Thermoplastic products and piping systems for the control, containment and transport of high purity and reverse osmosis deionized water, corrosive and abrasive fluids and corrosive and volatile fumes, namely, high purity piping systems consisting of non-metal water pipes made of polypropylene and polyvinylidene fluoride for the transport of high purity and reverse osmosis deionized water, and non-metal fittings made from polypropylene and polyvinylidene fluoride for non-metal rigid water pipes in the nature of non-metal tees for rigid water pipes, non-metal elbows for rigid water pipes, non-metal reducers for rigid water pipes, non-metal stub ends for rigid water pipes, non-metal backing rings for rigid water pipes, non-metal back ends for rigid water pipes, and non-metal adapters for rigid water pipes; dual laminate piping systems made from polypropylene, polyvinylidene fluoride and ethylene chlorotrifluoroethylene consisting of non-metal dual laminate rigid pipes made of polypropylene, polyvinylidene fluoride and ethylene chlorotrifluoroethylene for the containment and transport of corrosive and abrasive fluids, and non-metal fittings made from polypropylene, polyvinylidene fluoride and ethylene chlorotrifluoroethylene for non-metal dual laminate rigid pipes used in the containment and transport of corrosive and abrasive fluids in the nature of non-metal tees for dual laminate rigid pipes, non-metal elbows for dual laminate rigid pipes, non-metal reducers for dual laminate rigid pipes, non-metal stub ends for dual laminate rigid pipes, non-metal backing rings for dual laminate rigid pipes, non-metal back ends for dual laminate rigid pipes, and non-metal adapters for dual laminate rigid pipes; double wall piping systems for the control, containment and transport of corrosive and abrasive fluids and corrosive and volatile fumes consisting of non-metal double containment pipes made from PVC, chlorinated polyvinyl chloride, polypropylene, high density polyethylene, polyvinylidene fluoride and ethylene chlorotrifluoroethylene for containing and transporting liquids and fumes and non-metal fittings made from PVC, chlorinated polyvinyl chloride, polypropylene, high density polyethylene, polyvinylidene fluoride and ethylene chlorotrifluoroethylene for non-metal double containment pipes in the nature of non-metal tees for non-metal double containment pipes, non-metal elbows for non-metal double containment pipes, non-metal reducers for non-metal double containment pipes, non-metal laterals for non-metal double containment pipes, non-metal end caps for non-metal double containment pipes, non-metal p-traps for non-metal double containment pipes, non-metal restraints for non-metal double containment pipes, and non-metal supports for non-metal double containment pipes; and non-metal duct pipes made from high density polyethylene, polyvinyl chloride, polypropylene, chlorinated polyvinyl chloride, flame retardant polypropylene, electrically conductive flame retardant polypropylene and polyvinylidene fluoride for the exhaust of fumes, gases and odors, non-metal duct connectors made from high density polyethylene, polyvinyl chloride, polypropylene, chlorinated polyvinyl chloride, flame retardant polypropylene, electrically conductive flame retardant polypropylene and polyvinylidene fluoride in the nature of non-metal molded tees for rigid ducts, non-metal molded elbows for rigid ducts, non-metal molded reducers for rigid ducts, non-metal molded laterals for rigid ducts, non-metal wyes for rigid ducts, and non-metal molded end caps for rigid ducts