Filter by
System of Measurement
Fitting Connection
Material
Pressure Class
Flanged Connection Surface
Pipe Material
Pipe Schedule
Fitting Material
For Use With
Thread Type
Specifications Met
Connects To
For Fitting Schedule
Shape
Gender
DFARS Specialty Metals
Export Control Classification Number (ECCN)
RoHS
REACH
U.S.–Mexico–Canada Agreement (USMCA) Qualifying
About Pipe and Fittings
%20--%3e%3csvg%20version='1.1'%20id='Layer_1'%20xmlns='http://www.w3.org/2000/svg'%20xmlns:xlink='http://www.w3.org/1999/xlink'%20x='0px'%20y='0px'%20viewBox='0%200%20400%20400'%20style='enable-background:new%200%200%20400%20400;'%20xml:space='preserve'%3e%3cstyle%20type='text/css'%3e%20.st0{fill:%231A70A0;}%20.st1{opacity:0.5;}%20%3c/style%3e%3cg%3e%3cg%3e%3cpath%20class='st0'%20d='M200,56.9c38.35,0,74.4,14.93,101.51,42.05c27.11,27.11,42.05,63.17,42.05,101.51s-14.93,74.4-42.05,101.51%20S238.35,344.02,200,344.02s-74.4-14.93-101.51-42.05c-27.11-27.11-42.05-63.17-42.05-101.51s14.93-74.4,42.05-101.51%20S161.65,56.9,200,56.9%20M200,12.9C96.41,12.9,12.44,96.88,12.44,200.46c0,103.59,83.97,187.56,187.56,187.56%20c103.59,0,187.56-83.97,187.56-187.56C387.56,96.88,303.59,12.9,200,12.9L200,12.9z'/%3e%3c/g%3e%3cg%3e%3cg%20class='st1'%3e%3cpath%20class='st0'%20d='M235.49,152.24h16.15l-27.46,111.87c-1.94,7.8-2.91,12.5-2.91,14.1c0,1.82,0.58,3.29,1.73,4.41%20c1.16,1.12,2.69,1.68,4.61,1.68c5.23,0,11.78-3.85,19.63-11.55l17.22,21.34c-16.95,17.33-34.87,26-53.78,26%20c-8.37,0-15.45-1.47-21.23-4.41c-5.79-2.94-10.44-7.25-13.95-12.92c-3.51-5.67-5.27-11.18-5.27-16.53c0-1.93,0.35-5.24,1.05-9.94%20c1-6.94,2.05-12.54,3.15-16.82l15.22-62.15h-32.69l7.65-30.97C190.89,163.58,214.53,158.88,235.49,152.24z%20M230.44,80.84%20c8.24,0,14.66,2.62,19.26,7.86c4.6,5.24,6.9,11.55,6.9,18.94c0,5.46-1.42,10.7-4.25,15.73c-2.83,5.03-6.88,9.07-12.12,12.12%20c-5.24,3.05-10.33,4.57-15.24,4.57c-4.6,0-9.17-1.23-13.72-3.69c-4.55-2.46-8.02-5.78-10.43-9.95%20c-2.41-4.17-3.61-8.67-3.61-13.48c0-5.35,1.52-10.64,4.57-15.89c3.05-5.24,7.03-9.25,11.96-12.04%20C218.68,82.23,224.24,80.84,230.44,80.84z'/%3e%3c/g%3e%3cg%3e%3cpath%20class='st0'%20d='M214.08,152.24h16.15l-27.46,111.87c-1.94,7.8-2.91,12.5-2.91,14.1c0,1.82,0.58,3.29,1.73,4.41%20c1.16,1.12,2.69,1.68,4.61,1.68c5.23,0,11.78-3.85,19.63-11.55l17.22,21.34c-16.95,17.33-34.87,26-53.78,26%20c-8.37,0-15.45-1.47-21.23-4.41c-5.79-2.94-10.44-7.25-13.95-12.92c-3.51-5.67-5.27-11.18-5.27-16.53c0-1.93,0.35-5.24,1.05-9.94%20c1-6.94,2.05-12.54,3.15-16.82l15.22-62.15h-32.69l7.65-30.97C169.48,163.58,193.11,158.88,214.08,152.24z%20M209.03,80.84%20c8.24,0,14.66,2.62,19.26,7.86c4.6,5.24,6.9,11.55,6.9,18.94c0,5.46-1.42,10.7-4.25,15.73c-2.83,5.03-6.88,9.07-12.12,12.12%20c-5.24,3.05-10.33,4.57-15.24,4.57c-4.6,0-9.17-1.23-13.72-3.69c-4.55-2.46-8.02-5.78-10.43-9.95%20c-2.41-4.17-3.61-8.67-3.61-13.48c0-5.35,1.52-10.64,4.57-15.89c3.05-5.24,7.03-9.25,11.96-12.04%20C197.26,82.23,202.83,80.84,209.03,80.84z'/%3e%3c/g%3e%3c/g%3e%3c/g%3e%3c/svg%3e){kind=small}
Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.
