Filter by
Fitting Connection
Connects To
Pipe Material
Pressure Class
Fitting Type
Pipe Schedule
Flanged Connection Surface
Maximum Steam Pressure @ Temperature
Flange OD
Specifications Met
For Use With
Bolt Circle Diameter
For Fitting Schedule
Shape
U.S.–Mexico–Canada Agreement (USMCA) Qualifying
Export Control Classification Number (ECCN)
DFARS Specialty Metals
How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
More
Low-Pressure Steel Unthreaded Pipe Flanges
Bolt two flat-surface flanges or two raised-surface flanges of the same size together with a gasket (sold separately) to create an access point in a pipe line. Flanges are for use with low-pressure applications in noncorrosive environments.
Slip-on weld flanges have no internal stop. Slide a pipe through the flange and weld on both sides.
Reducing flanges let you transition your piping system to a smaller pipe. Attach to a flange with a larger pipe size but with the same flange dimensions.
Inch Slip-On Weld Flanges
Front
Raised Surface on Back
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Pressure Class: See table
- Specifications Met: See table
- Certification: See table
- Pipe Nipples and Pipe: Use Schedule 40 steel
- Fittings: See Table
Bolt Hole | For Fitting | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size  | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Pressure Class | Max. Pressure | Max. Steam Pressure | Schedule | Material | Certification | Specifications Met | Each | |
| 1/2 | 3 1/2" | 1/2" | 5/8" | 4 | 2 3/8" | 150 | 285 psi @ 72° F | 150 psi @ 300° F | 40 | Iron, Steel | Material Certificate with Traceable Lot Number and Test Report | ASME B16.5, ASTM A105, MSS SP-25 | 68095K398 | 000000 |
| 3/4 | 3 7/8" | 1/2" | 5/8" | 4 | 2 3/4" | 150 | 285 psi @ 72° F | 150 psi @ 300° F | 40 | Iron, Steel | Material Certificate with Traceable Lot Number and Test Report | ASME B16.5, ASTM A105, MSS SP-25 | 68095K344 | 00000 |
| 1 | 4 1/4" | 1/2" | 5/8" | 4 | 3 1/8" | 150 | 285 psi @ 72° F | 150 psi @ 300° F | 40 | Iron, Steel | Material Certificate with Traceable Lot Number and Test Report | ASME B16.5, ASTM A105, MSS SP-25 | 68095K345 | 00000 |
| 1 | 4 59/64" | 5/8" | 0.748" | 4 | 3 35/64" | __ | Not Rated | Not Rated | 40 | Iron, Steel | __ | ASTM A105, JIS B 2220 | 1752N14 | 00000 |
| 1 1/4 | 4 5/8" | 1/2" | 5/8" | 4 | 3 1/2" | 150 | 285 psi @ 72° F | 150 psi @ 300° F | 40 | Iron, Steel | Material Certificate with Traceable Lot Number and Test Report | ASME B16.5, ASTM A105, MSS SP-25 | 68095K346 | 00000 |
| 1 1/2 | 5" | 1/2" | 5/8" | 4 | 3 7/8" | 150 | 285 psi @ 72° F | 150 psi @ 300° F | 40 | Iron, Steel | Material Certificate with Traceable Lot Number and Test Report | ASME B16.5, ASTM A105, MSS SP-25 | 68095K347 | 00000 |
| 1 1/2 | 5 33/64" | 5/8" | 0.748" | 4 | 4 9/64" | __ | Not Rated | Not Rated | 40 | Iron, Steel | __ | ASTM A105, JIS B 2220 | 1752N15 | 00000 |
| 2 | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 150 | 285 psi @ 72° F | 150 psi @ 300° F | 40 | Iron, Steel | Material Certificate with Traceable Lot Number and Test Report | ASME B16.5, ASTM A105, MSS SP-25 | 68095K348 | 00000 |
| 2 | 6 7/64" | 5/8" | 0.748" | 4 | 4 23/32" | __ | Not Rated | Not Rated | 40 | Iron, Steel | Material Certificate with Traceable Lot Number | ASTM A105, JIS B 2220 | 1752N16 | 00000 |
| 2 1/2 | 7" | 5/8" | 3/4" | 4 | 5 1/2" | 150 | 285 psi @ 72° F | 150 psi @ 300° F | 40 | Iron, Steel | Material Certificate with Traceable Lot Number and Test Report | ASME B16.5, ASTM A105, MSS SP-25 | 68095K349 | 00000 |
