Corrugated pipes in non-pressure communications: properties, installation, quality selection

Pipes made of modified polymers have long been used in stormwater drainage systems and for sewage systems. These materials are very resistant to chemicals, impacts, abrasion. One of the types of synthetic pipes is corrugated products, flexible and easy to install.

Useful properties of corrugated pipes

Double corrugated pipes for sewerage are made of dielectric polyethylene (PE-80, PE-63), polyvinyl chloride (PVC) and polypropylene (PP). The edges of the products are rigid enough to withstand ground load at a depth of up to 20m. High flexibility does not require the purchase of additional fittings for rotation. The service life of such a pipe is about fifty years. It is almost not clogged: the smooth inner surface prevents the formation of dirty plaque. Installation is done manually, without special equipment.

Connection Features

Installation of polymer pipes should be carried out during the warm period, at t15 ° C. After the technical inspection, lay out the elements along the trench side, orienting the sockets opposite from the slope.

The first method (for private construction) is bell-shaped. Clean the expansion and smooth tip, place the rubber seal ring in the second groove on the corrugation. The profile of the ring should be directed opposite from the line of approach to the bell. Fittings (coupling, flange) are used only for connecting corrugated products with metal or asbestos-cement parts.

The second method (according to GOST) is butt. It requires welding work with special devices for polyethylene. Preheat the ends of the pipes until the material begins to melt. Select the welding mode according to the thickness and diameter of the parts. Connect them by applying the right pressure. Allow the nodes to cool down to form a monolithic joint.

The third method is coupling. The sealing ring of the fitting is placed in the groove of the corrugation, taking into account the diameter of the pipe: up to 250 mm – in the second groove, over 250 – in the initial one.

Polypropylene pipes for drain

PP-outdoor sewerage complexes are among the leaders in quality indicators. The main one is a significant circumferential rigidity (8 kN per 2m) and a lower weight relative to PVC. The systems undergo thorough control in production, and the pipe material is 100% recyclable. The products are marked for ease of installation with centimeter scales. Double-layered, high patency, as well as internal smoothness ensure virtually silent operation of the pipeline. casino online stranieri