PVC-U Pipe for Drainage

UPVC drainage pipe, short for Unplasticized Polyvinyl Chloride drainage pipe, is made of polyvinyl chloride resin with the addition of stabilizers, lubricants and other additives, and is processed by extrusion molding. It is mainly used for draining sewage, rainwater and other waste water.

Product Features

• High Chemical Resistance: It has excellent resistance to acids, alkalis and other chemical substances, and is not easily corroded by the chemicals in the sewage, ensuring the long-term stability and durability of the pipeline.

• Good Mechanical Properties: The pipe has high tensile strength and compressive strength, and can withstand a certain external pressure and impact, reducing the risk of pipeline damage and leakage.

• Smooth Inner Wall: The inner wall of the UPVC drainage pipe is smooth, with a small roughness coefficient, which can reduce the resistance of fluid flow and improve the drainage efficiency.

• Light Weight and Easy Installation: The weight of UPVC pipes is much lighter than that of traditional cast iron pipes and concrete pipes, which is convenient for transportation, handling and installation, and can save labor costs and construction time.

• Good Noise Reduction Performance: It can effectively reduce the noise generated when the water flows in the pipeline, and provides a quiet environment.

• Long Service Life: With good weather resistance and corrosion resistance, UPVC drainage pipes have a long service life, generally up to 50 years or more under normal use conditions.

Production Process

The production of UPVC drainage pipes usually adopts the extrusion molding process. First, the polyvinyl chloride resin and various additives are mixed in a certain proportion in the mixer to make the material uniform. Then, the mixed material is fed into the extruder, heated and melted, and extruded through the die to form the pipe blank. Finally, the pipe blank is cooled, sized, cut and other processes to make the finished UPVC drainage pipe.

Product Specifications

The nominal outer diameter of UPVC drainage pipes generally ranges from 40mm to 630mm, and the wall thickness is determined according to different application requirements and pressure levels. The common standard lengths of pipes are 4m and 6m, and can also be customized according to customer requirements.

Connection Methods

• Solvent Welding: This method uses a special solvent glue to bond the connection parts of the pipe and the fitting. The solvent glue can dissolve the surface of the UPVC material, and after the solvent evaporates, the pipe and the fitting are firmly bonded together, forming a sealed connection.

• Rubber Ring Joint: For large-diameter UPVC drainage pipes, the rubber ring joint method is often used. The socket end of the pipe is provided with a groove, and the rubber ring is placed in the groove. When the pipe is inserted into the fitting, the rubber ring is compressed to form a sealed connection, which can adapt to a certain amount of pipe displacement and vibration.

Application Areas

• Building Drainage Systems: It is widely used in the drainage systems of residential, commercial and industrial buildings, such as the drainage of toilets, kitchens, balconies and roofs.

• Municipal Drainage Engineering: It is used for the construction of urban rainwater and sewage drainage pipelines, and can be laid underground or above ground.

• Industrial Drainage: It is suitable for draining industrial waste water and cooling water in factories, mines and other industrial enterprises.

• Agricultural Irrigation and Drainage: It can be used for agricultural irrigation and drainage systems, such as field drainage, greenhouse drainage and so on.