stainless steel tube Application: Petroleum, Chemical, Automobile, Medical Equipment, Boiler Heat-exchanger, Stainless Steel Tube1) Material: 304, 304L, 310S, 316L, 317L, 321, 347, and ... /JIS/EN3) Size: OD (3.18-219)mm*WT(0.5-16)mm.4) Polishing: 180#, 240#, 320#, 400#, 600# etc ... .5) OD Tolerance: +/-0.15mm6) Thickness: +/-10% of wall thickness7) End ...