Finolex offers a wide range of casing and ribbed screen pipes which are manufactured using a special PVC-U compound. This makes them ideal for transportation of hard, salty, sandy, or chemically aggressive water. This range of PVC-U plain casing and ribbed screen pipes are specially designed to ensure clean, clear water from bore well, whether shallow, medium or deep. CD (Deep Well Casing) Plain blue pipes & RDS (Ribbed Deepwell Screen) are manufactured as per IS:12818 caters to the varied requirements of bore-wells.Suitable for well depth between 250 to 450 meters.