Shiva Polytubes Pvt. Ltd. Manufactures Casing Pipes with Two Sides Rib. Shiva Polytubes Pvt. Ltd. Has obtained ISO 9001 certifications. Casing Pipes with Two Sides Rib is available in the form of 4.5" [113 mm] diameter casing pipes. Casing Pipes with Two Sides Rib is available in different size ranges. This pipe is used in submersibles pump and jet pump simultaneously in a single bore, as the jet pump is operated manually during power cut and submersible pump is operated with power.