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.
More
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 Use With: Air, Steam, Oil, Water, Natural Gas
- Specifications Met: ASTM A234, ASME B16.9
- Pipe Nipples and Pipe: Use Schedule 40 steel
- Flanges: Use Class 150 steel
Pipe Size | Wall Thickness | Construction | Each | |
| 1/2 | 0.109" | Seamless | 000000000 | 000000 |
| 3/4 | 0.113" | Seamless | 000000000 | 00000 |
| 1 | 0.133" | Seamless | 000000000 | 00000 |
| 1 1/4 | 0.14" | Seamless | 000000000 | 00000 |
| 1 1/2 | 0.145" | Seamless | 000000000 | 00000 |
| 2 | 0.154" | Seamless | 000000000 | 00000 |
| 2 1/2 | 0.203" | Seamless | 000000000 | 00000 |
| 3 | 0.216" | Seamless | 000000000 | 00000 |
| 4 | 0.237" | Seamless | 000000000 | 00000 |
| 6 | 0.28" | Seamless | 000000000 | 00000 |
| 8 | 0.322" | Seamless | 000000000 | 000000 |
| 10 | 0.365" | Seamless | 000000000 | 000000 |
Thick-Wall Butt-Weld Steel Unthreaded Pipe Fittings
With thicker, stronger walls than our standard-wall butt-weld pipe fittings, these fittings stand up to your high strength applications. Weld them flush against pipe for a smooth connection that permits maximum flow. These fittings have beveled ends that create a trough for a leak-resistant, permanent weld. Made of steel, they’re for use in noncorrosive environments.
- 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 | 000000 |
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 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 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 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
Butt-Weld Fittings for Stainless Steel Tubing
- For Use With: See table
- Temperature Range: See table
- 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 ASME BPE and 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.
ASME BPE fittings are polished to a 20 Ra finish for an extra-smooth interior that prevents product buildup and bacteria growth. Use them in pharmaceutical and bioprocessing applications. DIN EN 10357 fittings meet an international standard for butt-weld fitting specifications. This standard is common in the food and chemical industries.
| For Tube OD | Max. Pressure | Max. Vacuum | Temp. Range Min., °F | Temp. Range Max., °F | Wall Thick. | For Use With | Specifications Met | Each | |
304/304L Stainless Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Polished | |||||||||
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 000000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 2 1/2" | 450 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.083" | Air, Food, Water | __ | 00000000 | 000000 |
| 19mm | Not Rated | Not Rated | Not Rated | 250° | 1.5mm | Dairy, Food | DIN EN 10253-4 | 00000000 | 00000 |
| 29mm | Not Rated | Not Rated | Not Rated | 250° | 1.5mm | Dairy, Food | DIN EN 10253-4 | 00000000 | 00000 |
| 41mm | Not Rated | Not Rated | Not Rated | 250° | 1.5mm | Dairy, Food | DIN EN 10253-4 | 00000000 | 00000 |
| 53mm | Not Rated | Not Rated | Not Rated | 250° | 1.5mm | Dairy, Food | DIN EN 10253-4 | 00000000 | 00000 |
| 70mm | Not Rated | Not Rated | Not Rated | 250° | 2mm | Dairy, Food | DIN EN 10253-4 | 00000000 | 00000 |
| 85mm | Not Rated | Not Rated | Not Rated | 250° | 2mm | Dairy, Food | DIN EN 10253-4 | 00000000 | 00000 |
Dull | |||||||||
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 2 1/2" | 450 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.083" | Air, Food, Water | __ | 00000000 | 00000 |
| 6" | 120 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.109" | Air, Food, Water | __ | 00000000 | 000000 |
316/316L Stainless Steel | |||||||||
Polished | |||||||||
| 1/4" | 200 psi @ 72° F | __ | -65° | 200° | 0.035" | Air, Deionized Water, Pharmaceuticals, Water | ASME BPE | 000000000 | 00000 |
| 3/8" | 200 psi @ 72° F | __ | -65° | 200° | 0.035" | Air, Deionized Water, Pharmaceuticals, Water | ASME BPE | 000000000 | 00000 |
| 1/2" | 1,200 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 3/4" | 1,000 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 0000000 | 00000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 0000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 0000000 | 00000 |
| 2 1/2" | 450 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 0000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 0000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.083" | Air, Food, Water | __ | 0000000 | 00000 |
| 6" | 120 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.109" | Air, Food, Water | __ | 0000000 | 000000 |
Dull | |||||||||
| 1/2" | 1,200 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 3/4" | 1,000 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 2 1/2" | 450 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.083" | Air, Food, Water | __ | 00000000 | 00000 |
| 6" | 120 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 0.109" | Air, Food, Water | __ | 00000000 | 000000 |