How to Identify and Measure Fittings
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Standard-Wall Butt-Weld Aluminum Unthreaded Pipe Fittings
Also known as Schedule 40 fittings, these have thicker walls than our thin-wall aluminum unthreaded pipe fittings. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow. Fittings are lightweight with good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Oil, Water
- Specifications Met: ASME B16.9
- Pipe: Use Schedule 40 aluminum
- Flanges: Use Class 125 aluminum
- For Use With: Air, Oil, Water
- Specifications Met: ASME B16.9
- Pipe: Use Schedule 40 aluminum
- Flanges: Use Class 125 aluminum
Pipe Size | Wall Thick. | Construction | Each | |
| 1/2 | 0.109" | Seamless | 000000000 | 0000000 |
| 3/4 | 0.113" | Seamless | 000000000 | 000000 |
| 1 | 0.133" | Seamless | 000000000 | 000000 |
| 1 1/4 | 0.14" | Seamless | 000000000 | 000000 |
| 1 1/2 | 0.145" | Seamless | 000000000 | 000000 |
| 2 | 0.154" | Seamless | 000000000 | 000000 |
| 2 1/2 | 0.203" | Seamless | 000000000 | 000000 |
| 3 | 0.216" | Seamless | 000000000 | 000000 |
| 4 | 0.237" | Seamless | 000000000 | 000000 |
- For Use With: Air, Oil, Water
- Specifications Met: ASME B16.9
- Pipe: Use Schedule 40 aluminum
- Flanges: Use Class 125 aluminum
| Pipe Size | Wall Thick. | Construction | Each | |
| 1/2 | 0.109" | Seamless | 000000000 | 000000 |
| 3/4 | 0.113" | Seamless | 000000000 | 00000 |
| 1 | 0.133" | Seamless | 000000000 | 00000 |
| 1 1/4 | 0.14" | Seamless | 000000000 | 000000 |
| 1 1/2 | 0.145" | Seamless | 000000000 | 00000 |
| 2 | 0.154" | Seamless | 000000000 | 00000 |
| 2 1/2 | 0.203" | Seamless | 000000000 | 000000 |
| 3 | 0.216" | Seamless | 000000000 | 000000 |
| 4 | 0.237" | Seamless | 000000000 | 000000 |
- For Use With: Air, Oil, Water
- Specifications Met: ASME B16.9
- Pipe: Use Schedule 40 aluminum
- Flanges: Use Class 125 aluminum
- For Use With: Air, Oil, Water
- Specifications Met: ASME B16.9
- Pipe: Use Schedule 40 aluminum
- Flanges: Use Class 125 aluminum
Standard-Wall Aluminum Unthreaded Pipe Nipples and Pipe
- For Use With: Air, Oil, Water
- Specifications Met: ASTM B241
- Fittings: Use Schedule 40 aluminum
- Flanges: Use Class 125 aluminum
With a thicker wall than our thin-wall aluminum pipe, this pipe is also known as Schedule 40. Weld it to fittings and additional lengths of pipe. Welded connections are stronger than threaded connections and less likely to leak. This pipe meets ASTM B241, so it meets strict manufacturing requirements to ensure performance and quality. It’s seamless, which provides a smooth interior for unrestricted flow. Made of aluminum, it’s lightweight with good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
| Lg. | Wall Thick. | Construction | Each | |
1/8 Pipe Size | ||||
|---|---|---|---|---|
