The normal types of Pipe fittings

(Carbon & Alloy Steel)

• KS B 1522: Steel Butt-Welding Pipe Fittings for Ordinary use.
• 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 2314: Steel Socket-Welding Pipe Fittings.

ANSI : AMERICAN NATIONAL STANDARDS INSTITUTE

• 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 Steel Fittings, Socket-Welding and Threaded.
• ANSI B 16.25: Butt-Welding Ends.
• ANSI B 16.28: Wrought Steel Butt-Welding short Radious Elbow and Returns.
• ANSI B 36.10: Welded and Seamless Wrought Steel Pipe.
• ANSI B 36.19: Stainless Steel Pipe.

• ASTM A105: Forging, Carbon Steel for Piping Components.
• ASTM A182: Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings, and valves and Parts for High-Temperature Service.
• ASTM A234: Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and Elevated Temperatures.
• ASTM A350: Forgings Carbon and Low-Alloy Steel, Requiring Notch Toughness Testing for Piping Components.
• ASTM A403: Wrought Austenitic Stainless Steel Piping Fittings.
• ASTM A420: Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service.
• ASTM A815: Specification for Wrought Ferritic, Ferritic/Austenitic, and Martensitic Stainless Steel Piping 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: 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: Meterials.
• ASME SECTION Ⅲ: Subsection NCA / Division 1 / Division 2
• ASME SECTION Ⅴ: Nondestructive Examination.
• ASME SECTION Ⅷ: Rules for Construction of Pressure Vessels / Division 1, Division 2
• ASME SECTION Ⅸ: Welding and Brazing Qualifications.

• API 5L: Line Pipe.
• API 5LX: High Test Line Pipe.