1, "touch" texture is delicate, whether the particles are uniform. At present, there are mainly white, gray and green colors on the market. Under normal circumstances, recycled plastics cannot be white, so consumers often think that white is good. In fact, this view is rather one-sided. With the update of technology, color is not the standard to distinguish the quality of PP pipe. The quality of the tube cannot solve the problem. Touch it, and the rough particles are likely to be mixed with other impurities.

1, "touch" texture is delicate, whether the particles are uniform. At present, there are mainly white, gray and green colors on the market. Under normal circumstances, recycled plastics cannot be white, so consumers often think that white is good. In fact, this view is rather one-sided. With the update of technology, color is not the standard to distinguish the quality of PP pipe. The quality of the tube cannot solve the problem. Touch it, and the rough particles are likely to be mixed with other impurities.
2, "smell" has no smell. The main material of PP pipe is polypropylene. Good pipes have no smell, while bad pipes have strange smell. It is quite possible to mix polyethylene instead of polypropylene.
3. "Pinch" PP pipe has considerable hardness, and it can be kneaded into a deformed pipe casually. It is definitely not a PP pipe.
4, "smashing" a good PP pipe, "resilience" is good, too easy to smash nature is not a good PP pipe. However, strong hardness does not mean good elasticity. Consumers will have doubts about PP pipes that cannot be broken. Because some unscrupulous manufacturers increase the hardness of the pipe by adding too much calcium carbonate and other impurities, such pipes are prone to embrittlement after a long time.
5, "burn" ignition a burn, very intuitive and very useful. PP pipes mixed with recycled plastics and other impurities in raw materials will emit black smoke and have a pungent smell; good materials will not emit black smoke and no smell after burning, and the molten liquid will still be clean after burning.
6, PP pipe feel soft, pseudo PP pipe feel smooth.
7, PP pipe landing sound is dull, pseudo PP pipe landing sound is crisp.