Unwrought and partly wrought common metals and their alloys; rolled and cast building materials; metallic pipes and tubes; other goods in non-precious metal not included in other classes; steel pipe, pipe fittings, valves for pipes, flexible hose of metal, bellows, flexible bellows, expansion joints, flexible couplings, clamp valves, pipe spools, joints for pipes, fluid indicators, pipe baffles; steel pipe, fittings and valves, all lined with plastic material for industrial use; flexible hose of steel wire with plastic lining for industrial use; flexible bellow with metal ends, and expandion joints for piping

Articles made of gutta percha, indiarubber, balata and substitutes not included in other classes; plastics in the form of sheets, blocks and rods, being for use in manufacture; hose pipes (non-metallic); plastics in the form of tubes and shaped sections, hose pipes and pipe fittings made wholly or principally of non-metallic materials