Some people will find that there are some pittings on the surface of the pipe when buying PE pipes, so they are worried about whether the quality of the pipes with pittings is not good, so the following Xiaobian will tell you why there are pittings on the surface of some pipes, and whether this pitting will affect the quality of the pipe.

1. It may be because the raw materials in the head and barrel of the equipment have oxidation and deterioration after long-term heating, so that some relatively large pitting or holes will be formed in the PE pipe when the foundation is based. Especially in some unqualified pipeline production, the phenomenon of adding reused materials will be more obvious, so when this situation occurs, it is necessary to better control the temperature during processing and the time of the material in the barrel also needs to be controlled, and the improvement effect is also more obvious after rapid cooling or regular cleaning.

2. In addition, when the moisture content in the material is relatively high, some bubbles are more likely to appear on the surface of the pipe. Then after shaping, some pitting will be formed on the surface, so we need to dry the raw materials to reduce the moisture content.

3. When the cooling water in the equipment setting sleeve is uneven, it will also lead to > pipesSome pitting appears on the surface. The main reason for this situation is that as the diameter of the pipe increases, the amount of water required for recooling is also larger, so it will be more difficult to form a complete water film. Therefore, when we encounter this situation again, it is necessary to properly adjust the water flow rate of the inlet pipe and the pores of the flow channel, and appropriately increase the water flow rate and ensure that the cooling water is evenly film-formed.