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For Tube Material For Tube Material |
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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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Butt-Weld Fittings for Stainless Steel Tubing
- For Use With: See table
- Max. Temperature: 250° F, except hose fittings are unrated.
- Tubing:
304 Stainless Steel: Use with 304/304L stainless steel that meets ASTM A213, ASTM A269, or ASTM A270, except DIN EN 10357 fittings with only ASTM A269 or ASTM A270
316 Stainless Steel: Use with 316/316L stainless steel that meets ASTM A213, ASTM A269, or ASTM A270, except DIN EN 10357 fittings with only ASTM A269 or ASTM A270 - Specifications Met: See table
Weld these fittings to tubing for a permanent, flush connection that permits smooth flow through a line.
304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
DIN EN 10357 fittings meet an international standard for butt-weld fitting specifications. This standard is common in the food and chemical industries.
For technical drawings and 3-D models, click on a part number.
Caps
| For Tube OD | Max. Pressure | Max. Vacuum | Wall Thick. | For Use With | Specifications Met | Each | |
304/304L Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|
Polished | |||||||
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 000000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 2 1/2" | 450 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | 0.083" | Air, Food, Water | __ | 00000000 | 00000 |
| 19mm | Not Rated | Not Rated | 1.5mm | Dairy, Food | DIN EN 10253-4 | 00000000 | 00000 |
| 23mm | Not Rated | Not Rated | 1.5mm | Dairy, Food | DIN EN 10253-4 | 00000000 | 00000 |
| 29mm | Not Rated | Not Rated | 1.5mm | Dairy, Food | DIN EN 10253-4 | 00000000 | 00000 |
| 35mm | Not Rated | Not Rated | 1.5mm | Dairy, Food | DIN EN 10253-4 | 00000000 | 00000 |
| 41mm | Not Rated | Not Rated | 1.5mm | Dairy, Food | DIN EN 10253-4 | 00000000 | 00000 |
| 53mm | Not Rated | Not Rated | 1.5mm | Dairy, Food | DIN EN 10253-4 | 00000000 | 00000 |
| 70mm | Not Rated | Not Rated | 2mm | Dairy, Food | DIN EN 10253-4 | 00000000 | 00000 |
| 85mm | Not Rated | Not Rated | 2mm | Dairy, Food | DIN EN 10253-4 | 00000000 | 00000 |
| 104mm | Not Rated | Not Rated | 2mm | Dairy, Food | DIN EN 10253-4 | 00000000 | 00000 |
Dull | |||||||
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 2 1/2" | 450 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | 0.083" | Air, Food, Water | __ | 00000000 | 00000 |
| 6" | 120 psi @ 72° F | 10 -6 torr @ 72° F | 0.109" | Air, Food, Water | __ | 00000000 | 000000 |
316/316L Stainless Steel | |||||||
Polished | |||||||
| 1/2" | 1,200 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 3/4" | 1,000 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 0000000 | 00000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 0000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 0000000 | 00000 |
| 2 1/2" | 450 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 0000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 0000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | 0.083" | Air, Food, Water | __ | 0000000 | 00000 |
| 6" | 120 psi @ 72° F | 10 -6 torr @ 72° F | 0.109" | Air, Food, Water | __ | 0000000 | 000000 |
| 19mm | Not Rated | Not Rated | 1.5mm | Dairy, Food | DIN EN 10253-4 | 0000000 | 00000 |
| 23mm | Not Rated | Not Rated | 1.5mm | Dairy, Food | DIN EN 10253-4 | 0000000 | 00000 |
| 29mm | Not Rated | Not Rated | 1.5mm | Dairy, Food | DIN EN 10253-4 | 0000000 | 00000 |
| 35mm | Not Rated | Not Rated | 1.5mm | Dairy, Food | DIN EN 10253-4 | 0000000 | 00000 |
| 41mm | Not Rated | Not Rated | 1.5mm | Dairy, Food | DIN EN 10253-4 | 0000000 | 00000 |
| 53mm | Not Rated | Not Rated | 1.5mm | Dairy, Food | DIN EN 10253-4 | 0000000 | 00000 |
| 70mm | Not Rated | Not Rated | 2mm | Dairy, Food | DIN EN 10253-4 | 0000000 | 00000 |
| 85mm | Not Rated | Not Rated | 2mm | Dairy, Food | DIN EN 10253-4 | 0000000 | 00000 |
| 104mm | Not Rated | Not Rated | 2mm | Dairy, Food | DIN EN 10253-4 | 0000000 | 00000 |
Dull | |||||||
| 1/2" | 1,200 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 3/4" | 1,000 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 2 1/2" | 450 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | 0.083" | Air, Food, Water | __ | 00000000 | 00000 |
| 6" | 120 psi @ 72° F | 10 -6 torr @ 72° F | 0.109" | Air, Food, Water | __ | 00000000 | 000000 |
Standard-Wall Butt-Weld Steel Unthreaded Pipe Fittings
Butt-weld fittings allow for a smooth connection that provides maximum flow. They have beveled ends that, when flush to pipe, create a trough for a strong, permanent weld. Fittings are also known as Schedule 40. They are for use in noncorrosive environments.
