Drain channels, not of metal; Drain gullies, not of metal; Drain pipes, not of metal; Non-metallic bushings (parts of drains or gutters); Non-metallic drainage channels; Non-metallic drainage pipes; Non-metallic pipes (drain); Rainwater drainage apparatus of plastic materials; Sluices (drains) not of metal; Non-metallic rigid pipes; Non-metallic sewer pipes; Non-metallic water pipes (other than parts of sanitary installations); Plastic pipes (rigid) for water; Rigid pipes (not of metal); Non-metallic conduits for water discharge; Sewer liners of plastic material; Branching pipes, not of metal

Cleaning of drains; Drainage services; Land drainage; Maintaining and repair of drain pipes; Sewer pipe maintenance; Sewer pipe renovation; Sewer pipe servicing; Maintenance of plumbing; Plumbing; Renovation of plumbing; Building construction; Construction; Irrigation devices installation and repair