Brackets, not of metal, for building; Branching pipes, not of metal; Building materials, namely, plastic pipe supports; Clay-based industrial sealant used to seal and prevent leakage from foundry mold components in metalcasting applications; Drain pipes, not of metal; Plastic conduit for drainage; Plastic conduit for drainage and irrigation; Plastic conduit for irrigation; Polyethylene pipe used in geothermal heating and cooling systems; PVC railings; Sewer pipes, not of metal; Storm water ma...