... : 304, 304L, 310S, 316L, 317L, 321, 347, and So on. Seamless and Stainless Steel Tube1) Material: 304, 304L, 310S, 316L, 317L ... (0.5-16)mm.4) Polishing: 180#, 240#, 320#, 400#, 600# etc.5) OD Tolerance: +/-0.15mm6) Thickness: +/-10% of wall ...