International Specification & Standards of Industrial Steel Pipe Fittings, Flanges

• KS B 1522: Steel Butt Welding Pipe Fittings for Oidinary 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.

• 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, Ferritic/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 Marketing 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 Union 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 Fittingssocket Welding, Threaded and Butt Welding Ends.

• ASME B 16.5: Pipe Flanges and Flanged Fittings.
• ASME B 16.9: Factory Made Wrought Steel Butt Welding Fittings
• ASME B 16.11: Forged Fittings, Socket welding and Threaded
• ASME B 16.25: Butt Welding Ends
• ASME B 36.10: Welded and Seamless Wrought Steel Pipe.
• ASME B 36.19: Stainless Steel Pipe
• ASME B31.1: Power piping.
• ASME B31.3: Process piping.
• ASME SECTION II: Materials
• ASME SECTION III : Rules for Construction of Nuclear Facirity Components.
• ASME SECTION V: Nondestructive Examination
• ASME SECTION VII: Rule for Construction of Pressure Vessels.
• ASME SECTION IX: Welding and Brazing Qualifications.

• API 5L: Line Pipe