Connection Style Connection Style |
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![]() | Butt Weld |
![]() | Socket Connect |
ID ID |
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Wall Thickness Wall Thickness |
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For Use With For Use With |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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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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For Pipe Size For Pipe Size |
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Maximum Pressure Maximum Pressure |
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Maximum Steam Pressure Maximum Steam Pressure |
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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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Thick-Wall Butt-Weld Steel Unthreaded Pipe Fittings
With thick walls, these fittings are the strongest steel butt-weld fittings we offer. Weld them flush against pipe to provide a smooth connection for maximum flow. Fittings have beveled ends that create a trough for a leak-resistant, permanent weld. Use in noncorrosive environments.
180° bend connectors are also known as U-bends.
Tee outlets allow you to create a tap anywhere along a pipe. They are also known as branch connectors and are comparable to Weldolet. To install, drill a hole in your pipe to match the fitting’s pipe size and weld in place.
For technical drawings and 3-D models, click on a part number.

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Specifications Met: ASTM A234
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 steel
Pipe Size | Wall Thick. | |||||
---|---|---|---|---|---|---|
(A) | (B) | (A) | (B) | Construction | Each | |
1 1/2 | 1 | 0.2" | 0.179" | Seamless | 00000000 | 000000 |
2 | 3/4 | 0.218" | 0.154" | Seamless | 00000000 | 00000 |
2 | 1 | 0.218" | 0.179" | Seamless | 00000000 | 00000 |
2 | 1 1/4 | 0.218" | 0.191" | Seamless | 00000000 | 00000 |
2 | 1 1/2 | 0.218" | 0.2" | Seamless | 00000000 | 00000 |
2 1/2 | 2 | 0.276" | 0.218" | Seamless | 00000000 | 00000 |
3 | 1 1/4 | 0.3" | 0.191" | Seamless | 00000000 | 00000 |
3 | 1 1/2 | 0.3" | 0.2" | Seamless | 00000000 | 00000 |
3 | 2 | 0.3" | 0.218" | Seamless | 00000000 | 00000 |
3 | 2 1/2 | 0.3" | 0.276" | Seamless | 00000000 | 00000 |
4 | 2 | 0.337" | 0.218" | Seamless | 00000000 | 00000 |
4 | 2 1/2 | 0.337" | 0.276" | Seamless | 00000000 | 00000 |
4 | 3 | 0.337" | 0.3" | Seamless | 00000000 | 00000 |
6 | 3 | 0.432" | 0.3" | Seamless | 00000000 | 000000 |
6 | 4 | 0.432" | 0.337" | Seamless | 00000000 | 000000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Specifications Met: ASTM A234
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 steel

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Specifications Met: ASTM A234
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 steel
Pipe Size | Wall Thick. | Lg. | Construction | Each | |
1/2 | 0.147" | 1 1/2" | Seamless | 0000000 | 000000 |
3/4 | 0.154" | 1 1/2" | Seamless | 0000000 | 00000 |
1 | 0.179" | 1 1/2" | Seamless | 0000000 | 00000 |
1 1/4 | 0.191" | 1 7/8" | Seamless | 0000000 | 00000 |
1 1/2 | 0.2" | 2 1/4" | Seamless | 0000000 | 00000 |
2 | 0.218" | 3" | Seamless | 0000000 | 00000 |
2 1/2 | 0.276" | 3 3/4" | Seamless | 0000000 | 00000 |
3 | 0.3" | 4 1/2" | Seamless | 0000000 | 00000 |
4 | 0.337" | 6" | Seamless | 0000000 | 00000 |
6 | 0.432" | 9" | Seamless | 0000000 | 000000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Specifications Met: ASTM A234
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 steel
Pipe Size | Wall Thick. | Construction | Each | |
1/2 | 0.147" | Welded | 0000000 | 000000 |
3/4 | 0.154" | Seamless | 0000000 | 00000 |
1 | 0.179" | Seamless | 0000000 | 00000 |
1 1/4 | 0.191" | Seamless | 0000000 | 00000 |
1 1/2 | 0.2" | Seamless | 0000000 | 00000 |
2 | 0.218" | Seamless | 0000000 | 00000 |
2 1/2 | 0.276" | Seamless | 0000000 | 00000 |
3 | 0.3" | Seamless | 0000000 | 00000 |
4 | 0.337" | Seamless | 0000000 | 00000 |
6 | 0.432" | Seamless | 0000000 | 000000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Specifications Met: ASTM A234
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 steel

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Specifications Met: ASTM A234
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 steel


