1..Surface:Polished, frosting etc. 2.used in construction,weld,hotel and other places 3.material:300series Introduction 1.Application scopeDecoration, construction ... from extra scratches. Both ends of the pipes are very clean and with no burr.4.Quality guaranteeThe Roundness is ... test, water pressure test, crystal rot test, heat treatment, NDT cheap and good quality stainless steel tubes or sheets