金属的处理和包覆；机加工

This class includes: - plating, anodizing etc. of metals - heat treatment of metals - deburring, sandblasting, tumbling, cleaning of metals - colouring and engraving of metals - non-metallic coating of metals: * plasticizing, enamelling, lacquering etc. - hardening, buffing of metals - boring, turning, milling, eroding, planing, lapping, broaching, levelling, sawing, grinding, sharpening, polishing, welding, splicing etc. of metalwork pieces - cutting of and writing on metals by means of laser beams

This class excludes: - activities of farriers, see 0162 - rolling precious metals onto base metals or other metals, see 2420