Cutting,NCT punching,welding and riveting part. Remove all sharp edges. Powder coating. Fine quality. Competitive price. Aluminium metal box This is an ... -blast powder coating.The processes involved are cutting,NCT punching,welding and riveting.The manufacture range of our NCT punch press ... ), CR (st12), Galvanized Steel, Stainless Steel (304, 310, 316, 439), Aluminium, Angle, Tube, Flat bar, etc.