Low-Pressure Steel Threaded Pipe Flanges for Low Temperatures
Front
Raised Surface on Back
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Pressure Class: 150
- Temperature Range: -40° to 800° F
- Specifications Met: ASME B16.5, ASTM A350, MSS SP-25
- Certification: Material Certificate with Traceable Lot Number and Test Report
- Fittings: Use Schedule 40 ASTM A420 carbon steel
- Pipe Nipples and Pipe: Use Schedule 40 ASTM A333 carbon steel
Use these Pressure Class 150 pipe flanges in low-pressure lines where temperatures drop down to -40° F. Even as temperatures drop, these flanges won't become brittle, so they absorb impact better than our other low-pressure steel flanges. All have been impact tested to verify their toughness. Bolt two flanges together with a gasket to create an access point within a line. With threaded connections, you can take them apart for maintenance and repairs.
Bolt Hole | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size  | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT | ||||||||||
| 1/2 | 3 1/2" | 1/2" | 5/8" | 4 | 2 3/8" | 285 psi @ 72° F | 230 psi @ 300° F | A350 LF2 Steel | 5281N11 | 000000 |
| 3/4 | 3 7/8" | 1/2" | 5/8" | 4 | 2 3/4" | 285 psi @ 72° F | 230 psi @ 300° F | A350 LF2 Steel | 5281N12 | 00000 |
| 1 | 4 1/4" | 1/2" | 5/8" | 4 | 3 1/8" | 285 psi @ 72° F | 230 psi @ 300° F | A350 LF2 Steel | 5281N13 | 00000 |
| 1 1/4 | 4 5/8" | 1/2" | 5/8" | 4 | 3 1/2" | 285 psi @ 72° F | 230 psi @ 300° F | A350 LF2 Steel | 5281N14 | 00000 |
| 1 1/2 | 5" | 1/2" | 5/8" | 4 | 3 7/8" | 285 psi @ 72° F | 230 psi @ 300° F | A350 LF2 Steel | 5281N15 | 00000 |
| 2 | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 285 psi @ 72° F | 230 psi @ 300° F | A350 LF2 Steel | 5281N16 | 00000 |
| 2 1/2 | 7" | 5/8" | 3/4" | 4 | 5 1/2" | 285 psi @ 72° F | 230 psi @ 300° F | A350 LF2 Steel | 5281N17 | 00000 |
| 3 | 7 1/2" | 5/8" | 3/4" | 4 | 6" | 285 psi @ 72° F | 230 psi @ 300° F | A350 LF2 Steel | 5281N18 | 00000 |
| 4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 285 psi @ 72° F | 230 psi @ 300° F | A350 LF2 Steel | 5281N19 | 00000 |
| 6 | 11" | 3/4" | 7/8" | 8 | 9 1/2" | 285 psi @ 72° F | 230 psi @ 300° F | A350 LF2 Steel | 5281N21 | 000000 |
Low-Pressure Steel Unthreaded Pipe Flanges for Low Temperatures
Even in temperatures as low as -46°, these A350 LF2 steel flanges won’t become brittle, so they absorb impact better than other low-pressure steel flanges. Also known as Pressure Class 150 flanges, they’re used in low-pressure lines. Bolt two flanges together with a gasket (not included) to create an access point within a line. All are impact tested to verify their strength.
