Connection Style Connection Style |
---|
![]() |
Flanged |
![]() |
Slip-On Weld |
![]() |
Butt Weld |
Material Material |
---|
|
System of Measurement System of Measurement |
---|
|
Specifications Met Specifications Met | Show |
---|
Specifications Met Specifications Met | Hide |
---|
Number of Bolt Holes Number of Bolt Holes |
---|
|
Flanged Connection Surface Flanged Connection Surface |
---|
![]() | Raised |
For Pipe Schedule For Pipe Schedule |
---|
![]() | |
Maximum Steam Pressure Maximum Steam Pressure |
---|
|
For Use With For Use With |
---|
|
|
Connection Type Connection Type |
---|
![]() | Pipe |
For Pipe Material For Pipe Material |
---|
|
REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
---|
|
RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
---|
|
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
---|
Maximum Pressure Maximum Pressure |
---|
|
Gender Gender |
---|
|
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.
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
- 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 | 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 |


- 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 |


- 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 |