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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Standard-Wall Butt-Weld Stainless Steel Unthreaded Pipe Fittings
Also known as Schedule 40 fittings, these have thicker walls than our thin-wall stainless steel unthreaded butt-weld fittings. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow.
304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Water
- Specifications Met: ASME B16.9, ASTM A403, MSS SP-43
- Pipe Nipples and Pipe: Use Schedule 40 stainless steel
- Flanges: Use Class 150 stainless steel
304/304L Stainless Steel | 316/316L Stainless Steel | |||||
|---|---|---|---|---|---|---|
Pipe Size | Wall Thick. | Construction | Each | Each | ||
| 1/2 | 0.109" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 3/4 | 0.113" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 1 | 0.133" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 1 1/4 | 0.14" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 1 1/2 | 0.145" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 2 | 0.154" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 2 1/2 | 0.203" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 3 | 0.216" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 4 | 0.237" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 6 | 0.28" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 8 | 0.322" | Welded | 000000000 | 000000 | 000000000 | 000000 |
Thin-Wall Butt-Weld Stainless Steel Unthreaded Pipe Fittings
Also known as Schedule 10 fittings, these are thin and lightweight. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow.
304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Water
- Specifications Met: ASME B16.9, ASTM A403, MSS SP-43
- Pipe: Use Schedule 10 stainless steel
304/304L Stainless Steel | 316/316L Stainless Steel | |||||
|---|---|---|---|---|---|---|
| Pipe Size | Wall Thick. | Construction | Each | Each | ||
| 1/2 | 0.083" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 3/4 | 0.083" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 1 | 0.109" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 1 1/4 | 0.109" | Welded | 000000000 | 00000 | 000000000 | 000000 |
| 1 1/2 | 0.109" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 2 | 0.109" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 2 1/2 | 0.12" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 3 | 0.12" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 4 | 0.12" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 6 | 0.134" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 8 | 0.148" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 10 | 0.165" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 12 | 0.18" | Welded | 000000000 | 000000 | 000000000 | 000000 |
Thick-Wall Butt-Weld Stainless Steel Unthreaded Pipe Fittings
With a thicker wall than our standard-wall butt-weld pipe fittings, these offer high strength while providing a smooth connection for maximum flow. They have beveled ends that, when flush to pipe, create a trough for a leak-resistant, permanent weld.
304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Specifications Met: ASTM A403
- Pipe Nipples and Pipe: Use Schedule 80 stainless steel
- Fittings: Use Class 300 or 600 stainless steel