17
Flexible pipes, tubes, hoses and fittings therefor (including valves), and fittings for rigid pipes, all non-metallic; Pipe insulation; Pipe wrappings for insulation purposes; Valve packing sets; Thermal insulation jackets for valves; Non-metallic couplings for pipes; Shaped parts made from electroconductive rubber; Glands for pipes; Non-metallic insulated pipes; Pipes made of plastic for motor vehicles; Flexible hoses, not of metal; Non-metallic couplings for pipes; Non-metallic couplings for pipes; Non-metallic couplings for pipes; Seals (Non-metallic -) for pipes; Stuffing rings (Non-metallic -); Pipe linings (Non-metallic -); Fittings [non-metallic] for flexible pipes; Non-metallic coupling sleeves for tubes; Joint connectors (Non-metallic -) for pipes; Glands for pipes; Non-metal elbows for pipes; Junctions, not of metal, for pipes; Plastics in the form of sheets, films, blocks, rods and tubes
19
Rigid pipes, not of metal, for building; Refractory shapes [non-metallic]
20
Pipe fasteners, connectors and holders, non-metallic; Valves of plastic being other than machine parts; Pipe clamps of plastics
35
Wholesale services in relation to the following goods: pipes and hoses and fittings therefor [including valves], mouldings and fittings for rigid pipes, All the aforesaid goods not of metal