Flexible conduit pipes are usually made from HDPE or PVC material. HDPE and PVC electrical conduit pipes are handy items for electricians and other contractors to use for cable protection. Both HDPE and uPVC conduits are pliable. HDPE and PVC conduit pipes can be bent by hand for their corrugated design shape. The flexible hose electrical has a thin corrugated wall that is moisture-resistant and flame retardant. The wire pipe has a smooth inner surface to ensure easy installation of cables.