How to distinguish the quality of ppr pipe

1. Touch, whether the texture is delicate, the market has three colors of white, gray, and green, and the recycled materials cannot make white tubes. From the appearance of the tube, it is found that it is smooth, dark texture, yellowing, stains, etc., inner wall, smoothness, feel, dark spots Wait. 2. Smell, smell or not. The main material of PPR pipe is polypropylene. Good pipes are odorless, and bad ones have strange smells. It is very likely that they are mixed with polyethylene. 3. Smashing, good tube resilience is good, too easy to smash is naturally not a good tube, but too hard is to add too much calcium carbonate and other impurities, and to increase the hardness of the pipe, the hardness in the early stage is better, and it will be brittle after a long time. And frost cracking. 4. Burning, good ingredients, no pungent odor, no black smoke, and the molten liquid is very clean.