Unplasticized Polyvinyl Chloride: PVC pipe is produced without any softener and therefore has higher resistance and less friction with the material. This product is often used for various pipes and fittings, transfer of drinking water in areas with different topographic conditions, drainage and even sewage transfer. Low price, excellent mechanical properties, extraordinary resistance to chemicals are among the significant advantages of this unbreakable pipe that can attract the attention of any company.

Azar Barzin G. Sepahan Company, year in a land with an area of thousand square meters and infrastructure of square meters with the aim of producing all kinds of PVC pipes and fittings from size to mm, in order to be used in sewage and water supply, telecommunications, electricity and A building was built. This company produces pp (polypropylene) pipes and fittings from size to mm for construction, urban, industrial, sanitary water supply and central heating installations and the transfer of chemicals, acids and compressed air in its production line.

Vinoplastik Company is one of the well-known manufacturers of UPVC pressure and non-pressure hydraulic pipes in Iran, which offers its products in four areas: industrial towns, water and sewage companies, Jihad Keshavarzi and regional water companies. In recent years, Vinoplastik has been able to supply the pipes and fittings of many companies operating in these four areas, as well as bring good currency to the country.

() Because of the characteristics of the conical screw, the feeding section has a large diameter, and the heat transfer area and shear speed of the material are relatively large, which is conducive to the plasticization of the material. The screw diameter of the metering section is small, reducing the heat transfer area and the shear speed of the melt, so that the melt can be extruded at a lower temperature.

In order to determine the overall change in static pressure of liquids and fluids as they flow along a large tube, all three components of the Bernoulli equation must be considered separately and then combined. Changes in the height or slope of the pipe may cause a pressure drop. Similarly, a change in fluid velocity can increase the pressure and vice versa. The net effect of these currents depends on the relative magnitude of these changes.