Detailed Product Description The perform to standard : ASTM A53, ASTM A106, ASTM A178, ASTM A179,ASTM A192, ASTM A210, ASTM A513-5,ASTM A519, DIN 2391, DIN 2393, DIN1629, DIN2445,DIN2448, DIN2458, DIN17100, DIN17175, EN10305-1, EN10305-2, EN10210, EN10216, BS3059, BS3601, BS3602, BS3606 etc. Carbon steel grade : SAE1010, SAE1020, SAE1035, SAE1045, ST35, ST35.8, ST37, ST37-2,ST37.4, ST44, ST44-2, ...