Zenith PVC Casing & Screen Pipes are Manufactured from special PVC compound having extra toughness and are Anti corrosive. PVC being an inert material most of the chemicals found in soil and water do not affect the casing and screen. Due to Continuous ribs permeability is increased by keeping gravel pack away from slot opening. Zenith PVC Casing & Screen Pipes are Used in water rising application in muddy wells and where water is available in gravel pack areas, Etc.