| 4" | 0.068" | Seamless | 00000000 | 00000 |
| 6" | 0.068" | Seamless | 00000000 | 0000 |
| 8" | 0.068" | Seamless | 00000000 | 0000 |
| 10" | 0.068" | Seamless | 00000000 | 0000 |
| 1ft. | 0.068" | Seamless | 00000000 | 00000 |
| 1 1/2ft. | 0.068" | Seamless | 00000000 | 00000 |
| 3ft. | 0.068" | Seamless | 0000000 | 00000 |
| 6ft. | 0.068" | Seamless | 0000000 | 00000 |
1/4 Pipe Size | ||||
| 1 1/2" | 0.088" | Seamless | 00000000 | 0000 |
| 2" | 0.088" | Seamless | 00000000 | 0000 |
| 4" | 0.088" | Seamless | 00000000 | 0000 |
| 6" | 0.088" | Seamless | 00000000 | 0000 |
| 1ft. | 0.088" | Seamless | 00000000 | 00000 |
| 3ft. | 0.088" | Seamless | 0000000 | 00000 |
| 6ft. | 0.088" | Seamless | 0000000 | 00000 |
3/8 Pipe Size | ||||
| 1 1/2" | 0.091" | Seamless | 00000000 | 0000 |
| 2" | 0.091" | Seamless | 00000000 | 0000 |
| 3" | 0.091" | Seamless | 00000000 | 0000 |
| 6" | 0.091" | Seamless | 00000000 | 00000 |
| 8" | 0.091" | Seamless | 00000000 | 00000 |
| 10" | 0.091" | Seamless | 00000000 | 00000 |
| 1ft. | 0.091" | Seamless | 00000000 | 00000 |
| 1 1/2ft. | 0.091" | Seamless | 00000000 | 00000 |
| 3ft. | 0.091" | Seamless | 0000000 | 00000 |
| 6ft. | 0.091" | Seamless | 0000000 | 000000 |
1/2 Pipe Size | ||||
| 2" | 0.109" | Seamless | 00000000 | 0000 |
| 3" | 0.109" | Seamless | 00000000 | 0000 |
| 4" | 0.109" | Seamless | 00000000 | 0000 |
| 5" | 0.109" | Seamless | 00000000 | 00000 |
| 6" | 0.109" | Seamless | 00000000 | 00000 |
| 8" | 0.109" | Seamless | 00000000 | 00000 |
| 10" | 0.109" | Seamless | 00000000 | 00000 |
| 1ft. | 0.109" | Seamless | 00000000 | 00000 |
| 1 1/2ft. | 0.109" | Seamless | 00000000 | 00000 |
| 3ft. | 0.109" | Seamless | 0000000 | 00000 |
| 6ft. | 0.109" | Seamless | 0000000 | 000000 |
3/4 Pipe Size | ||||
| 1 1/2" | 0.113" | Seamless | 00000000 | 0000 |
| 3" | 0.113" | Seamless | 00000000 | 0000 |
| 4" | 0.113" | Seamless | 00000000 | 00000 |
| 5" | 0.113" | Seamless | 00000000 | 00000 |
| 10" | 0.113" | Seamless | 00000000 | 00000 |
| 1ft. | 0.113" | Seamless | 00000000 | 00000 |
| 1 1/2ft. | 0.113" | Seamless | 00000000 | 00000 |
| 3ft. | 0.113" | Seamless | 0000000 | 00000 |
| 6ft. | 0.113" | Seamless | 0000000 | 000000 |
1 Pipe Size | ||||
| 2" | 0.133" | Seamless | 00000000 | 0000 |
| 4" | 0.133" | Seamless | 00000000 | 00000 |
| 5" | 0.133" | Seamless | 00000000 | 00000 |
| 6" | 0.133" | Seamless | 00000000 | 00000 |
| 8" | 0.133" | Seamless | 00000000 | 00000 |
| 10" | 0.133" | Seamless | 00000000 | 00000 |
| 1ft. | 0.133" | Seamless | 00000000 | 00000 |
| 1 1/2ft. | 0.133" | Seamless | 00000000 | 00000 |
| 3ft. | 0.133" | Seamless | 0000000 | 00000 |
| 6ft. | 0.133" | Seamless | 0000000 | 000000 |
1 1/4 Pipe Size | ||||
| 2" | 0.14" | Seamless | 00000000 | 0000 |
| 3" | 0.14" | Seamless | 00000000 | 0000 |
