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Uponor pipe Ultra Rib 2® is a gravity sewer system. The pipes are used as sewer and storm water pipes in various kinds of applications like municipal, transport, commercial and residential. Ultra Rib 2® is a ribbed and massive non-pressure pipe with injection moulded in-line socket. The material is polypropylene. Pipes are available from outer diameter 200mm up to diameter 560mm. Outer layer of the pipe is red brown and inner layer is white for easier inspection. The pipe has an injection moulded in-line socket, which is a solid part of the pipe and is produced on extrusion production line. The in-line socket reduces the number of joints needed by 50%. Ultra Rib 2® pipes are extremely tight, safe and strong. Socket has perfect shape and tolerances. Pipe cavity can be filled well-graded soil with up to 60mm particle size.