Butt-Weld Pipe U-Bends | McMaster-Carr

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15 Products

About Pipe and Fittings

Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

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.

180° bend connectors are also known as U-bends.

180° Bend Connectors

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
3/4	0.113"	Seamless	43425K123	0000000
1	0.133"	Seamless	43425K133	000000
1 1/4	0.14"	Seamless	43425K143	000000
1 1/2	0.145"	Seamless	43425K153	000000
2	0.154"	Seamless	43425K163	000000
2 1/2	0.203"	Seamless	43425K173	000000
3	0.216"	Seamless	43425K183	000000
4	0.237"	Seamless	43425K213	000000
6	0.28"	Seamless	43425K233	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.

180° bend connectors are also known as U-bends.

180° Bend Connectors

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 1/2	0.2"	Seamless	4981T85	0000000
2	0.218"	Seamless	4981T86	000000
2 1/2	0.276"	Seamless	4981T87	000000
3	0.3"	Seamless	4981T88	000000
4	0.337"	Seamless	4981T89	000000
6	0.432"	Seamless	4981T67	000000