For technical drawings and 3-D models, click on a part number.
Caps
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Specifications Met: ASTM A234, ANSI/ASME B16.9
- Pipe Nipples and Pipe: Use Schedule 40 steel
- Flanges: Use Class 150 steel
| Pipe Size | Wall Thick. | Construction | Each | |
| 1/2 | 0.109" | Welded | 000000000 | 000000 |
| 3/4 | 0.113" | Welded | 000000000 | 00000 |
| 1 | 0.133" | Welded | 000000000 | 00000 |
| 1 1/4 | 0.14" | Welded | 000000000 | 00000 |
| 1 1/2 | 0.145" | Welded | 000000000 | 00000 |
| 2 | 0.154" | Welded | 000000000 | 00000 |
| 2 1/2 | 0.203" | Welded | 000000000 | 00000 |
| 3 | 0.216" | Welded | 000000000 | 00000 |
| 4 | 0.237" | Welded | 000000000 | 00000 |
| 6 | 0.28" | Welded | 000000000 | 00000 |
| 8 | 0.322" | Welded | 000000000 | 00000 |
Thick-Wall Butt-Weld Steel Unthreaded Pipe Fittings
With thick walls, these fittings are the strongest steel butt-weld fittings we offer. Weld them flush against pipe to provide a smooth connection for maximum flow. Fittings have beveled ends that create a trough for a leak-resistant, permanent weld. Use in noncorrosive environments.
For technical drawings and 3-D models, click on a part number.
Caps
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Specifications Met: ASTM A234
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 steel
| Pipe Size | Wall Thick. | Construction | Each | |
| 1/2 | 0.147" | Seamless | 0000000 | 000000 |
| 3/4 | 0.154" | Seamless | 0000000 | 00000 |
| 1 | 0.179" | Seamless | 0000000 | 00000 |
| 1 1/4 | 0.191" | Seamless | 0000000 | 00000 |
| 1 1/2 | 0.2" | Seamless | 0000000 | 00000 |
| 2 | 0.218" | Seamless | 0000000 | 00000 |
| 2 1/2 | 0.276" | Seamless | 0000000 | 00000 |
| 3 | 0.3" | Seamless | 0000000 | 00000 |
| 4 | 0.337" | Seamless | 0000000 | 00000 |
| 6 | 0.432" | Seamless | 0000000 | 00000 |
Standard-Wall Butt-Weld Aluminum
Unthreaded Pipe Fittings
Also known as Schedule 40 fittings, these have thicker walls than our thin-wall aluminum unthreaded pipe fittings. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow. Fittings are lightweight with good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Caps
- For Use With: Air, Oil, Water
- Specifications Met: ANSI/ASME B16.9
- Pipe: Use Schedule 40 aluminum
- Flanges: Use Class 125 aluminum
| Pipe Size | Wall Thick. | Construction | Each | |
| 1/2 | 0.109" | Seamless | 000000000 | 0000000 |
| 3/4 | 0.113" | Seamless | 000000000 | 000000 |
| 1 | 0.133" | Seamless | 000000000 | 000000 |
| 1 1/4 | 0.14" | Seamless | 000000000 | 000000 |
| 1 1/2 | 0.145" | Seamless | 000000000 | 000000 |
| 2 | 0.154" | Seamless | 000000000 | 000000 |
| 2 1/2 | 0.203" | Seamless | 000000000 | 000000 |
| 3 | 0.216" | Seamless | 000000000 | 000000 |
| 4 | 0.237" | Seamless | 000000000 | 000000 |