6
Building materials of metal; Pipes and tubes of metal; Floor drains of metal; Drain covers of metal; Drain plugs of metal; Junctions of metal for pipes including those from alloy steel and titanium; Gutter connection pieces of metal
11
Air-conditioning apparatus; Water supply installations; Apparatus for the supply of water for sanitary purposes; Sewerage installations; Waste fittings for sanitary ware; Sanitary installations, water supply and sanitation equipment
17
Non-metallic couplings for rigid pipes; Watertight rings for plumbing pipes; Rings (Water-tight -); Sealant compounds for joints; Pipe jointing compounds for preventing leakage; Pipe fittings [junctions] (non-metallic -); Flexible tubing for insulation purposes; Stuffing rings (Non-metallic -); Gaskets
19
Non-metallic rigid pipes and building materials (non-metallic) for water supply and sanitary purposes; Floor drains of non-metallic materials; Floor drainage channels made of non-metallic materials; Sluices [drains] not of metal; Manhole covers, not of metal; Channel covers of non-metallic materials; Rigid pipes and valves therefor, non-metallic; Drainage installations (Non-metallic -); Brackets, not of metal, for building; Fire resistant collars (Non-metallic -) for pipes; Drain gullies, not of metal
20
Drain traps [valves] of plastic; Blanking plugs; Stools; Coat pegs [stands] non-metallic; Towel stands [furniture]
37
Installation, repair and maintenance of apparatus for ventilations, water supply and sanitary purposes; installation, repair and maintenance of non-metallic rigid pipes and building materials (non-metallic) for water supply and sanitary purposes; Services for the repair of drains; Services for the installation of drains