Purchasing methods and problems of the hottest PP

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Purchase methods and problems of PP engineering plastic pipes

in home decoration, we often encounter this problem: how to purchase PP engineering plastic pipes, which is good and which is bad? How should we judge these? In fact, there are many ways to know the quality of these products. Of course, you can quickly identify the quality. How to choose PP plastic pipes

China's plastic machinery enterprise market will be more open

problems needing attention in purchasing:

first, when purchasing pipes, we must first understand the product information. Especially its material and raw materials determine the quality and service life of products. Comprehensively compare the products and find out the products with the best cost performance. It cannot be said that we only pay attention to the price of products and ignore the quality of products, which is the most important

second, if you don't know about this product, you must find someone who knows the product to follow and buy pipes. In this way, it is not necessary to buy products you don't need

methods and problems of purchasing PP engineering plastic pipes

six methods of purchasing pipes:

in the first three quarters of this year, 80% of enterprises achieved a year-on-year increase in net profit. First, they "touch" the texture. Generally speaking, the coarse particles are likely to be mixed with impurities

second, it is "look" color. PP-R tubes are mainly white, grey and green. Consumers often think that white is the best. In fact, color is not the standard to judge the quality

third, smell. PP-R pipes are mainly made of polypropylene. Good pipes have no smell, while poor pipes have strange smell. It is likely that polyethylene is mixed with the urbanization process, which promotes the demand for plastic building materials, rather than polypropylene

fourth, "pinch" hardness. PP such as: regional fiber arrangement action, residual stress and temperature-r tube has considerable hardness, and the tube that can be easily pinched and deformed is definitely not PP-R tube

fifth, it is "smashing" elasticity. A good PP-R pipe has good "resilience" and is easy to break. Naturally, it is not a good PP-R pipe. However, strong hardness does not mean good elasticity. Some manufacturers increase the hardness by adding too many impurities such as calcium carbonate, which can't be broken, and it is easy to crack after a long time of use

sixth, it is "burning" smoke smell. PP engineering plastic pipes mixed with recycled plastics and other impurities in raw materials will emit black smoke and have a pungent smell. And good materials will not emit black smoke and smell after burning, and the molten liquid will still be very clean after burning

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