... steel tube 201 Specification :Round tube (mm) :6-406.4 (thickness:0.2--8.0 )Square tube(mm):10 ... tee, flangeChemical Composition of 201 stainless steel tube: Chemical Composition(%)CMnSiCrNiSPN≤0.155.5-7.50 ... , fluid pipe, surgical operation equipment ,building, decorate tube, boiler pipe, oil pipe, gas pipe, API ... .alibaba.com/ Seamless Stainless Steel Tube for sanitary equipment and food equipment