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Connection Style Connection Style |
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| Flanged |
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| Slip-On Weld |
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| Butt Weld |
Material Material |
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System of Measurement System of Measurement |
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Specifications Met Specifications Met | Show |
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Specifications Met Specifications Met | Hide |
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Warning: Products have one, but not necessarily all, of the selected characteristics.
Number of Bolt Holes Number of Bolt Holes |
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Flanged Connection Surface Flanged Connection Surface |
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 | Raised |
For Pipe Schedule For Pipe Schedule |
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Maximum Steam Pressure Maximum Steam Pressure |
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For Use With For Use With |
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Connection Type Connection Type |
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 | Pipe |
For Pipe Material For Pipe Material |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Maximum Pressure Maximum Pressure |
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Gender Gender |
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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.
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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.
Butt-weld flanges are also known as weld-neck flanges. The flange neck has a beveled end that, when flush to pipe, creates a trough for a strong weld.
Slip-on weld flanges have no internal stop. Slide a pipe through the flange and weld on both sides.
Cap flanges are also known as blind flanges.
For technical drawings and 3-D models, click on a part number.
Inch Butt-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: Use Schedule 40 iron or steel
Bolt Hole | ||||||||||||
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| Pipe Size | Wall Thick. | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Construction | Max. Pressure | Max. Steam Pressure | Specifications Met | Each | |
| 1 | 0.144" | 4 59/64" | 5/8" | 0.748" | 4 | 3 35/64" | Seamless | Not Rated | Not Rated | ASTM A105, JIS 10K 25A, JIS B 2220 | 0000000 | 000000 |
| 1 1/2 | 0.137" | 5 33/64" | 5/8" | 3/4" | 4 | 4 9/64" | Seamless | Not Rated | Not Rated | ASTM A105, JIS 10K 40A, JIS B 2220 | 0000000 | 00000 |
| 2 | 0.157" | 6 7/64" | 5/8" | 3/4" | 4 | 4 23/32" | Seamless | Not Rated | Not Rated | ASTM A105, JIS 10K 50A, JIS B 2220 | 0000000 | 000000 |
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: Use Schedule 40 iron or steel
Bolt Hole | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Max. Steam Pressure | Specifications Met | Each | |
| 1 | 4 59/64" | 5/8" | 0.748" | 4 | 3 35/64" | Not Rated | Not Rated | ASTM A105, JIS 10K 25A, JIS B 2220 | 0000000 | 000000 |
| 1 1/2 | 5 33/64" | 5/8" | 0.748" | 4 | 4 9/64" | Not Rated | Not Rated | ASTM A105, JIS 10K 40A, JIS B 2220 | 0000000 | 00000 |
| 2 | 6 7/64" | 5/8" | 0.748" | 4 | 4 23/32" | Not Rated | Not Rated | ASTM A105, JIS 10K 50A, JIS B 2220 | 0000000 | 00000 |
Inch Caps
Front
Raised Surface on Back
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Pressure Class: See table
- Specifications Met: See table
- Certification: Material Certificate with Traceable Lot Number and Test Report
- Pipe Nipples and Pipe: Use Schedule 40 steel
- Fittings: Use Schedule 40 iron or steel
Bolt Hole | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Max. Steam Pressure | Specifications Met | Each | |
| 1 | 4 59/64" | 5/8" | 0.748" | 4 | 3 35/64" | Not Rated | Not Rated | ASTM A105, JIS 10K 25A, JIS B 2220 | 0000000 | 000000 |
| 1 1/2 | 5 33/64" | 5/8" | 0.748" | 4 | 4 9/64" | Not Rated | Not Rated | ASTM A105, JIS 10K 40A, JIS B 2220 | 0000000 | 00000 |
| 2 | 6 7/64" | 5/8" | 0.748" | 4 | 4 23/32" | Not Rated | Not Rated | ASTM A105, JIS 10K 50A, JIS B 2220 | 0000000 | 00000 |