日本国产综合亚洲_日韩欧美综合在线观看_成人在线免费观看麻豆_国产黄片在线亚洲成人大片_国产黄色视频一区二区三区_欧美性爱中文字幕_日韩在线视频精品免费观看_娇妻玩4p被3个男子伺候_亚洲一级国产毛片_久久久无码精品亚洲

Problems to be paid attention to when purchasing pvc pipe production line

Date : 2021-04-15

At present, PVC pipe production lines for building drainage and random co-pe pipe production lines are mainly used in home decoration. Consumers should pay attention to the following points when choosing pvc pipe production line and pe pipe production line for building drainage:

(1) Pay attention to the appearance of the pipe. The pipe should be smooth, flat, free of bubbles, discoloration and other defects, with uniform color, no impurities, and uniform wall thickness.

(2) The pipes should have sufficient rigidity, especially drainage pipes, and they should not be deformed when they are pressed by hand.

(3) Pay attention to the pressure grade of the water supply pipes, and choose the pressure grade that meets the requirements of actual use. Generally speaking, hot water pipes should choose pipes with a pipe series S of less than 2.5, that is, the wall thickness of the pipe with an outer diameter of 20 should be 3.4mm or more, and the wall thickness of the pipe with an outer diameter of 25 should be 4.2mm or more.

(4) First choose products that implement the national standard. When purchasing pipes, consumers should pay attention to whether the pipes are marked to implement the national standard. If the implementation is an enterprise standard, they should pay attention.


Copyright ? Zhejiang Zhongjie Machinery Technology Co., Ltd.

Home

Tel

E-mail

Message