ASTM/ASME and API Specification  

Product Name	Executive standard	Dimension	Steel Code/ Steel Grade
Specification for casing and Tubing	API 5CT	φ26.67～168×2.17～12.06	J55,N80
Specification for line pipe	API 5L	φ10.3～610×1.7～40	A,B
Black and Hot-Dipped Zinc-Coated Steel Pipe, Welded and Seamless	ASTM A53	φ10.3～426×1.0～36	A,B
Seamless Carbon Steel for High Temperature Service	ASTM A106	φ10.3～426×1.0～36	A,B
Seamless Cold-Drawn Low-Carbon Steel Heat Exchanger and Condenser Tubes	ASTM A179	φ10.3～426×1.0～36	Low Carbon Steel
Seamless Carbon Steel Boiler Tubes for High Pressure	ASTM A192	φ10.3～426×1.0～36	Low Carbon Steel
Seamless Cold-Drawn Internediate AlloySteel Heat-Exchanger and CondenserTubes	ASTM A199	φ10.3～426×1.0～36	T5,T22
Seamless Medium-Carbon Steel Boiler and Superheater Tubes	ASTM A210	φ10.3～426×1.0～36	A1,C
Seamless Ferritic and Austenitic Alloy Steel Boiler, Superheater and Heat-Exchanger Tubes	ASTM A213	φ10.3～426×1.0～36	T2, T5, T11, T22
Seamless Carbon and alloy steel for mechanical Tubing	ASTM A519	φ10.3～426×1.0～36	Carbon Steel, Alloy Steel
Seamless Cold-Drawn Carbon Steel Feed water Heater Tubes	ASTM A556	φ10.3～426×1.0～36	A2,B2
Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service	ASTM A335	φ21.3～762×1.0～80	P1,P2,P5,P11, P12 P22, P91

DIN Specification

Product Name	Executive standard	Specification	Steel Code /Steel Grade
Seamless Steel Tube for Elevated Temperature	DIN17175	φ16～426×1.0～36	St35.8,St45.8,17Mn4, 19Mn5,15Mo3,13CrMo44
ColdDrawnSeamless Precision Pipe	DIN2391	φ16～426×1.0～36	St35,St45,St52
Seamless Steel pipe for Structural purpose	DIN2393	φ16～426×1.0～36	RSt34-2,RSt37-2, RSt44-2,St52
Seamless Steel Tube	DIN2448/1629/1630	φ16～426×1.0～36	St37/St37.4, St44/St44.4, St52/St52.4

BS Specification

Product Name	Executive standard	Dimension	Steel Code      Steel Grade
Seamless Steel Tubes for Machine structural	BS970	φ10～426×1.0～36	Carbon Steel
Seamless Steel Tubes for Boiler and Heat Exchangers	BS3059	φ10～426×1.0～36	360,410,460,480,490