... Standard:ASTM-a554 From the nature, To the excellence. Name 201 steel pipeItemsSquare tubes, round tubes, oval pipes, special shaped ... PropertyMaterial Item 201202304316Tensile Strength≥535≥520≥520≥520Yield Strength≥245≥205≥205≥205Extension≥30%≥30%≥35%≥35%Hardness (HV)<105<100<90 ... , special-shaped pipes and etc. Main materials are:304, 201,202,316,316L,430 and so on.ProductProduction LineWarehouse ...