Material Material |
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Pipe Size Pipe Size |
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DN Flange Size DN Flange Size |
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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 |
System of Measurement System of Measurement |
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Specifications Met Specifications Met |
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Flange OD Flange OD | Show |
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Flange OD Flange OD | Hide |
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Flanged Connection Surface Flanged Connection Surface |
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![]() | Raised |
Fabrication Fabrication |
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Number of Bolt Holes Number of Bolt Holes |
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Maximum Steam Pressure Maximum Steam Pressure |
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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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Weight Weight |
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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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Connection Type Connection Type |
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![]() | Pipe |
For Use With For Use With |
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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 Stainless 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.
304 stainless steel flanges offer very good corrosion resistance, and 316 stainless steel flanges have excellent corrosion resistance.
Forged flanges have better strength than cast flanges.
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.


- For Use With: Air, Natural Gas, Oil, Steam, Water
- Specifications Met: DIN EN 1092-1
- Fittings: Use schedule 40 stainless steel
- Pipe Nipples and Pipe: Use Schedule 40 stainless steel
Bolt Hole | |||||||||||
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Pipe Size | DN Flange Size | Construction | Flange OD, mm | For Bolt Dia., mm | Dia., mm | No. of | Bolt Circle Dia., mm | Max. Pressure | Max. Steam Pressure | Each | |
304/304L Stainless Steel | |||||||||||
6 | 150 | Seamless | 285 | 20 | 22 | 8 | 240 | 230 psi @ 72° F | 125 psi @ 300° F | 0000000 | 0000000 |
316/316L Stainless Steel | |||||||||||
6 | 150 | Seamless | 285 | 20 | 22 | 8 | 240 | 230 psi @ 72° F | 145 psi @ 300° F | 0000000 | 00000000 |


- For Use With: Air, Natural Gas, Oil, Steam, Water
- Specifications Met: DIN EN 1092-1


- For Use With: Air, Natural Gas, Oil, Steam, Water
- Specifications Met: DIN EN 1092-1
- Fittings: Use schedule 40 stainless steel
- Pipe Nipples and Pipe: Use Schedule 40 stainless steel