square stainless steel tube 1.cold drawn/cold pilgered/hot rolled 2.Surface:pickled/annealed/mirror polished/Brushed ISO9001 square stainless steel tube1.Standards:AISI,ASTM ... ,304,304L,304N,305,308,309, 309S,310,310S,314,316,316L,316Ti,316Nb,316N,316LN,317, 321,347,405,429 ...