Quality identification of wires and cables
How to identify the pros and cons when buying wires
The state has explicitly ordered the use of copper wires in newly built houses. But the same copper wire, there are also inferior copper wires, whose copper core is made of recycled copper, which contains many impurities. Some low-quality copper wires are not even as conductive as iron wires, which can easily cause electrical accidents. There are many varieties, specifications, and prices of wires on the market, making it very difficult for consumers to choose. Just in terms of the price of two copper core wires of 2.5 square millimeters and 4 square millimeters commonly used in home decoration, a coil of the same specification can have a price difference of 20% to 30% because of different manufacturers. As for the quality and length, it is even more difficult for consumers to judge.
According to industry insiders: the huge price difference of wires is caused by the same used in the production process. The main raw materials for the production of wires are electrolytic copper, insulating materials and sheathing materials. The electrolytic copper in the raw material market is about 50,000 yuan per ton, while the recovered miscellaneous copper is only about 40,000 yuan per ton; The price of high-quality products of insulating materials and sheathing materials is between 8,000 and 10,000 yuan per ton, while the price of defective products is only between 4,000 and 5,000 yuan per ton. In addition, insufficient length and insufficient glue content in insulators are also important reasons for price differences. The length of each reel is 100 meters for high-quality products, while only 90 meters for inferior products; The gel content of the insulator superior product accounted for 35% to 40%, and the gel content of only 15% of defective goods. By comparison, it is not difficult for consumers to see that the difference in the selling price of finished wires is caused by the difference in materials.
The state has explicitly ordered the use of copper wires in newly built houses. But the same copper wire, there are also inferior copper wires, whose copper core is made of recycled copper, which contains many impurities. Some low-quality copper wires are not even as conductive as iron wires, which can easily cause electrical accidents. There are many varieties, specifications, and prices of wires on the market, making it very difficult for consumers to choose. Just in terms of the price of two copper core wires of 2.5 square millimeters and 4 square millimeters commonly used in home decoration, a coil of the same specification can have a price difference of 20% to 30% because of different manufacturers. As for the quality and length, it is even more difficult for consumers to judge.
According to industry insiders: the huge price difference of wires is caused by the same used in the production process. The main raw materials for the production of wires are electrolytic copper, insulating materials and sheathing materials. The electrolytic copper in the raw material market is about 50,000 yuan per ton, while the recovered miscellaneous copper is only about 40,000 yuan per ton; The price of high-quality products of insulating materials and sheathing materials is between 8,000 and 10,000 yuan per ton, while the price of defective products is only between 4,000 and 5,000 yuan per ton. In addition, insufficient length and insufficient glue content in insulators are also important reasons for price differences. The length of each reel is 100 meters for high-quality products, while only 90 meters for inferior products; The gel content of the insulator superior product accounted for 35% to 40%, and the gel content of only 15% of defective goods. By comparison, it is not difficult for consumers to see that the difference in the selling price of finished wires is caused by the difference in materials.
