stainless steel pipe and tube s:0.5-30mm D 6-630mm, Length:0-2000mm Standard:AISI,GB,ASTM 201 steel pipe and tube1.Grade: 201 ... , 202, 304, 304L, 316L, 309S, 321, 400, 410, 430, 4392. ... /A249, A312, GB151, GB12771, HG20537MaterialGrade: 304, 304L,310s 316, 316L,321,840SurfaceStain Direction / Mirror / Custom (SSS / PSS / PVD),G400# satin ...