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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About Metal Tubing
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Smooth-Bore Seamless Stainless Steel Tubing
Seamless construction with no weld bead gives this tubing an interior with unrestricted flow. It is stronger than welded tubing and can be flared without splitting.
304 stainless steel has very good corrosion resistance.
316 stainless steel offers excellent corrosion resistance.
Tubing that meets ASTM specifications adheres to international standards for dimensions and materials.
For technical drawings and 3-D models, click on a part number.
- Temperature Range:
304 Stainless Steel: -425° to 1500° F
316 Stainless Steel: -325° to 1500° F - Bending Method: Tube Bender
- For Use With: Natural Gas, Water, Oil, Air
- Compatible Tubing Fittings: Butt Weld, Compression, Flared, and Yor-Lok
High-Pressure Plated Brass Threaded Pipe Nipples and Pipe
The plating on this pipe creates a shiny finish and provides extra protection in corrosive environments. It has the strength to handle high-pressure applications.
Nickel-plated brass pipe provides better corrosion resistance than unplated brass. Black zinc–plated brass pipe has a shiny finish that offers better corrosion resistance than nickel-plated brass and stands up to salt-spray applications.
Fully threaded pipe is also known as a close nipple; it is threaded on each end to the center.
NPTF (Dryseal) threads are compatible with NPT threads.
Universal threads have a Buna-N rubber gasket to protect against leaks.
For technical drawings and 3-D models, click on a part number.
High-Pressure Brass Threaded Pipe Nipples and Pipe with Sealant
Not only does this pipe have the strength to handle high-pressure applications, the threads have a sealant applied for extra protection against leaks. Pipe is brass for good corrosion resistance.
Fully threaded pipe is also known as a close nipple; it is threaded on each end to the center.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Water
Pipe Size | Lg. | Thread Type | Max. Pressure | Each | |
| 1/8 | 3/4" | NPT | 1,000 psi @ 72° F | 000000000 | 00000 |
Standard-Wall Brass Threaded Pipe Nipples and Pipe
Also known as Schedule 40, this pipe is for use in low-pressure flow applications. It is brass, which offers good corrosion resistance. Pipe is seamless and has a smooth interior for unrestricted flow.
To adhere to safety standards for drinking water systems, use pipe that meets NSF/ANSI 61.
For technical drawings and 3-D models, click on a part number.
- For Use With:
Lengths 6" and Shorter: Air, Natural Gas, Oil, Steam, Water
Lengths 12" and Longer: Air, Drinking Water, Natural Gas, Oil, Steam, Water - Specifications Met:
Lengths 6" and Shorter: ASME BS21, ASTM B687
Lengths 12" and Longer: ASME BS21, ASTM B687, NSF/ANSI 61 - Fittings: Use Class 125 brass or bronze
- Flanges: Use Class 150 brass or bronze
| Lg. | Construction | Each | |
1/8 Pipe Size | |||
|---|---|---|---|
| 12" | Seamless | 00000000 | 000000 |
- For Use With: See Table
- Specifications Met: See Table
- Fittings: Use Class 125 brass or bronze
- Flanges: Use Class 150 brass or bronze
| Lg. | Construction | For Use With | Specifications Met | Each | |
1/8 Pipe Size | |||||
|---|---|---|---|---|---|
| 12" | Seamless | Air, Drinking Water, Natural Gas, Oil, Steam, Water | ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61 | 00000000 | 000000 |
| 36" | Seamless | Air, Drinking Water, Natural Gas, Oil, Steam, Water | ASME B1.20.1, ASME BS21, ASTM B687, NSF/ANSI 61 | 00000000 | 00000 |
Standard-Wall Brass Unthreaded Pipe
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Specifications Met: ASTM B43
With two unthreaded ends, this pipe is designed for brazed connections, which are stronger than threaded connections and less likely to leak. It is also known as Schedule 40. Pipe is seamless, so it has a smooth interior for unrestricted flow. It is brass, which has good corrosion resistance.
For technical drawings and 3-D models, click on a part number.