Weld Neck Flanges
Weld neck flanges for high-pressure, high-temperature applications. Carbon, stainless, alloy, and duplex steel. Sizes from 1/2" to 60". Full hub design provides reinforced strength at the base.
Available Products
| Material | Grade | Sizes | Pressure Class | Standard |
|---|---|---|---|---|
| Carbon Steel | ASTM A105 | 1/2" - 24" | 150#, 300#, 600#, 900#, 1500#, 2500# | ASME B16.5 |
| Carbon Steel | ASTM A105 | 26" - 60" | 150#, 300#, 600#, 900# | ASME B16.47 |
| Stainless Steel | ASTM A182 F304/304L | 1/2" - 24" | 150#, 300#, 600#, 900#, 1500#, 2500# | ASME B16.5 |
| Stainless Steel | ASTM A182 F316/316L | 1/2" - 24" | 150#, 300#, 600#, 900#, 1500#, 2500# | ASME B16.5 |
| Alloy Steel | ASTM A182 F5/F9/F11/F22/F91 | 1/2" - 24" | 150#, 300#, 600#, 900#, 1500#, 2500# | ASME B16.5 |
| Duplex Steel | ASTM A182 F51/F53/F55 | 1/2" - 24" | 150#, 300#, 600#, 900#, 1500# | ASME B16.5 |
Pressure & Temperature Ratings
All flanges are rated per ASME B16.5 pressure-temperature tables. Pressure class ratings define the maximum allowable working pressure at specified temperatures per material group. For specific pressure-temperature data, contact our team or refer to the product catalog.
Other Flange Products
Slip-On Flanges
Slides over the pipe for easy alignment and welding. Cost-effective choice for low-pressure applications.
Blind Flanges
Closes off the end of a piping system. Used for testing, inspection, or future expansion.
Socket Weld Flanges
Pipe inserts into the socket before welding. Ideal for small-diameter, high-pressure lines.