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
