Treatment and coating of metals; machining

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