| 3 | 7 1/2" | 5/8" | 3/4" | 4 | 6" | 150 | 285 psi @ 72° F | 150 psi @ 300° F | 40 | Iron, Steel | Material Certificate with Traceable Lot Number and Test Report | ASME B16.5, ASTM A105, MSS SP-25 | 68095K351 | 00000 |
| 4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 150 | 285 psi @ 72° F | 150 psi @ 300° F | 40 | Iron, Steel | Material Certificate with Traceable Lot Number and Test Report | ASME B16.5, ASTM A105, MSS SP-25 | 68095K352 | 00000 |
| 5 | 10" | 3/4" | 7/8" | 8 | 8 1/2" | 150 | 285 psi @ 72° F | 150 psi @ 300° F | 40 | Iron, Steel | Material Certificate with Traceable Lot Number and Test Report | ASME B16.5, ASTM A105, MSS SP-25 | 68095K396 | 00000 |
| 6 | 11" | 3/4" | 7/8" | 8 | 9 1/2" | 150 | 285 psi @ 72° F | 150 psi @ 300° F | 40 | Iron, Steel | Material Certificate with Traceable Lot Number and Test Report | ASME B16.5, ASTM A105, MSS SP-25 | 68095K353 | 00000 |
| 8 | 13 1/2" | 3/4" | 7/8" | 8 | 11 3/4" | 150 | 285 psi @ 72° F | 150 psi @ 300° F | 40 | Iron, Steel | Material Certificate with Traceable Lot Number and Test Report | ASME B16.5, ASTM A105, MSS SP-25 | 68095K397 | 000000 |
| 10 | 16" | 7/8" | 1" | 12 | 14 1/4" | 150 | 285 psi @ 72° F | 150 psi @ 300° F | 40 | Iron, Steel | Material Certificate with Traceable Lot Number and Test Report | ASME B16.5, ASTM A105, MSS SP-25 | 68095K53 | 000000 |
| 12 | 19" | 7/8" | 1" | 12 | 17" | 150 | 285 psi @ 72° F | 150 psi @ 300° F | 40 | Iron, Steel | Material Certificate with Traceable Lot Number and Test Report | ASME B16.5, ASTM A105, MSS SP-25 | 68095K54 | 000000 |
Metric Slip-On Weld Flanges
Front
Raised Surface on Back
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Specifications Met: DIN 2633, DIN 86030, DIN EN 1092-1, DIN 2527
- Pipe Nipples and Pipe: Use Schedule 40 steel
- Fittings: Use Schedule 40 iron or steel
Bolt Hole | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | DN Flange Size | Flange OD, mm | For Bolt Dia., mm | Dia. | No. of | Bolt Circle Dia., mm | Max. Pressure | Max. Steam Pressure | Each | |
| 1 | 25 | 115 | 12 | 14 | 4 | 85 | 230 psi @ 72° F | 180 psi @ 300° F | 1132T19 | 000000 |
| 2 | 50 | 165 | 16 | 18 | 4 | 125 | 230 psi @ 72° F | 180 psi @ 300° F | 1132T21 | 00000 |
| 3 | 80 | 200 | 16 | 18 | 8 | 160 | 230 psi @ 72° F | 180 psi @ 300° F | 1132T22 | 00000 |
| 4 | 100 | 220 | 16 | 18 | 8 | 180 | 230 psi @ 72° F | 180 psi @ 300° F | 1132T23 | 00000 |
Inch Slip-On Weld Reducing Flanges
Front
Raised Surface on Back
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Pressure Class: 150
- Specifications Met: ASME B16.5, ASTM A105
- Certification: Material Certificate with Traceable Lot Number and Test Report
- Pipe Nipples and Pipe: Use Schedule 40 steel
- Fittings: Use Schedule 40 steel
Bolt Hole | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | For Flange Pipe Size | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Max. Steam Pressure | Each | |
| 3/4 | 1 | 4 1/4" | 1/2" | 5/8" | 4 | 3 1/8" | 285 psi @ 72° F | 230 psi @ 300° F | 68095K187 | 000000 |
| 1 | 1 1/2 | 5" | 1/2" | 5/8" | 4 | 3 7/8" | 285 psi @ 72° F | 230 psi @ 300° F | 68095K188 | 00000 |
| 1 | 2 | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 285 psi @ 72° F | 230 psi @ 300° F | 68095K189 | 00000 |
| 2 | 4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 285 psi @ 72° F | 230 psi @ 300° F | 68095K191 | 000000 |