1. Take care of the coding on your body. By taking care of the spray code on your body, you can quickly determine whether the brand of water pipes are of high international quality. For standard pipeline products, there is usually complete coding information on each pipe, which can help consumers identify it. A good PPR pipeline includes not only the brand logo, the place of origin, but also the application environment and the certification standards of the world's authoritative organizations. According to the information on the pipeline, it is even possible to trace the production time, batch or even the production machine.
2. Take care of whether the body transmits light. Do a light transmission test for the tube through the LED light to check whether it is easy to breed bacteria. Light and oxygen are the two major elements for the survival of bacteria and algae. Therefore, if the pipe is transparent, it is easier to grow bacteria and algae ("green hair") in the pipe, which will seriously affect the sanitation and safety of living water; therefore, the same Under the environment, the poorer the light transmittance, the better the water pipe. According to this principle, we can easily use an LED lamp to test the light transmittance of the tube.
3. Smell the welding smell. High-quality pipes should be colorless and odorless when hot-melted. The welding of PPR pipes is connected by hot melt, making it a seamless whole. Poor quality PPR pipes will emit pungent odors and toxic substances when they are hot melted. In order to ensure the sanitation and safety of daily drinking water, the PPR pipes with excellent quality will not emit unpleasant odors that make people uncomfortable even when they are melted or even burned.
4. Look at whether the copper fittings have plating. Good PPR pipe fittings are not plated with nickel and chromium, and use anti-dezincification brass materials to ensure the safety of water quality. The thread parts of the PPR fittings are made of copper materials, and copper is easy to accelerate the aging of PPR materials, so many domestic brands will coat the brass with a layer of metal nickel or chromium for insulation. However, this practice will release metal elements and cause secondary pollution to the water, which was eliminated by the European standard 20 years ago. Good PPR pipes should be made of professional anti-dezincification brass materials without nickel and chromium plating. Compared with ordinary brass, it has higher corrosion resistance, and at the same time it is environmentally friendly and does not pollute the environment.
5. Look at the diameter of the accessories and the length of the thread. Good fittings have larger internal diameters and longer threads. If the internal diameter is larger, the resistance of the water flow in the pipeline will be small, no scale will form, and the water experience will be better. The longer the pitch of the thread is smaller, and it also makes the connection stronger.
