... polished,black 4.shape:round,square,RE stainless steel welded pipe :stainless steel welded pipe :1.OD:9.5-219mm2 ... : automatic shape, cold drawn, nitrogen protection7) Standard : Q/GBS1-2005, customers requests available8) Polishing: Pickling,annealing,manual ... mirror polish9) Application: construction, upholstery, industrial instrument Type:stainless steel welded pipeSizes:O.D 9.5mm-219mm ; Square tube ...