stainless steel pipe use for stair railing,windows guards,Door Thickness ... the nature, To the excellence. NameStainless Steel Railing StandardASTM A312, A249,A269 and A270,A554Material ... / Hairline400G, 600G Mirror finishApplicationhandrail,railing, staircase, weldmesh screen,door,window, balcony,fence,bench,furniture,etcTestSquash test, ... Line Polishing Line Bend: stainless steel Stair railing