Suspaudimas PPR vamzdis yra gana kietas, todėl jį galima lengvai suspausti į deformuotą vamzdelį, kuris tikrai nėra PPR vamzdis.
Touch Whether the texture is fine and the particles are uniform. At present, PPR tubes on the market mainly have several colors of white, gray and green. Generally, recycled plastics cannot be made into white, so consumers often think that white is the best. In fact, this view is rather one-sided. With the update and improvement of technology, color is not the standard for distinguishing the quality of PPR tubes. Whether the tube is good or bad, it seems that it can't solve the problem. If you touch it, the rough particles are likely to be mixed with other impurities.
Užuosti kvapą. Pagrindinė PPR vamzdžio medžiaga yra polipropilenas. Geri vamzdžiai neturi kvapo, o blogi - keistai. Tikėtina, kad jis bus maišomas su polietilenu, o ne su polipropilenu.
Burn Tai labai intuityvu ir labai naudinga. PPR vamzdžiai, sumaišyti su perdirbtu plastiku ir kitomis žaliavoje esančiomis priemaišomis, skleis juodus dūmus ir aitrų kvapą; geros medžiagos po degimo neskleis juodų dūmų ir kvapo, o išsilydęs skystis po degimo vis tiek bus labai švarus.
A good PPR tube has good "resilience", and it is not a good PPR tube if it is too easy to smash. However, strong hardness does not mean good elasticity. Consumers will have doubts about PPR tubes that cannot be broken. Because some unscrupulous manufacturers increase the hardness of pipes by adding too much calcium carbonate and other impurities, such pipes are prone to brittle cracks after a long time.