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, ... industry instruments (fencing,railing,safe door/windows,gate fitting,inside staircases ,balcony balustades,furniture,sanitary wares,kitchen wares 304 stainless steel pipe /tube