Butt-weld flanges are also known as weld-neck flanges; the flange neck has a beveled end that, when flush with 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.
Socket-connect flanges have an internal stop that supports the pipe when welding and prevents the pipe from sliding all the way through.
Butt-Weld Flanges
Front
Raised Surface on Back
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Pressure Class: 150
- Specifications Met: ASME B16.5, ASTM A350
- Certification: Material Certificate with Traceable Lot Number and Test Report
- Pipe Nipples and Pipe: Use Schedule 40 ASTM A333 carbon steel
- Fittings: Use Schedule 40 ASTM A420 carbon steel
Bolt Hole | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Wall Thick. | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | Material | Each | |
| 2 | 0.157" | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N11 | 000000 |
| 3 | 0.216" | 7 1/2" | 5/8" | 3/4" | 4 | 6" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N12 | 00000 |
| 4 | 0.237" | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N13 | 00000 |
| 6 | 0.283" | 11" | 3/4" | 7/8" | 8 | 9 1/2" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N14 | 000000 |
Slip-On Weld Flanges
Front
Raised Surface on Back
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Pressure Class: 150
- Specifications Met: ASME B16.5, ASTM A350
- Certification: Material Certificate with Traceable Lot Number and Test Report
- Pipe Nipples and Pipe: Use Schedule 40 ASTM A333 carbon steel
- Fittings: Use Schedule 40 ASTM A420 carbon steel
Bolt Hole | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | Material | Each | |
| 1 | 4 1/4" | 1/2" | 5/8" | 4 | 3 1/8" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N15 | 000000 |
| 1 1/2 | 5" | 1/2" | 5/8" | 4 | 3 7/8" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N16 | 00000 |
| 2 | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N17 | 00000 |
| 2 1/2 | 7" | 5/8" | 3/4" | 4 | 5 1/2" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N18 | 00000 |
| 3 | 7 1/2" | 5/8" | 3/4" | 4 | 6" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N19 | 00000 |
| 4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N21 | 00000 |
| 6 | 11" | 3/4" | 7/8" | 8 | 9 1/2" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N22 | 000000 |
| 8 | 13 1/2" | 3/4" | 7/8" | 8 | 11 3/4" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N23 | 000000 |
Socket-Connect Flanges
Front
Raised Surface on Back
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Pressure Class: 150
- Specifications Met: ASME B16.5, ASTM A350
- Certification: Material Certificate with Traceable Lot Number and Test Report
- Pipe Nipples and Pipe: Use Schedule 40 ASTM A333 carbon steel
- Fittings: Use Schedule 40 ASTM A420 carbon steel
Bolt Hole | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | Material | Each | |
| 2 | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N24 | 000000 |
| 3 | 7 1/2" | 5/8" | 3/4" | 4 | 6" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N25 | 00000 |
| 4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N26 | 00000 |
Caps
Front
Raised Surface on Back
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Pressure Class: 150
- Specifications Met: ASME B16.5, ASTM A350
- Certification: Material Certificate with Traceable Lot Number and Test Report
- Pipe Nipples and Pipe: Use Schedule 40 ASTM A333 carbon steel
- Fittings: Use Schedule 40 ASTM A420 carbon steel
Bolt Hole | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | Material | Each | |
| 1 | 4 1/2" | 1/2" | 5/8" | 4 | 3 1/8" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N27 | 000000 |
| 1 1/2 | 5" | 1/2" | 5/8" | 4 | 3 7/8" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N28 | 00000 |
| 2 | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N29 | 00000 |
| 2 1/2 | 7" | 5/8" | 3/4" | 4 | 5 1/2" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N31 | 00000 |
| 3 | 7 1/2" | 5/8" | 3/4" | 4 | 6" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N32 | 00000 |
| 4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N33 | 00000 |
| 6 | 11" | 3/4" | 7/8" | 8 | 9 1/2" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N34 | 000000 |
| 8 | 13 1/2" | 3/4" | 7/8" | 8 | 11 3/4" | 285 psi @ 72° F | 230 psi @ 300° F | -46° to 800° | A350 LF2 Steel | 5235N35 | 000000 |