- For Use With: Air, Natural Gas, Oil, Steam, Water
- Specifications Met: ASTM A105, MSS SP-97
- Pipe Nipples and Pipe: Use Schedule 80 steel
Pipe Size (Wall Thick.) | For Pipe Size (Wall Thick.) | Ht. | Construction | Max. Pressure | Max. Steam Pressure | Each | |
1/4 (0.088") | 1/4 to 3/8 (0.256") | 5/8" | Seamless | 3,000 psi @ 72° F | 3,000 psi @ 210° F | 0000000 | 000000 |
1/4 (0.088") | 1/2 to 36 (0.256") | 5/8" | Seamless | 3,000 psi @ 72° F | 3,000 psi @ 210° F | 0000000 | 00000 |
3/8 (0.091") | 3/8 to 1/2 (0.285") | 3/4" | Seamless | 3,000 psi @ 72° F | 3,000 psi @ 210° F | 0000000 | 00000 |
3/8 (0.091") | 3/4 to 36 (0.285") | 3/4" | Seamless | 3,000 psi @ 72° F | 3,000 psi @ 210° F | 0000000 | 00000 |
1/2 (0.109") | 1/2 (0.314") | 3/4" | Seamless | 3,000 psi @ 72° F | 3,000 psi @ 210° F | 0000000 | 00000 |
1/2 (0.109") | 3/4 to 36 (0.314") | 3/4" | Seamless | 3,000 psi @ 72° F | 3,000 psi @ 210° F | 0000000 | 00000 |
3/4 (0.113") | 3/4 to 1 1/4 (0.338") | 7/8" | Seamless | 3,000 psi @ 72° F | 3,000 psi @ 210° F | 0000000 | 00000 |
3/4 (0.113") | 1 1/2 to 36 (0.338") | 7/8" | Seamless | 3,000 psi @ 72° F | 3,000 psi @ 210° F | 0000000 | 00000 |
1 (0.133") | 1 (0.382") | 1 1/16" | Seamless | 3,000 psi @ 72° F | 3,000 psi @ 210° F | 0000000 | 00000 |
1 (0.133") | 1 1/4 to 2 1/2 (0.382") | 1 1/16" | Seamless | 3,000 psi @ 72° F | 3,000 psi @ 210° F | 0000000 | 00000 |
1 (0.133") | 3 to 36 (0.382") | 1 1/16" | Seamless | 3,000 psi @ 72° F | 3,000 psi @ 210° F | 0000000 | 00000 |
1 1/4 (0.14") | 1 1/4 to 1 1/2 (0.435") | 1 1/4" | Seamless | 3,000 psi @ 72° F | 3,000 psi @ 210° F | 0000000 | 00000 |
1 1/4 (0.14") | 2 to 3 1/2 (0.435") | 1 1/4" | Seamless | 3,000 psi @ 72° F | 3,000 psi @ 210° F | 0000000 | 00000 |
1 1/4 (0.14") | 4 to 36 (0.435") | 1 1/4" | Seamless | 3,000 psi @ 72° F | 3,000 psi @ 210° F | 0000000 | 00000 |
1 1/2 (0.145") | 1 1/2 (0.445") | 1 5/16" | Seamless | 2,800 psi @ 72° F | 2,800 psi @ 210° F | 0000000 | 00000 |
1 1/2 (0.145") | 2 to 2 1/2 (0.445") | 1 5/16" | Seamless | 2,800 psi @ 72° F | 2,800 psi @ 210° F | 0000000 | 00000 |
1 1/2 (0.145") | 3 to 5 (0.445") | 1 5/16" | Seamless | 2,800 psi @ 72° F | 2,800 psi @ 210° F | 0000000 | 00000 |
1 1/2 (0.145") | 6 to 36 (0.445") | 1 5/16" | Seamless | 2,800 psi @ 72° F | 2,800 psi @ 210° F | 0000000 | 00000 |
2 (0.154") | 2 (0.467") | 1 1/2" | Seamless | 2,300 psi @ 72° F | 2,300 psi @ 210° F | 0000000 | 000000 |
2 (0.154") | 2 1/2 to 3 1/2 (0.467") | 1 1/2" | Seamless | 2,300 psi @ 72° F | 2,300 psi @ 210° F | 0000000 | 00000 |
2 (0.154") | 4 to 6 (0.467") | 1 1/2" | Seamless | 2,300 psi @ 72° F | 2,300 psi @ 210° F | 0000000 | 00000 |
2 (0.154") | 8 to 36 (0.467") | 1 1/2" | Seamless | 2,300 psi @ 72° F | 2,300 psi @ 210° F | 0000000 | 00000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Specifications Met: ASTM A234
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 steel
Pipe Size | Wall Thick. | Construction | Each | |
1/2 | 0.147" | Seamless | 0000000 | 000000 |
3/4 | 0.154" | Seamless | 0000000 | 00000 |
1 | 0.179" | Seamless | 0000000 | 00000 |
1 1/4 | 0.191" | Seamless | 0000000 | 00000 |
1 1/2 | 0.2" | Seamless | 0000000 | 00000 |
2 | 0.218" | Seamless | 0000000 | 00000 |
2 1/2 | 0.276" | Seamless | 0000000 | 00000 |
3 | 0.3" | Seamless | 0000000 | 00000 |
4 | 0.337" | Seamless | 0000000 | 00000 |
6 | 0.432" | Seamless | 0000000 | 000000 |
Thick-Wall Steel Unthreaded Pipe

