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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 Steel Unthreaded Pipe Nipples and 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 80 steel
P22 Chrome-Moly Steel: Use Class 3000 F22 Chrome-Moly Steel - Flanges:
Steel: Use Class 300 or Class 600 Steel
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.
| Lg. | Dash Size | Wall Thick. | Construction | Material | Specifications Met | Each | |
1/8 Pipe Size  | |||||||
|---|---|---|---|---|---|---|---|
| 12" | 02 | 0.095" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 000000 |
| 36" | 02 | 0.095" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 00000 |
| 72" | 02 | 0.095" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 000000 |
1/4 Pipe Size | |||||||
| 12" | 04 | 0.119" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 00000 |
| 36" | 04 | 0.119" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 00000 |
| 72" | 04 | 0.119" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 000000 |
3/8 Pipe Size | |||||||
| 2" | 06 | 0.126" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 0000 |
| 4" | 06 | 0.126" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 6" | 06 | 0.126" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 8" | 06 | 0.126" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 12" | 06 | 0.126" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 00000 |
| 36" | 06 | 0.126" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 00000 |
| 72" | 06 | 0.126" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 000000 |
1/2 Pipe Size | |||||||
| 2" | 08 | 0.147" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 0000 |
| 4" | 08 | 0.147" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 6" | 08 | 0.147" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 8" | 08 | 0.147" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 12" | 08 | 0.147" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 00000 |
| 12" | __ | 0.147" | Seamless | P22 Chrome-Moly Steel | __ | 0000000 | 00000 |
| 36" | 08 | 0.147" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 000000 |
| 36" | __ | 0.147" | Seamless | P22 Chrome-Moly Steel | __ | 0000000 | 000000 |
| 72" | 08 | 0.147" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 000000 |
3/4 Pipe Size | |||||||
| 2" | 12 | 0.154" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 4" | 12 | 0.154" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 6" | 12 | 0.154" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 8" | 12 | 0.154" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 12" | 12 | 0.154" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 00000 |
| 12" | __ | 0.154" | Seamless | P22 Chrome-Moly Steel | __ | 0000000 | 00000 |
| 36" | 12 | 0.154" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 000000 |
| 36" | __ | 0.154" | Seamless | P22 Chrome-Moly Steel | __ | 0000000 | 000000 |
| 72" | 12 | 0.154" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 000000 |
1 Pipe Size | |||||||
| 2" | 16 | 0.179" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 4" | 16 | 0.179" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 6" | 16 | 0.179" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 8" | 16 | 0.179" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 12" | 16 | 0.179" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 00000 |
| 12" | __ | 0.179" | Seamless | P22 Chrome-Moly Steel | __ | 0000000 | 00000 |
| 36" | 16 | 0.179" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 000000 |
| 36" | __ | 0.179" | Seamless | P22 Chrome-Moly Steel | __ | 0000000 | 000000 |
| 72" | 16 | 0.179" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 000000 |
1 1/4 Pipe Size | |||||||
| 2" | 20 | 0.191" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 4" | 20 | 0.191" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 6" | 20 | 0.191" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 8" | 20 | 0.191" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 12" | 20 | 0.191" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 00000 |
| 36" | 20 | 0.191" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 000000 |
| 72" | 20 | 0.191" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 000000 |
1 1/2 Pipe Size | |||||||
| 2" | 24 | 0.2" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 4" | 24 | 0.2" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 6" | 24 | 0.2" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 8" | 24 | 0.2" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 12" | 24 | 0.2" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 00000 |
| 12" | __ | 0.2" | Seamless | P22 Chrome-Moly Steel | __ | 0000000 | 000000 |
| 36" | 24 | 0.2" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 000000 |
| 36" | __ | 0.2" | Seamless | P22 Chrome-Moly Steel | __ | 0000000 | 000000 |
| 72" | 24 | 0.2" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 000000 |
2 Pipe Size | |||||||
| 4" | 32 | 0.218" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 6" | 32 | 0.218" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 8" | 32 | 0.218" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 12" | 32 | 0.218" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 00000 |
| 12" | __ | 0.218" | Seamless | P22 Chrome-Moly Steel | __ | 0000000 | 000000 |
| 36" | 32 | 0.218" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 000000 |
| 36" | __ | 0.218" | Seamless | P22 Chrome-Moly Steel | __ | 0000000 | 000000 |
| 72" | 32 | 0.218" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 000000 |
2 1/2 Pipe Size | |||||||
| 4" | 40 | 0.276" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 6" | 40 | 0.276" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 8" | 40 | 0.276" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 12" | 40 | 0.276" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 000000 |
| 36" | 40 | 0.276" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 000000 |
| 72" | 40 | 0.276" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 000000 |
3 Pipe Size | |||||||
| 4" | 48 | 0.3" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 6" | 48 | 0.3" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 00000 |
| 8" | 48 | 0.3" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 000000 |
| 12" | 48 | 0.3" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 000000 |
| 36" | 48 | 0.3" | Seamless | Steel | ASTM A106, ASTM A733 | 00000000 | 000000 |
| 72" | 48 | 0.3" | Seamless | Steel | ASTM A106, ASTM A733 | 0000000 | 000000 |