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KS B 1522
KS B 1541
KS B 1542
KS B 1543
Steel Butt Welding Pipe Fittings for Ordinary use and Fuel gas.
Steel Butt Welding Pipe Fittings.
Steel Socket welding Pipe Fittings.
Steel Plate Butt Welding Pipe Fittings.

JIS B 2311
JIS B 2312
JIS B 2313
JIS B 2316
Steel Butt Welding Pipe Fittings for Ordinary use.
Steel Butt Welding Pipe Fittings.
Steel Plate Butt Welding Pipe Fittings.
Steel Socket welding Pipe Fittings.

ANSI B 16.5
ANSI B 16.9
ANSI B 16.11
ANSI B 16.25
ANSI B 16.28
ANSI B 36.10
ANSI B 36.19
Pipe Flanges and Flanged Fittings.
Factory Made Wrought Steel Butt Welding Fittings.
Forged Fittings, Socket welding and Threaded.
Butt Welding Ends.
Wrought Steel Butt Welding Short Radious Elbows and Returns.
Welded and Seamless Wrought Steel Pipe.
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
ASME SECTION Ⅲ
ASME SECTION Ⅴ
ASME SECTION Ⅷ
ASME SECTION Ⅸ
Materials.
Rules for Construction if Nuclear Facitity Components.
Nondestructive Examination.
Rules for Construction of Pressure Vessels.
Welding and Brazing Qualifications.

API 5L Line Pipe.