do you know how to choose a good PVC pipe made in china ?

　　Generally speaking, there are some different kinds of the confirm methods can be used to confirm the quality of the PVC pipe made in china , but how much do you know ? if you do not know the right answer about the choose methods of the PVC pipes, just looking at the next article, as the professional PVC pipe made in china production manufacturer, we will give you a clear answer in the next article, then the next time, when you have to choose some PVC pipes, those knowledge can helps you to make a right decision.

　　The first confirm method, looking at the appearance and the surface of the PVC pipe made in china : generally speaking, if the quality of the PVC pipes are very high, then when we looking at the inner and the external wall of the PVC pipes, we will find that they are very smooth and flat, there also have no bubbles; you also need to make sure that there are no gaps and obvious mark lines or sags, etc, because those flaws can influenced the efficient working of the PVC pipe made in china , so you need to pay more attentions on those factors; the color of the PVC pipe made in china also need to be uniform without no difference;

　　The second confirm method, scanning at the explanatory memorandum of the PVC pipe made in china : generally speaking, the wall thickness difference between the same cross section wall should be equal or less than 14%, the retraction rate of the PVC pipe made in china in the lengthways should not beyond 5%.