What are the factors of good quality HDPE Pipes
HDPE water pipe is the most common used pipe for construction. Many projects and shopping malls use HDPE pipes sequentially. With the rapid development of technology, HDPE pipes have been widely used for many other industries such as urban underground pipe laying, ground source heat pumps, landfill, irrigation and so on. Therefore, the quality of HDPE pipe is the focus of manufacturers and users. Do you know how to buy good quality HDPE pipes? There are many factors of HDPE pipe processing such as raw material selection, temperature, screw speed, compressed air, towing speed and traction cooling.
1. Temperature is the main factor that affect HDPE pipe production. If the temperature is too low, plastify is not good. If the temperature is too high, the material will decompose.
2. Screw speed affect the pipe quality. Speed increases, the amount of extrusion increase, the material is subjected to shearing force. But in the short residence time of the screw, higher frictional heat will make rough inner wall and pipe strength will be reduced.
3. Compressed air maintain the pipe shape and keep it at a certain roundness.
4. If cooling can not reach the requirement, the pipe can not be stereotyped. The best combination is cooled by air cooling, cooling water temperature should be maintained at around 15 degrees.
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