Common metals and their alloys; metal building materials; ironmongery; pipes and tubes of metal; cast iron; ductile iron; water pipes; rain water pipes; drainage pipes; pipe fittings; fabricated pipes; metal valves and valves for pipes; valve assemblies of metal; junctions of metal; ductile iron pipes, fittings, couplings, connectors and adapters; cast iron pipes, fittings, couplings, connectors and adaptors; flange adapters of metal; re-enforcement for pipe joints; elbows of metal; collars; foundry moulds; couplings and cast parts for the assembly, jointing, installation and repair of pipelines; parts and fittings for all of the aforesaid goods.;