Some manufacturers of PE pipes with the same specifications and models in the market produce PE pipes with very smooth inner and outer walls,but some produce PE pipes with relatively rough inner and outer walls.So,what is the reason for such a large difference in the inner and outer walls of PE pipes with the same specifications and models?Below,PE pipe manufacturers will analyze the specific reasons for everyone:
1、The problem with the formula of PE pipe raw materials:Nowadays,many small PE manufacturers,in pursuit of profit,irresponsibly add recycled materials,which are called recycled materials.The inner and outer walls of PE pipes with excessive recycled materials will not be smooth.
2、Production process issues:Excluding the above two points,if there are still problems,it can only be due to the production process of the PE manufacturer.There are many problems that affect the smoothness of the inner and outer walls of the pipe during the production process:
1.Process temperature:The process temperature can be adjusted by lowering the cooling water temperature,,The suitable cooling water temperature for PE pipes is 20-25℃;
2.Check the waterway for blockages or insufficient water pressure;Check whether the heating coils such as the barrel and head of the machine are damaged;

3. Adjust the inlet flow rate of the sizing sleeve; Consult the raw material supplier for the parameters of this batch of raw materials; Check the temperature of the mold core. If it is higher than the temperature of the mouth mold section, lower the temperature of the core; Clean the mold.
4. Check whether the heating coils such as the barrel and head of the machine are damaged; Adjust the inlet flow rate of the sizing sleeve;
3、 The problem with the PE pipe production line: Even with a new material ratio, the production line is old and the pipes produced are not satisfactory.
In summary, there are many reasons for the roughness of the inner and outer walls of PE pipes. Therefore, when purchasing PE pipes, we should choose large manufacturers with quality assurance. The pipes produced by such manufacturers at least do not have to worry about quality.