Klem PPR-røret har betydelig hardhet, og det kan lett klemmes inn i et deformert rør, som definitivt ikke er et PPR-rør.
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.
Lukt lukten. Hovedmaterialet til PPR-røret er polypropylen. Gode rør har ingen lukt, og dårlige har en merkelig lukt. Det er sannsynligvis blandet med polyetylen i stedet for polypropylen.
Burn It er veldig intuitivt og veldig nyttig. PPR-rør blandet med resirkulert plast og andre urenheter i råvarene vil avgi svart røyk og ha en stikkende lukt; gode materialer vil ikke avgi svart røyk og lukt etter brenning, og den smeltede væsken vil fortsatt være veldig ren etter brenning.
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.