... : 1.Grade:201,202,301,304,316L,etc 2.OD:9.53-254mm,TK:0 ... Standard:ASTM-a554 From the nature, To the excellence. Name 304 steel pipeItemsSquare tubes, round tubes, oval pipes, special shaped ... A269 and A270Material Grade201: Ni 0.8%~1%202: Ni 3.5%~4.5%304: Ni 8%, Cr 18%316: Ni 10%, ... pipes, special-shaped pipes and etc. Main materials are:304, 201,202,316,316L,430 and so on.ProductProduction LineWarehouse ...