... -530mm, +/- 0.05mmb) Thickness: +/- 0.02mmc) Length: +/- 5mmSurface180#, 320#, 400#, Satin / Hairline400#, 500#, 600# Polished, frosting etcTestSquash test, extended test, water ... treatment, NDT cheap and good quality stainless steel tubes or sheets