... to carry and use cycle is long. Description:1)Standards: ASTM, DIN, BS.2)Materials:Gr1,Gr2,Gr3,Gr4,Gr5,Gr7 ... .5Pd 0.12~0.250.12~0.25 2> Tantalum Pipe we can supplyGradeStandardsDiameter(mm)Gr1,Gr2,Gr3,Gr4,Gr5,Gr7 ... ,Gr9,Gr11,Gr12,Gr23.GB/T 3621 ASTM B3488~120ASTM F136 ASTM F67 Serive: supply the test report