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KS B 1522 Steel Butt Welding Pipe Fittings for Ordinary use and Fuel gas.
KS B 1541 Steel Butt Welding Pipe Fittings.
KS B 1542 Steel Socket welding Pipe Fittings.
KS B 1543 Steel Plate Butt Welding Pipe Fittings.
 
JIS B 2311 Steel Butt Welding Pipe Fittings for Ordinary use.
JIS B 2312 Steel Butt Welding Pipe Fittings.
JIS B 2313 Steel Plate Butt Welding Pipe Fittings.
JIS B 2316 Steel Socket welding Pipe Fittings.
 
ANSI B 16.5 Pipe Flanges and Flanged Fittings.
ANSI B 16.9 Factory Made Wrought Steel Butt Welding Fittings.
ANSI B 16.11 Forged Fittings, Socket welding and Threaded.
ANSI B 16.25 Butt Welding Ends.
ANSI B 16.28 Wrought Steel Butt Welding Short Radious Elbows and Returns.
ANSI B 36.10 Welded and Seamless Wrought Steel Pipe.
ANSI B 36.19 Stainless Steel Pipe.
 
ASTM A 105 Carbon Steel Forgings for Piping Applications.
ASTM A 182 Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service.
ASTM A 234 Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service.
ASTM A 350 Carbon and Low-Alloy Steel Forgings, Requiring Notch Toughness Testing for Piping Components.
ASTM A 403 Wrought Austenitic Stainless Steel Piping Fittings.
ASTM A 420 Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service.
ASTM A 694 Carbon and Alloy steel Forgings for Pipe Flanges, Fittings, Valves, and Parts for High-Pressure transmission Service.
ASTM A 815 Wrought Ferritic, Ferrite/ Austenitic, and Martensitic Stainless steel Piping Fittings.
ASTM A 860 Wrought High-Strength Low-Alloy steel Butt Welding Fittings.
ASTM B 366 Factory-Made Wrought Nickel and Nickel Alloy Fittings
 
MSS SP-25 Standard Marking System for Valves, Fittings, Flanges and Unions.
MSS SP-43 Wrought Stainless Steel Butt Welding Fittings.
MSS SP-44 Standard for Steel Pipe Line Flanges.
MSS SP-75 Specification for High Test Wrought Butt Welding Fittings.
MSS SP-79 Socket Welding Reducer Inserts.
MSS SP-83 Carbon Steel Pipe Unions Socket welding and Threaded.
MSS SP-87 Factory-Made Butt Welding Fittings for Class 1 Nuclear Piping Applications.
MSS SP-95 Swage(d) Nipples and Bull Plugs.
MSS SP-97 Integrally Reinforced Forged Branch Outlet Fittings-socket Welding, Threaded and Butt Welding Ends.
 
ASME SECTION Ⅱ Materials.
ASME SECTION Ⅲ Rules for Construction if Nuclear Facitity Components.
ASME SECTION Ⅴ Nondestructive Examination.
ASME SECTION Ⅷ Rules for Construction of Pressure Vessels.
ASME SECTION Ⅸ Welding and Brazing Qualifications.
 
API 5L Line Pipe.