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KS : KOREAN INDUSTRIAL STANDARDS

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KS B 1543 Steel Butt-Welding Pipe Fittings.

JIS : JAPANEESE INDUSTRIAL STANDARDS

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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 : AMERICAN NATIONAL STANDARDS INSTITUTE

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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 Elbows and Returns.
ANSI B 36.10 Welded and Seamless Wrought Steel Pipe.
ANSI B 36.19 Stainless Steel Pipe.

ASTM : AMERICAN SOCIETY FOR TESTING AND METERIALS

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ASTM A 105 Forging, Carbon Steel for Piping Components.
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 Elevated Temperature.
ASTM A 350 Forgings Carbon and Low-Alloy Steel, 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 815 Specification for Wrought Ferritic, Ferrite/ Austenitic, and Martensitic Stainless Steel Piping Fittings.

MSS : MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS INDUSTRY

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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 : AMERICAN SOCIETY OF MECHANICAL ENGINEERS

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ASME SECTION Ⅱ Materials.
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.

KEPIC : KOREA ELECTRIC POWER INDUSTRY CODE

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KEPIC MN Nuclear Components.

API : AMERICAN PETROLEUM INSTITUTE

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API 5L Line Pipe.
API 5LX High Test Line Pipe.
API 6A Wellhead and Christmas Tree Eguipment