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180 degree elbow
Describe： A 180 degree elbow is a pipe fitting that changes the direction of a pipeline in a piping system. The commonly used elbows in fluid pipeline engineering construction are 45 °, 90 °...
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A 180 degree elbow is a pipe fitting that changes the direction of a pipeline in a piping system. The commonly used elbows in fluid pipeline engineering construction are 45 °, 90 °, and 180 °, and other non-standard elbows such as 60 ° can be customized according to project needs. The methods of connecting 180 degree elbows include direct butt welding, flange connection, threaded connection, and socket connection. Elbows are a commonly used type of pipe fittings widely used in basic engineering such as chemical, construction, water supply, drainage, petroleum, light and heavy industries, refrigeration, sanitation, plumbing, fire protection, power, aerospace, shipbuilding, etc
180 degree elbows are classified into carbon steel and stainless steel based on their materials; Carbon steel: (20 #, A3, Q235, Q23 excellent, Q235B, 20G, 16Mn, ASTM A234WPB, ASTM A105, etc.); Stainless steel: (304, 304L, 316, 316L, S30408, S30403, S31608, S31603, SUS304, ASTM A403, TP321, TP317L, 347, 0Cr18Ni9, 00Cr19Ni10, 00Cr17Ni14Mo2, 1Cr18Ni9Ti, 06Cr17Ni12Mo2, 022Cr17Ni12Mo2, etc.)Chinese pipe fittings manufacturing standards:
GB/T12459-2017 Steel butt welded seamless pipe fittings
GB/T13401-2017 Steel butt welded seamless pipe fittings
SH/T340-2012 Steel butt welded seamless pipe fittings
SH/T340-1996 Steel butt welded pipe fittings
SH/T3410-2012 Forged steel socket welded pipe fittings
GB/T10752-1995 Marine steel pipe butt welded joints
GB/T12772-1999 Flexible interface cast iron pipes and fittings for drainage
American pipe fittings manufacturing standards:
ASME/ANSI B16.9 Factory manufacturing Seamless steel pipe fittings for butt welding
ASME/ANSI B16.11 socket welding and threaded forging fittings
ASME/ANSI B16.28 steel butt welding small radius elbows and return bends
ASME/ANSI B16.5 pipe flanges and flange fittings
MSS SP-43 forged stainless steel butt welding fittings
MSS SP-83 socket welding and threaded joints
MSS SP-97 socket welding Integral reinforced pipe socket with threaded and welded ends
