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Hebei haihao high pressure flange & pipe fitting group was established in 1982, located in Mengcun County the hometown of pipe fittings in China.


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What’s the difference between ANSI B36.19 and ANSI B36.10?

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

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 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

Haihao Group manufacture pipe fittings, flanges and steel pipes products more than 30 years, we have ASTM,DIN,JIS,GOST standards. And the products sells well all over the world for the high quality.If you have any question,please contact us! Email:sales@haihaogroup.com

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