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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Medium-Pressure Galvanized Iron and Steel Threaded Pipe Fittings
A galvanized finish gives these fittings fair corrosion resistance. They have the strength to handle medium-pressure applications.
Plugs with external hex drive and plugs with round body are also known as bull plugs; the center is hollow, which allows fluid to put pressure on the threads for a tight seal.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Specifications Met: ASME B31.1, ASME B31.3, ASTM A234, ASTM B633, MSS SP-95, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 steel
Pipe Size | Plug Construction | Material | Each | |
NPT Male | ||||
|---|---|---|---|---|
| 1/8 | Hollow | Galvanized Steel | 0000000 | 000000 |
| 1/4 | Hollow | Galvanized Steel | 0000000 | 00000 |
| 3/8 | Hollow | Galvanized Steel | 0000000 | 00000 |
| 1 1/4 | Hollow | Galvanized Steel | 0000000 | 00000 |
| 1 1/2 | Hollow | Galvanized Steel | 0000000 | 00000 |
| 2 | Hollow | Galvanized Steel | 0000000 | 000000 |
| 4 | Hollow | Galvanized Steel | 0000000 | 000000 |
Extreme-Pressure Steel Threaded Pipe Fittings
The strongest steel fittings we offer, these can withstand extreme-pressure applications.
Plugs with a round body or a hex body are solid and have a tall head. They’re also known as refinery plugs.
Note: The maximum pressure listed for Class 6000 fittings is for conditions where there are no sudden changes in pressure or velocity. Please refer to ASME B16.11 to determine the specific maximum operating pressure for your application.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
- Pressure Class: 6000
- Specifications Met: ASME B1.20.1, ASME B16.11, ASTM A105
- Pipe Nipples and Pipe: Use Schedule XXH steel
- Flanges: Use steel
| Pipe Size | Max. Pressure | Material | Each | |
NPT Male | ||||
|---|---|---|---|---|
| 1/4 | 6,000 psi @ 72° F | Steel | 0000000 | 000000 |
| 3/8 | 6,000 psi @ 72° F | Steel | 0000000 | 00000 |
| 1/2 | 6,000 psi @ 72° F | Steel | 0000000 | 00000 |
| 3/4 | 6,000 psi @ 72° F | Steel | 0000000 | 00000 |
| 1 | 6,000 psi @ 72° F | Steel | 0000000 | 00000 |
| 1 1/4 | 6,000 psi @ 72° F | Steel | 0000000 | 00000 |
| 1 1/2 | 6,000 psi @ 72° F | Steel | 0000000 | 00000 |
| 2 | 6,000 psi @ 72° F | Steel | 0000000 | 00000 |
- For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
- Pressure Class: 6000
- Specifications Met: ASME B1.20.1, ASME B16.11, ASTM A105
- Pipe Nipples and Pipe: Use Schedule XXH steel
- Flanges: Use steel
| Pipe Size | Drive Size | Max. Pressure | Material | Each | |
NPT Male | |||||
|---|---|---|---|---|---|
| 1/4 | 5/8" | 6,000 psi @ 72° F | Steel | 0000000 | 000000 |
| 3/8 | 7/8" | 6,000 psi @ 72° F | Steel | 0000000 | 00000 |
| 1/2 | 7/8" | 6,000 psi @ 72° F | Steel | 0000000 | 00000 |
| 3/4 | 1 1/16" | 6,000 psi @ 72° F | Steel | 0000000 | 00000 |
| 1 | 1 3/8" | 6,000 psi @ 72° F | Steel | 0000000 | 00000 |
| 1 1/4 | 1 3/4" | 6,000 psi @ 72° F | Steel | 0000000 | 00000 |
| 1 1/2 | 2" | 6,000 psi @ 72° F | Steel | 0000000 | 00000 |
| 2 | 2 1/2" | 6,000 psi @ 72° F | Steel | 0000000 | 000000 |