FLEXIBLE PIPES FORMED FROM CERAMICS, EPOXY RESINS, MEMBRANES, POLYMERIZED RESINS, AND GLASS FIBER FABRIC; INFLATABLE LINING FOR PIPE FORMED FROM WOVEN GLASS FABRIC; ELECTRICAL INSULATING MATERIAL; NAMELY, POLYETHYLENE, POLYVINYL CHLORIDE; AND HARDENABLE RESINS FOR USE IN SEWER PIPES, WATER PIPES, MATERIAL CONVEYANCE PIPES, PIPELINES AND VENTILATION DUCTS ALL FOR USE AS ELECTRICAL INSULATION MATERIAL