... 2, ASTM A36,S235JR,S355JR,SS4001.8-12mm,1250/1500mmWidely used in light industry,decoration,machinary furniture,automobile,industry instrument,agriculture,etc.Seamless Steel ... structure Alloy Steel PipeDin2391 17 Cr3, ST52, A335P11,P5,P910,P22, ST37, STK400GB5310-2008, ASTM A335/A335M ASTM A213/A213M ... ASTM,API5L2.1-110mm,10.3-508mmUsed in oil & gas fieldsWelded Steel Pipe10#,20#,45#,Q195,Q215,Q235,Q345 ...