Branching pipes, not of metal; Ducts, not of metal, for ventilating and air-conditioning installations; Non-metal gutter pipes; Non-metal water pipes; Rigid pipes, not of metal, for building; Water-pipes, not of metal; Branching pipes, not of metal; Building materials, namely, plastic pipe supports; Non-metal gutter pipes; Non-metal water pipes; Non-metallic drainage pipes; Rigid pipes, not of metal, for building; Water-pipes, not of metal