| 4" | 0.14" | Seamless | 00000000 | 00000 |
| 5" | 0.14" | Seamless | 00000000 | 00000 |
| 6" | 0.14" | Seamless | 00000000 | 00000 |
| 8" | 0.14" | Seamless | 00000000 | 00000 |
| 10" | 0.14" | Seamless | 00000000 | 00000 |
| 1ft. | 0.14" | Seamless | 00000000 | 00000 |
| 1 1/2ft. | 0.14" | Seamless | 00000000 | 00000 |
| 3ft. | 0.14" | Seamless | 0000000 | 000000 |
| 6ft. | 0.14" | Seamless | 0000000 | 000000 |
1 1/2 Pipe Size | ||||
| 2" | 0.145" | Seamless | 00000000 | 0000 |
| 3" | 0.145" | Seamless | 00000000 | 00000 |
| 4" | 0.145" | Seamless | 00000000 | 00000 |
| 6" | 0.145" | Seamless | 00000000 | 00000 |
| 8" | 0.145" | Seamless | 00000000 | 00000 |
| 10" | 0.145" | Seamless | 00000000 | 00000 |
| 1ft. | 0.145" | Seamless | 00000000 | 00000 |
| 1 1/2ft. | 0.145" | Seamless | 00000000 | 00000 |
| 3ft. | 0.145" | Seamless | 0000000 | 000000 |
| 6ft. | 0.145" | Seamless | 0000000 | 000000 |
2 Pipe Size | ||||
| 3" | 0.154" | Seamless | 00000000 | 00000 |
| 4" | 0.154" | Seamless | 00000000 | 00000 |
| 5" | 0.154" | Seamless | 00000000 | 00000 |
| 6" | 0.154" | Seamless | 00000000 | 00000 |
| 1ft. | 0.154" | Seamless | 00000000 | 00000 |
| 1 1/2ft. | 0.154" | Seamless | 00000000 | 00000 |
| 3ft. | 0.154" | Seamless | 0000000 | 000000 |
| 6ft. | 0.154" | Seamless | 0000000 | 000000 |
2 1/2 Pipe Size | ||||
| 4" | 0.203" | Seamless | 00000000 | 00000 |
| 6" | 0.203" | Seamless | 00000000 | 00000 |
| 8" | 0.203" | Seamless | 00000000 | 00000 |
| 1ft. | 0.203" | Seamless | 00000000 | 000000 |
| 3ft. | 0.203" | Seamless | 0000000 | 000000 |
| 6ft. | 0.203" | Seamless | 0000000 | 000000 |
3 Pipe Size | ||||
| 4" | 0.216" | Seamless | 00000000 | 00000 |
| 6" | 0.216" | Seamless | 00000000 | 00000 |
| 1ft. | 0.216" | Seamless | 00000000 | 000000 |
| 1 1/2ft. | 0.216" | Seamless | 00000000 | 000000 |
| 3ft. | 0.216" | Seamless | 0000000 | 000000 |
| 6ft. | 0.216" | Seamless | 0000000 | 000000 |
4 Pipe Size | ||||
| 4" | 0.237" | Seamless | 00000000 | 00000 |
| 5" | 0.237" | Seamless | 00000000 | 00000 |
| 6" | 0.237" | Seamless | 00000000 | 00000 |
| 8" | 0.237" | Seamless | 00000000 | 000000 |
| 10" | 0.237" | Seamless | 00000000 | 000000 |
| 1ft. | 0.237" | Seamless | 00000000 | 000000 |
| 1 1/2ft. | 0.237" | Seamless | 00000000 | 000000 |
| 3ft. | 0.237" | Seamless | 0000000 | 000000 |
| 6ft. | 0.237" | Seamless | 0000000 | 000000 |
6 Pipe Size | ||||
| 1ft. | 0.28" | Seamless | 00000000 | 000000 |
| 3ft. | 0.28" | Seamless | 00000000 | 000000 |
| 6ft. | 0.28" | Seamless | 00000000 | 000000 |
Aluminum Unthreaded Pipe Flanges
Also known as Pressure Class 125 flanges, these are for use in low-pressure applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line. Flanges are aluminum, which is lightweight with good corrosion resistance.
