Niskata It-tubu PPR għandu ebusija konsiderevoli, u jista 'jinqabad faċilment f'tubu deformat, li żgur mhuwiex tubu PPR.
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.
Xomm ir-riħa. Il-materjal ewlieni tal-pajp PPR huwa polypropylene. Il-pajpijiet tajbin m'għandhomx riħa, u dawk ħżiena għandhom riħa stramba. Huwa probabbli li jkun imħallat ma 'polyethylene minflok polypropylene.
Ħruq Huwa intuwittiv ħafna u utli ħafna. Pajpijiet PPR mħallta ma 'plastik riċiklat u impuritajiet oħra fil-materja prima se jarmu duħħan iswed u jkollhom riħa qawwija; materjali tajbin mhux se jarmu duħħan iswed u riħa wara l-ħruq, u l-likwidu mdewweb xorta jkun nadif ħafna wara l-ħruq.
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.