The identification method of high quality PE water supply pipe and low quality PE pipe
PE pipe is made of polyethylene, mostly black. It is difficult to identify the quality only from the appearance. What kind of PE pipe is of good quality and what kind of pipe is of low quality? How to distinguish the quality of PE pipe? Is the poor pipe not conducive to the safety of drinking water? Let's take a look at what Yuhong industry summarized for you;
With the increasing demand for PE pipes, there are more PE pipes in the market. This kind of pipe is greatly lower in corrosion resistance, toughness strength and service life. PE pipes are mostly used for water supply pipes, collectively referred to as PE water supply pipes. For some key water conservancy projects or municipal water supply projects, PE water supply pipes are buried underground pipes. Once low-quality PE pipes are used, it will bring great hidden danger to people's future production and life. Therefore, it is very important to learn to identify the quality of PE pipes.
(1) appearance of PE pipe:
The high-quality tube is smooth in appearance and free of bubble, depression, impurity and other defects.
Low quality: rough internal and external surfaces, with bubbles, pockmarks and obvious depressions.
(2) pipe welded junction
Welded joint is also called welded joint. Qualified welded joint shall be smooth and symmetrical. High quality PE pipe welded joint: the whole circumference pipe with flanging shall not be less than the minimum flanging depth and the width of staggered edge. The flanging near the weld joint of PE pipe shall not be more than 10% of the wall thickness of the pipe, and the flanging shall be flat and smooth.
Low quality PE pipe: after flanging, there will be a lot of holes on the surface, and flanging is short.
High quality PE pipe: no smell.
Low quality: pungent smell.
(4) milling strip of PE pipe
High quality PE pipe: bright oil, flat, repeatedly folded and not easy to break.
Low quality: darker color, easy to break.
(5) elongation at break (refer to PE pipe inspection report)
High quality pipe: the elongation at break is the ratio of the length of the sample to the original length when drawing. High quality PE pipe is not broken 3.5 times. The higher the elongation at break, the better the flexibility and performance of the product.
Low quality: easy to break, poor toughness.
(6) combustion observation PE tube flame
PE pipe is made of polyethylene. The flame of high-quality PE pipe is blue after combustion.
Low quality: a large amount of black smoke is produced after combustion, which may be mixed with a large number of recycled materials.
Hangzhou Kangmei plastic & Chemical Co., Ltd. focuses on PE pipe manufacturers. Its products include PE pipe, PE water supply pipe, plastic lined steel pipe, siphon drainage pipe, inner rib reinforced polyethylene spiral corrugated pipe, HDPE plastic steel winding pipe, steel mesh skeleton composite pipe, 304 stainless steel pipe, PP ultra quiet drainage pipe, HDPE winding pipe, PERT pipe, etc