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.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Oil, Water
- Pressure Class: 125
- Specifications Met: ASME B16.1
- Fittings: Use Schedule 40 aluminum
- Pipe: Use Schedule 40 aluminum
Bolt Hole | ||||||||
|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Each | |
| 1/2 | 3 1/2" | 1/2" | 5/8" | 4 | 2 3/8" | 150 psi @ 72° F | 000000000 | 000000 |
| 3/4 | 3 7/8" | 1/2" | 5/8" | 4 | 2 3/4" | 150 psi @ 72° F | 000000000 | 00000 |
| 1 | 4 1/4" | 1/2" | 5/8" | 4 | 3 1/8" | 150 psi @ 72° F | 000000000 | 00000 |
| 1 1/2 | 5" | 1/2" | 5/8" | 4 | 3 7/8" | 150 psi @ 72° F | 000000000 | 000000 |
| 2 | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 150 psi @ 72° F | 000000000 | 000000 |
| 2 1/2 | 7" | 5/8" | 3/4" | 4 | 5 1/2" | 150 psi @ 72° F | 000000000 | 000000 |
| 3 | 7 1/2" | 5/8" | 3/4" | 4 | 6" | 150 psi @ 72° F | 000000000 | 000000 |
| 4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 150 psi @ 72° F | 000000000 | 000000 |
| 6 | 11" | 3/4" | 7/8" | 8 | 9 1/2" | 150 psi @ 72° F | 000000000 | 000000 |
Low-Pressure Aluminum Threaded Pipe Fittings
In addition to being lightweight, these aluminum fittings offer good corrosion resistance. Use them in low-pressure flow applications. To prevent cracking, do not tighten more than a 1/4-turn past hand tight.
Threaded female x butt weld straight adapters are also known as half couplings.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Oil, Water
- Specifications Met: See table
- Pressure Class: 150
- Pipe Nipples and Pipe: Use Schedule 40 aluminum
- Flanges: Use Class 125 aluminum
| Pipe Size | Max. Pressure | Specifications Met | Each | |
NPT Female × Butt Weld | ||||
|---|---|---|---|---|
| 1/8 | 150 psi @ 72° F | ASME B1.20.1, ASTM B221 | 000000000 | 00000 |
| 1/4 | 150 psi @ 72° F | ASME B1.20.1, ASTM B221 | 000000000 | 0000 |
| 3/8 | 150 psi @ 72° F | ASME B1.20.1, ASTM A865, ASTM B221 | 000000000 | 0000 |
| 1/2 | 150 psi @ 72° F | ASME B1.20.1, ASTM A865, ASTM B221 | 000000000 | 0000 |
| 3/4 | 150 psi @ 72° F | ASME B1.20.1, ASTM B221 | 000000000 | 0000 |
| 1 | 150 psi @ 72° F | ASME B1.20.1, ASTM B221 | 000000000 | 0000 |
| 1 1/4 | 150 psi @ 72° F | ASME B1.20.1, ASTM A865, ASTM B221 | 000000000 | 0000 |
| 1 1/2 | 150 psi @ 72° F | ASME B1.20.1, ASTM A865, ASTM B221 | 000000000 | 0000 |
| 2 | 150 psi @ 72° F | ASME B1.20.1, ASTM A865, ASTM B221 | 000000000 | 00000 |
| 2 1/2 | 150 psi @ 72° F | ASME B1.20.1, ASTM B221 | 000000000 | 00000 |
| 3 | 150 psi @ 72° F | ASME B1.20.1, ASTM B221 | 000000000 | 00000 |
| 4 | 150 psi @ 72° F | ASME B1.20.1, ASTM A865, ASTM B221 | 000000000 | 00000 |
| 6 | 150 psi @ 72° F | ASME B1.20.1, ASTM A865, ASTM B221 | 000000000 | 000000 |