... grade material in China. 2,advanced testing equipment. 3,competitive price . stainless steel pipe 3091.ASTM,DIN,JIS,EN,KS,ASMEASTM (ASME) SA ... ,316,316L,316Ti,321,347h,904l201,2023.stainless steel pipe 309 polished,annealing. stainless steel pipe 309 1.Sizes:Diameter:6-610mm Wall Thickness ... :0.5-60mmO.D:3/8",1/2",3/4",1",1 ...