The prospect of China's
aluminum tube market is very broad, which has also brought a bad atmosphere to the development of the entire market, in order to avoid consumer losses, today we will teach you four simple methods to identify genuine aluminum tubes and defective products.
I. Look
The identification was made through the observation and hand touch of the surface characters and inner and outer surfaces of aluminum tubes.
1. The surface words of genuine aluminum pipes are generally printed with imported jet code, and the writing is clear, and the general marks such as trademark identification, manufacturer, address and even telephone are clear and true; The surface words of fake and shoddy aluminum tubes are mostly printed by ordinary printing presses, the handwriting is fuzzy, and the manufacturers and logos are generally unknown or not marked.
2, genuine aluminum tube is made of high-quality raw materials, its process accuracy is high, the surface and inner layer feel smooth, smooth and no clutter; The shoddy aluminum-plastic pipe products are relatively poor due to jerry-cutting.
3. The wall thickness of the authentic aluminum-plastic pipe mouth and aluminum strip is uniform, the aluminum pipe is closely combined, and the quality and thickness of the pipe and aluminum strip can meet the relevant national standards; The fake and inferior products have large wall thickness deviation, thin aluminum sheet, and large gap at the aluminum tube overlap.
Second, roast
The real aluminum-plastic pipe is made of ultrasonic lap welding or hydrogen arc welding. Its interface is very tight, and the aluminum sheet will not fall off after the pipe is lit by open fire. And fake and shoddy aluminum-plastic pipes and other combined pipes because of its aluminum sheet is not welded, its interface is not tight, and the aluminum sheet will fall off after ignition.
Three. Scissors
The aluminum tube was cut into a band shape in spiral shape by pipe shear, and the aluminum tube layer and PE layer were removed by hand. The real aluminum-plastic pipe is a 5-layer composite structure, the aluminum layer and PE layer are closely bonded, and the aluminum tube layer and PE layer are not easily separated by hand. And shoddy products because of cutting corners, its aluminum layer and PE layer is not tight, easy to peel off.
Fourth, test
The use of small pressure pump to test the pressure resistance of aluminum pipe, real aluminum plastic pipe blasting pressure is high, generally can meet or exceed the requirements of the relevant national code; However, the internal blasting pressure of shoddy products is generally low or even low, which is difficult to meet the requirements of use.
