The most commonly used material for sewage pipes

  1. Plastic pipes and fittings, rigid polyvinyl chloride pipe (UPVC), UPVC pipe is the most widely used plastic pipe at home and abroad. UPVC tube has high impact resistance and chemical resistance.

UPVC is also called PVCU, usually known as hard PVC, it is vinyl chloride monomer polymerization and made of amorphous thermoplastic resin with certain additives (such as stabilizer, lubricant, filler, etc.) composition.

The melt viscosity of UPVC is high and the fluidity is poor. Even if the injection pressure and melt temperature are increased, the fluidity will not change much. In addition, the forming temperature of resin is very close to the thermal decomposition temperature, the temperature range of molding can be very narrow, it is a kind of difficult to form the material.

2.PVC pipe drainage pipe

PVC pipe drain pipe is made of sanitary grade polyvinyl chloride (PVC) resin as the main raw material, adding an appropriate amount of stabilizer, lubricant, filler, color enhancer and so on through the plastic extruder extrusion molding and injection molding machine injection molding, through cooling, curing, shaping, inspection, packaging and other processes to complete the production of pipes and fittings.

  1. High density polyethylene (HDPE) double wall corrugated pipe is a new type of pipe with annular structure outer wall and smooth inner wall. It was first developed successfully in Germany in the early 1980s. After more than ten years of development and improvement, has developed from a single variety to a complete product series. At present in the production process and the use of technology has been very mature. Because of its excellent performance and relative economic cost, it has been greatly promoted and applied in Europe and the United States and other developed countries.
  2. PP winding pipe

PP winding pipe is a plastic pipe using winding forming process, with light weight, strong stiffness, high flexibility, low temperature resistance and corrosion resistance and other advantages, can effectively make up for the shortcomings of three traditional materials, can be widely used in urban drainage, sewage and industrial water transportation fields.

Through the introduction of production equipment and processing technology, Shanghai Yada Pipeline Company of Lingyun Group successfully produced 3.5 meters of large-diameter PP (polypropylene) winding pipe in Haining factory. Feng Haoyu, deputy general manager of Lingyun Group, said that this will play a decisive role in urban flood control during the rainy season.

It is understood that the pipes traditionally used in urban drainage and sewage systems are made of cement, PE (polyethylene), glass steel and other materials, but there are poor rigidity, poor connection, easy to leak, easy to collapse and other problems. If you want to solve the problem of urban drainage and sewage obstruction, relying on three traditional materials can not be completely solved

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