... (2-219)*WT(0.3-15) 2)Material: Gr1,Gr2,Gr3,Gr5 3)Quality guarantee 4)In large stock... Titanium exhaust ... GB/T 3624,GB/T 3625 2.Material:Gr1, Gr2, Gr3, Gr7, Gr9, Gr11, Gr12, Gr16, Gr17 3.Seamless pipe 4 ... GB/T 3624,GB/T 3625 2.Material:Gr1, Gr2, Gr3, Gr7, Gr9, Gr11, Gr12, Gr16, Gr17 3.Seamless pipe 4 ...