Flange Wall Thickness

Nom pipe
Size
OD NOMINAL WALL THICKNESS
Sch10 Sch20 Sch30 Sth Wall Sch40 Sch60 EXT Hvy Sch80 Sch100 Sch120 Sch140 Sch160 XX Hvy
1/2 0.840 0.083 0.109 0.109 0.147 0.147 0.188 0.294
3/4 1.050 0.083 0.113 0.113 0.154 0.154 0.219 0.308
1 1.315 0.109 0.133 0.133 0.179 0.179 0.250 0.358
1 1/4 1.660 0.109 0.140 0.140 0.191 0.191 0.250 0.382
1 1/2 1.900 0.109 0.145 0.145 0.200 0.200 0.281 0.400
2 2.375 0.109 0.154 0.154 0.218 0.218 0.344 0.436
2 1/2 2.875 0.120 0.203 0.203 0.276 0.276 0.375 0.552
3 3.500 0.120 0.216 0.216 0.300 0.300 0.438 0.600
3 1/2 4.000 0.120 0.226 0.226 0.318 0.318 0.636
4 4.500 0.120 0.237 0.237 0.337 0.337 0.438 0.531 0.674
5 5.563 0.134 0.258 0.258 0.375 0.375 0.500 0.625 0.750
6 6.625 0.134 0.280 0.280 0.432 0.432 0.562 0.719 0.864
8 8.625 0.148 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 0.165 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 0.180 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
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
26 26.000 0.375 0.500
30 30.000 0.312 0.500 0.625 0.375 0.500
36 36.000 0.312 0.500 0.625 0.375 0.750 0.500
40 40.000 0.375 0.500
42 42.000 0.375 0.500
48 48.000 0.375 0.500

dimensions are in inches
(1) Light wall thicknesses are identical to stainless steel Schedule 10S in sizes through 12”, and to Schedule 10 sizes 14” and larger
(2) Standard wall thicknesses are identical to stainless steel Schedule 40S in sizes through 10”
(3) Extra heavy wall thicknesses are identical to stainless steel schedule 80S in sizes through 8”
(4) Other types, sizes, and thicknesses of flanges can be provided to meet application
(5) Stocked and manufactured in carbon steel, stainless steel, and variety of other metals and alloys
(6) Weld Neck Flange Bore Chart

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