- For Use With:
Steel: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
P22 Chrome-Moly Steel: Air, Natural Gas, Oil, Steam, Water - Specifications Met: See table
- Fittings:
Steel: Use Class 3000 or Schedule 30 steel
P22 Chrome-Moly Steel: Use Class 3000 F22 Chrome-Moly Steel - Flanges: See table
Thick, Schedule 80 walls give this pipe better strength than our standard-wall steel unthreaded pipe. Weld it to fittings and additional lengths of pipe. Welded connections are stronger than threaded connections and less likely to leak. Pipe is seamless, so it has a smooth interior for unrestricted flow. It is for use in noncorrosive environments.
P22 chrome-moly steel is stronger and easier to weld than plain steel. It resists scaling even in steam applications.
For technical drawings and 3-D models, click on a part number.
For Flange | |||||||||
---|---|---|---|---|---|---|---|---|---|
Lg., ft. | Dash Size | Wall Thick. | Construction | Material | Class | Material | Specifications Met | Each | |
1/8 Pipe Size | |||||||||
1 | 02 | 0.095" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 000000 |
3 | 02 | 0.095" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 000000 |
6 | 02 | 0.095" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 0000000 | 000000 |
1/4 Pipe Size | |||||||||
1 | 04 | 0.119" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 00000 |
3 | 04 | 0.119" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 000000 |
6 | 04 | 0.119" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 0000000 | 000000 |
3/8 Pipe Size | |||||||||
1 | 06 | 0.126" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 00000 |
3 | 06 | 0.126" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 000000 |
6 | 06 | 0.126" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 0000000 | 000000 |
1/2 Pipe Size | |||||||||
1 | 08 | 0.147" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 00000 |
1 | __ | 0.147" | Seamless | P22 Chrome-Moly Steel | __ | __ | __ | 0000000 | 00000 |
3 | 08 | 0.147" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 000000 |
3 | __ | 0.147" | Seamless | P22 Chrome-Moly Steel | __ | __ | __ | 0000000 | 000000 |
6 | 08 | 0.147" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 0000000 | 000000 |
3/4 Pipe Size | |||||||||
1 | 12 | 0.154" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 00000 |
1 | __ | 0.154" | Seamless | P22 Chrome-Moly Steel | __ | __ | __ | 0000000 | 00000 |
3 | 12 | 0.154" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 000000 |
3 | __ | 0.154" | Seamless | P22 Chrome-Moly Steel | __ | __ | __ | 0000000 | 000000 |
6 | 12 | 0.154" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 0000000 | 000000 |
1 Pipe Size | |||||||||
1 | 16 | 0.179" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 00000 |
1 | __ | 0.179" | Seamless | P22 Chrome-Moly Steel | __ | __ | __ | 0000000 | 00000 |
3 | 16 | 0.179" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 000000 |
3 | __ | 0.179" | Seamless | P22 Chrome-Moly Steel | __ | __ | __ | 0000000 | 000000 |
6 | 16 | 0.179" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 0000000 | 000000 |
1 1/4 Pipe Size | |||||||||
1 | 20 | 0.191" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 00000 |
3 | 20 | 0.191" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 000000 |
6 | 20 | 0.191" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 0000000 | 000000 |
1 1/2 Pipe Size | |||||||||
1 | 24 | 0.2" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 00000 |
1 | __ | 0.2" | Seamless | P22 Chrome-Moly Steel | __ | __ | __ | 0000000 | 000000 |
3 | 24 | 0.2" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 000000 |
3 | __ | 0.2" | Seamless | P22 Chrome-Moly Steel | __ | __ | __ | 0000000 | 000000 |
6 | 24 | 0.2" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 0000000 | 000000 |
2 Pipe Size | |||||||||
1 | 32 | 0.218" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 00000 |
1 | __ | 0.218" | Seamless | P22 Chrome-Moly Steel | __ | __ | __ | 0000000 | 000000 |
3 | 32 | 0.218" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 000000 |
3 | __ | 0.218" | Seamless | P22 Chrome-Moly Steel | __ | __ | __ | 0000000 | 000000 |
6 | 32 | 0.218" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 0000000 | 000000 |
2 1/2 Pipe Size | |||||||||
1 | 40 | 0.276" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 000000 |
3 | 40 | 0.276" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 000000 |
6 | 40 | 0.276" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 0000000 | 000000 |
3 Pipe Size | |||||||||
1 | 48 | 0.3" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 000000 |
3 | 48 | 0.3" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 000000 |
6 | 48 | 0.3" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 0000000 | 000000 |
4 Pipe Size | |||||||||
1 | 64 | 0.337" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 000000 |
3 | 64 | 0.337" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 00000000 | 000000 |
6 | 64 | 0.337" | Seamless | Steel | 300, 600 | Steel | ASTM A106, ASTM A53, ASTM A733 | 0000000 | 00000000 |