It may be more difficult to detect the full meter by hands and feet on the meter, because the customer generally does not have the device to actually measure the meter, and the same weight measurement method can be used to know whether the cable is full of meter. It is also a good way to have the rice mark printed on the factory, but it should be noted that there is no way to print the rice mark on a wire with a diameter of less than 5mm.

Zufang copper is a kind of precious metal. If you lose a little in the copper diameter, you can reduce a lot of raw material costs. In this case, you need to use a micrometer to measure the diameter of the copper wire. If you don't have a micrometer, the easier way is to weigh the entire roll of wire to see if it is much lighter than a high-quality cable. Or you can refer to the nominal weight given by the factory. The nominal weight given by some factories is too low, so naturally the product quality cannot be guaranteed.

How to distinguish the internal quality of Baotuquan wire and cable:

High-quality copper cables use high-purity oxygen-free copper, the copper core is bright in color, and the poor copper wire has a dull surface.

Extrusion machine

Plastic plastic uses high-quality virgin plastics, which have good bending performance and will not produce texture when bending the cable. Poor recycled plastics will have obvious textures after several bendings, and breaks after multiple bendings.

Cable equipment

In order to ensure the roundness of the cable, for multi-core cables, fillers are added to the core, and the thickness of the sheath is thicker. If the cable is not round, it means that there is very little filler. And the sheath is made thin.

Cable equipment

Multi-stranded copper wires are bundled during production to improve the tensile performance, roundness, electrical properties and tightness of the copper core with the insulating layer. However, because the bundles increase the amount of copper used, many The factory omitted this step. The way to distinguish is to cut the core of the cable to see if the copper wires inside are regularly twisted together.

For cables with braided copper mesh, the braid accounts for a large part of the cost of cable raw materials, and the coverage of the braid directly affects the electrical performance of the cable. At the same time, the tight braid can increase the strength of the cable and reduce the number of wires and cables. The electrical performance of the cable decreases when it is bent. Therefore, it is important to see whether the braided layer has a high coverage rate and a uniform and fine weave.