6 Metal goods for use with pipes, namely, pipe connectors; metal pipe adaptors, namely elbows, tees, o-rings, hex plugs, hex heads, plugs, blanking plugs, pipe nipples and pipe coupling; metal air pipes; metal pipe attachments namely swivels, clevis hangers, lug plates, clamps, pipe stays, pipe brackets, hangers, clips and rings; clamp connectors of metal for pipes; metal clamps or clips for cables and pipes; coated aluminium pipe fittings; collars of metal for fastening pipes; metal connection pipes for use in plumbing; metal pipe couplings and flanges; metal hinges; metal connectors for hydraulic lines; metal connectors for use in connecting gas line tubing; manually operated metal tank valves for controlling the flow of liquids or gases in pipelines; metal connector anchorages; metal connectors or fittings for pipes for joining or terminating hydraulic tubing, pipework and hoses; metal connectors for use in connecting gas line tubing; metal pipes, tubes or connectors for scaffolding