1.Material:Gr1, Gr2, Gr3, Gr7, Gr9, Gr12 2.Seamless pipe 3.OD:2.0mm-219mm, WT:0.3mm-12mm 4.Length:up ... /ASTM B337/ASME SB337 /ASTM B861/ASTM B862 GB/T 3624,GB/T 3625 2.Material:Gr1, Gr2, Gr3, Gr7, Gr9, Gr11, Gr12 ... , Gr16, Gr17 3.Seamless pipe 4.OD:2.0-219mm ...