... steel, carbon steel, alloy steel ,iron ,alloy, 2.Standard: ASTM\DIN\BS\JIS3.Surface finish: passivated, stain polished, mirror polished, e-coating and ... furnace, box resistance furnace, cutting head machine, shot-blasting machine, sand-blasting ... , solid solution.Testing facilityspectrometer, tensile test machine, hardness test machine, mircoscope. China Marine Hardware/steel part-made in China