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 Stainless Steel Unthreaded Pipe
- For Use With: Air, Water, Hydraulic Fluid, Natural Gas, Steam, Oil
- Specifications Met: ASTM A312
- Fittings: Use Class 3000 or Schedule 80 stainless steel
- Flanges: Use Class 300 or 600 stainless steel
Also known as Schedule 80, this pipe provides an extra-strong connection. Weld it to fittings and additional lengths of pipe. Welded connections are stronger than threaded connections and less likely to leak. Pipe is seamless with a smooth interior for unrestricted flow.
304 stainless steel pipe has very good corrosion resistance. 316 stainless steel pipe has excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
304/304L Stainless Steel | 316/316L Stainless Steel | |||||
|---|---|---|---|---|---|---|
| Lg., ft. | Wall Thick. | Construction | Each | Each | ||
1/4 Pipe Size—04 Dash Size | ||||||
| 1 | 0.119" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
| 3 | 0.119" | Seamless | 00000000 | 00000 | 00000000 | 00000 |
| 6 | 0.119" | Seamless | 00000000 | 00000 | 00000000 | 000000 |
3/8 Pipe Size—06 Dash Size | ||||||
| 1 | 0.126" | Seamless | 00000000 | 00000 | 00000000 | 00000 |
| 3 | 0.126" | Seamless | 00000000 | 00000 | 00000000 | 000000 |
| 6 | 0.126" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
1/2 Pipe Size—08 Dash Size | ||||||
| 1 | 0.147" | Seamless | 00000000 | 00000 | 00000000 | 00000 |
| 3 | 0.147" | Seamless | 00000000 | 00000 | 00000000 | 000000 |
| 6 | 0.147" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
3/4 Pipe Size—12 Dash Size | ||||||
| 1 | 0.154" | Seamless | 00000000 | 00000 | 00000000 | 00000 |
| 3 | 0.154" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
| 6 | 0.154" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
1 Pipe Size—16 Dash Size | ||||||
| 1 | 0.179" | Seamless | 00000000 | 00000 | 00000000 | 00000 |
| 3 | 0.179" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
| 6 | 0.179" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
1 1/2 Pipe Size—24 Dash Size | ||||||
| 1 | 0.2" | Seamless | 00000000 | 00000 | 00000000 | 000000 |
| 3 | 0.2" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
| 6 | 0.2" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
2 Pipe Size—32 Dash Size | ||||||
| 1 | 0.218" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
| 3 | 0.218" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
| 6 | 0.218" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
3 Pipe Size—48 Dash Size | ||||||
| 1 | 0.3" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
| 3 | 0.3" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
| 6 | 0.3" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
4 Pipe Size—64 Dash Size | ||||||
| 1 | 0.337" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
| 3 | 0.337" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
| 6 | 0.337" | Seamless | 00000000 | 000000 | 00000000 | 00000000 |
6 Pipe Size—96 Dash Size | ||||||
| 1 | 0.432" | Seamless | 00000000 | 000000 | 00000000 | 000000 |
| 3 | 0.432" | Seamless | 00000000 | 000000 | 00000000 | 00000000 |
| 6 | 0.432" | Seamless | 00000000 | 00000000 | 00000000 | 00000000 |