MS steel API 5L grade b pipe wall thickness

MS steel API 5L grade b pipe wall thickness

API 5L grade b pipe can be either API 5L grade b seamless steel pipe, or API 5L grade b welded pipe, which id futher classified into ERW pipe, SSAW pipe, LSAW pipe, etc. The chemical elements of API 5L grade b seamless pipe and API 5L grade b welded pipe are different. The content of the carbon and sulfur of the latter is lower than the former.

MS steel API 5L grade b pipe wall thickness

NPS Outside Diameter API 5l Pipe Schedule
(in) (in) SCH 10 SCH 20 SCH 30 SCH STD SCH 40 SCH 60 SCH XS SCH 80 SCH 100 SCH 120 SCH 140 SCH 160 SCH XXS
    Wall Thickness (in)
1/8 0.405       0.068 0.068   0.095 0.095          
1/4 0.540       0.088 0.088   0.119 0.119          
3/8 0.675       0.091 0.091   0.126 0.126          
1/2 0.840       0.109 0.109   0.147 0.147       0.187 0.294
3/4 1.050       0.113 0.113   0.154 0.154       0.219 0.308
1 1.315       0.133 0.133   0.179 0.179       0.250 0.358
1 1/4 1.660       0.140 0.140   0.191 0.191       0.250 0.382
1 1/2 1.900       0.145 0.145   0.200 0.200       0.281 0.400
2 2.375       0.154 0.154   0.218 0.218       0.344 0.436
2 1/2 2.875       0.203 0.203   0.276 0.276       0.375 0.552
3 3.500       0.216 0.216   0.300 0.300       0.438 0.600
3 1/2 4.000       0.226 0.226   0.318 0.318          
4 4.500       0.237 0.237   0.337 0.337   0.438   0.531 0.674
5 5.563       0.258 0.258   0.375 0.375   0.500   0.625 0.750
6 6.625       0.280 0.280   0.432 0.432   0.562   0.719 0.864
8 8.625   0.250 0.277 0.322 0.322 0.406 0.500 0.500 0.594 0.719 0.812 0.906 0.875
10 10.750   0.250 0.307 0.365 0.365 0.500 0.500 0.594 0.719 0.844 1.000 1.125 1.000
12 12.750   0.250 0.330 0.375 0.406 0.562 0.500 0.688 0.844 1.000 1.125 1.312 1.000
14 14.000 0.250 0.312 0.375 0.375 0.438 0.594 0.500 0.750 0.938 1.094 1.250 1.406  
16 16.000 0.250 0.312 0.375 0.375 0.500 0.656 0.500 0.844 1.031 1.219 1.438 1.594  
18 18.000 0.250 0.312 0.438 0.375 0.562 0.750 0.500 0.938 1.156 1.375 1.562 1.781  
20 20.000 0.250 0.375 0.500 0.375 0.594 0.812 0.500 1.031 1.281 1.500 1.750 1.969  
22 22.000 0.250 0.375 0.500 0.375   0.875 0.500 1.125 1.375 1.625 1.875 2.125  
24 24.000 0.250 0.375 0.562 0.375 0.688 0.969 0.500 1.219 1.531 1.812 2.062 2.344  
30 30.000 0.312 0.500 0.625 0.375     0.500            
32 32.000 0.312 0.500 0.625 0.375 0.688                
34 34.000 0.312 0.500 0.625 0.375 0.688                
36 36.000 0.312 0.500 0.625 0.375 0.750                
42 42.000   0.500 0.625 0.375 0.750                

Generally, API 5L grade b pipe wall thickness shall conform to the above table. But API 5L grade b pipe wall thickness exceeds the stipulation can also be met by customized. API 5L grade b pipe specifications adhere to the international organization for standardization ISO 3183.

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