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Suzhou Polytime Machinery Co., Ltd.
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  5. Polytime - OPVC Pipe Extrusion Machine

Polytime - OPVC Pipe Extrusion Machine

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The OPVC Pipe Extrusion Machine is designed to create pipes through a bidirectional stretching process, significantly enhancing the mechanical properties of standard PVC-U pipes. The stretching aligns the PVC molecular chains in a biaxial manner, improving strength, impact resistance, and toughness, especially at low temperatures down to -20°C. This process results in pipes that are not only more durable but also lighter and more cost-effective due to reduced material usage, with the ability to save approximately 47% of raw materials. The thinner walls increase the pipe's water conveying efficiency, reducing transportation and installation costs. Supported by various international standards such as ISO 16422 and ANSI/AWWA C909-02, the OPVC pipes outperform traditional materials including cast iron and HDPE, offering superior fatigue resistance and improved performance in demanding applications. Each component of the machine, from the twin screw extruder to the infrared heating system, is meticulously engineered for reliability and precision.
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The OPVC pipe is a pipe produced by the bidirectional stretching process.The raw material formulation of the pipe is bascally the same as that of theordinary PVC-U pipe. The perfomance of the pipe produced by this proces is greatly improved compared with PVC-U pipe,the impact resitance of thepipe is improved by about 4 times,the toughness is maintained at minus -20 ” C, and the wall hickness of PVC-U pipe is reduced by alf under thesame pressure. About 47% of the raw material is saved, and a thinner wall thickness means that the pipes water conveying capacity is stronger, the pipes are lighter and more convenient to install, and the transportation cost is lower.

  • By stretching the PVC-U pipe produced by extrusion in both axial and radial directions, the long PVC molecular chains in the pipe are arranged in an orderly biaxial direction, so that the strength, toughness and resistance of the PVC pipe can be improved. The performance of punching, fatigue resistance, and low temperature resistance has been greatly improved. The performance of the new pipe material (PVC-O) obtained by this process greatly exceeds that of the ordinary PVC-U pipe.
  • Studies have shown that compared with PVC-U pipes, PVC-O pipes can greatly save raw material resources, reduce costs, improve the overall performance of the pipes, and lower the cost of pipe construction and installation.

The chart lists 4 different types of pipes (under 400mm diameter), namely cast iron pipes, HDPE pipes, PVC-U pipes and PVC-O 400 grade pipes. It can be seen from the graph data that the raw material cost of cast iron pipes and HDPE pipes is the highest, which is basically the same. The unit weight of the cast iron pipe K9 is the largest, which is more than 6 times that of the PVC-O pipe, which means that the transportation, construction and installation are extremely inconvenient. PVC-O pipes have the best data, the lowest raw material cost, the lightest weight, and the same tonnage of raw materials can produce longer pipes.