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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Welded Steel Tubing
- Temperature Range: -65° to 800° F
- Bending Method: Tube Bender
A strong, high-pressure alternative to seamless tubing, this tubing is also known as DOM (drawn over mandrel). It is welded with a smoothed weld bead on the inside to reduce particle buildup. Tubing connects by welding. Do not use in corrosive environments.
| OD | Wall Thick. | ID | Max. Pressure | Temper Rating | 3 ft. | 6 ft. | |
For Use With Hydraulic Fluid and Natural Gas | |||||||
|---|---|---|---|---|---|---|---|
| 1/4" | 0.035" | 0.18" | 3,700 psi @ 72° F | Soft | 000000000 | ||
| 1/4" | 0.049" | 0.152" | 5,200 psi @ 72° F | Soft | 000000000 | ||
| 3/8" | 0.035" | 0.305" | 2,400 psi @ 72° F | Soft | 000000000 | ||
| 3/8" | 0.049" | 0.277" | 3,400 psi @ 72° F | Soft | 000000000 | ||
| 1/2" | 0.035" | 0.43" | 1,800 psi @ 72° F | Soft | 000000000 | ||
| 1/2" | 0.049" | 0.402" | 2,600 psi @ 72° F | Soft | 000000000 | ||
| 5/8" | 0.035" | 0.555" | 1,500 psi @ 72° F | Soft | 000000000 | ||
| 5/8" | 0.049" | 0.527" | 2,100 psi @ 72° F | Soft | 000000000 | ||
| 3/4" | 0.035" | 0.68" | 1,200 psi @ 72° F | Soft | 000000000 | ||
| 1" | 0.035" | 0.93" | 940 psi @ 72° F | Soft | 000000000 | ||
| 1 1/4" | 0.065" | 1.12" | 1,300 psi @ 72° F | Soft | 000000000 | ||
| 1 1/2" | 0.065" | 1.37" | 1,100 psi @ 72° F | Soft | 000000000 | ||
| 2" | 0.065" | 1.87" | 870 psi @ 72° F | Soft | 000000000 | ||
Vacuum-Rated Large-Diameter Steel Tubing
- Max. Temperature: Not Rated
- Bending Method: Tube Bender
- Compatible Fittings: Vacuum
This tubing has the strength to withstand vacuum applications up to 29" Hg. It is welded and has a weld bead on the inside.
Tubing with a galvanized finish offers better corrosion resistance than unfinished steel.
Steel | Galvanized Steel | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | ID | Max. Pressure | 5 ft. | 10 ft. | 5 ft. | 10 ft. | ||
For Use With Air and Plastic Pellets | |||||||||
| 2 1/8" | 0.065" | 1.995" | 150 psi @ 72° F | 0000000 | 00000000 | ||||
| 2 1/2" | 0.065" | 2.37" | 150 psi @ 72° F | 0000000 | 00000000 | ||||
| 3" | 0.065" | 2.87" | 150 psi @ 72° F | 0000000 | 00000000 | ||||
| 3 1/2" | 0.065" | 3.37" | 150 psi @ 72° F | 0000000 | 00000000 | ||||
| 4" | 0.065" | 3.87" | 150 psi @ 72° F | 0000000 | 00000000 | ||||
| 5" | 0.083" | 4.834" | 150 psi @ 72° F | 0000000 | 00000000 | ||||
| 6" | 0.083" | 5.834" | 150 psi @ 72° F | 0000000 | 00000000 | ||||
Easy-Fit Barbed Hose Fittings for Air and Water
Low-profile barbs and a longer first barb allow for a smoother, easier installation than other barbed fittings. Slide the barbed end into rubber hose and secure with a clamp.
Zinc-plated steel fittings have slightly better corrosion resistance than unplated steel fittings. Hose connectors are also known as hose menders and splicers. Use them to connect lengths of hose or to repair damaged hose.
- Maximum Pressure: See table
- Maximum Vacuum: See table
- Temperature Range: -20° to 200° F
- Attachment Type:
For 1/2" to 4" Hose IDs: Use Worm-Drive Clamps, Bolt Clamps, or Band-and-Buckle Clamps
For 6" to 8" Hose IDs: Use Band-and-Buckle Clamps - Specifications Met: See table
Low-Carbon Steel Round Tubes
Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into parts that don’t require high strength, such as frames, supports, and conduit. This steel is manufactured to ASTM, SAE, or EN standards for quality and performance.
Low-Carbon Steel Rectangular Tubes
Also known as mild steel, low-carbon steel is easy to machine, form, and weld. These tubes are often fabricated into parts that don’t require high strength, such as frames, supports, and raceways. To increase their wear resistance, you can surface harden them with heat treating. These tubes are manufactured to ASTM or EN standards for quality and performance.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
- Yield Strength: See table
- Hardness: Not Rated
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Not Rated
- Fabrication: Welded
- Specifications Met: See table
Weld-Together Framing and Fittings
Create strong structures by welding this framing together. Add metal panels to close off openings. Slide the rail into the fitting and weld in place.
