Metal-Treating Machines & Electric Wire Coil-Winders

Metal-working machine tools (headings 8456–8463) shape metal by removing material or by deformation — cutting, grinding, bending, forging. Metal-treating machines under 8479810000 alter the properties or surface condition of metal without primarily shaping it — examples include annealing furnaces, electroplating lines, shot-blasting machines, and wire coil-winders. When a machine both shapes and treats metal, the principal function determines classification.

The HS places coil-winders here because they are mechanical appliances that process metal wire into wound coil form for use in motors, transformers, and inductors — a treatment-oriented operation rather than a cutting or forming one. Importers of automated coil-winding equipment for motor manufacturing should confirm the machine's function aligns with winding rather than wire drawing or insulating, which would point to different headings.