Rigid PVC conduit. Typical industrial/commercial and residential applications for IPEX electrical systems include: utilities, cable, communications, street and highway lighting, residential applications, water treatment plants, airports, subways, sewage treatment plants, pulp and paper industries, parking garages, car washes, fish plants, marinas, agricultural, dairy industry, hogs industry, cattle industry, chicken industry etc, bridges and tunnels, food processing plants, steel mills, mines.