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Nominal Wall Thickness Pipe

Nominal wall thickness seamless and welded carbon and alloy steel pipes

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Nominal wall thickness for seamless and welded steel pipes according ANSI B36.10 are indicated in the table below:

Nominal Pipe Size
(in)		 Outside Diameter
(in)		 Schedule
10 20 30 STD 40 60 XS 80 100 120 140 160 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       0.188 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  
  • STD - Standard
  • XS - Extra Strong
  • XXS - Double Extra Strong

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Related Topics

  • Dimensions - Sizes and dimensions of pipes and tubes, and their fittings - inside and outside diameter, weight and more

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