... grade:Gr1,Gr2,Gr5,Gr7,Gr9,Gr12,Gr23 standard:ASTM B337/B338,ASTM B861 ISO9001:2008,ISO14001:2004,CE pure titanium pipe ... ASTM B338/337Specification 1.grade:Gr1,Gr2,Gr5,Gr7,Gr9,Gr232.standard:ASTM ... B337/B338,ASTM B8613.W.T:1.0-20mm4.Dia:5-159mm5 ...