . . . . .. |
. . 10 20 30 40 . 60 80 100 120 140 160 |
5S 10S . . . . . . . . . . . |
0.156 0.188 0.250 0.312 0.375 0.438 0.500 0.594 0.750 0.938 1.094 1.250 1.406 |
13.688 13.624 13.500 13.376 13.250 13.124 13.000 12.812 12.500 12.124 11.812 11.500 11.188 |
| 16 | 16.00 | . . . . STD XS . . . . . . |
. . 10 20 30 40 60 80 100 120 140 160 |
5S 10S . . . . . . . . . . |
0.165 0.188 0.250 0.312 0.375 0.500 0.656 0.844 1.031 1.219 1.438 1.594 |
15.670 15.624 15.500 15.376 15.250 15.000 14.688 14.312 13.938 13.562 13.124 12.812 |
| 18 | 18.00 | . . . . STD . XS . . . . . . . |
. . 10 20 . 30 . 40 60 80 100 120 140 160 |
5S 10S . . . . . . . . . . . . |
0.165 0.188 0.250 0.312 0.375 0.438 0.500 0.562 0.750 0.938 1.156 1.375 1.562 1.781 |
17.670 17.624 17.500 17.376 17.250 17.124 17.000 16.876 16.500 16.124 15.688 15.250 14.876 14.438 |
- 1 in (inch) = 25.4 mm
The pipe schedule number is the ratio of the design pressure of the pipe to the allowable stress of the material at the design temperature multiplied by 1000 and rounded.
That is: Sch = P / [σ] t × 1000
ANSI ASME B36.10 seamless steel pipes
ANSI B36.10 wall thickness grades: sch10, sch20, sch30, sch40, sch60, sch80, sch100, sch120, sch140 and sch160;
ANSI B36.19 wall thickness grade: sch5s, sch10s, sch40s, sch80s
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