With the development of the industry, the demand for wires and cables is increasing. Many manufacturers have seen business opportunities. This has led to more and more wire and cable manufacturers and more and more complete types. But how do we choose high-quality wires and cables? Or how do we distinguish whether wires and cables are "national standard" or "non-standard". Coim teaches you five tips:

one look

It depends on whether the wire and cable product has a quality system certification, whether the certificate is standardized, whether there is a factory name, site, inspection stamp, and production date, and whether there are trademarks, specifications, voltages, etc. printed on the wires. It also depends on the cross-section of the copper core of the wire. The high-quality copper is bright in color and soft in color, otherwise it is inferior.

Second, try

A wire head can be repeatedly bent by hand. Anything with a soft hand feel, good fatigue resistance, plastic or rubber hand feeling and elasticity, and no cracks on the wire insulator, is a premium product.

Three, weighing

Good quality wire and cable, generally the weight per 100m is within the specified weight range. For example, the commonly used plastic insulated single-strand copper core wire with a cross-sectional area of 1.5mm2 has a weight of 1.8-1.9kg per 100m; a 2.5mm2 plastic insulated single-strand copper core wire has a weight of 3-3.1kg per 100m; 4.0mm2 of plastic Insulated single-strand copper core wire, weighing 4.4-4.6kg per 100m, etc. Poor quality wires have insufficient weight, either the length is insufficient, or the copper core of the wire is too impurity.

Fourth, compare the price

Because of the low production cost of counterfeit and shoddy wires, vendors often sell them at low prices under the guise of low prices and good quality when selling, which makes people fooled. Therefore, when making a purchase, be careful not to dazzle the merchant's advertised "good quality and low price", and ultimately be deceived.

Five, look at the copper

The copper core of the qualified copper core wire should be purple-red, shiny, and soft to the touch. The fake and inferior copper core wires are purple-black, yellowish or white, with many impurities, poor mechanical strength, poor toughness, and will break with a little force, and there are often broken wires in the wires. During inspection, you only need to peel off one end of the wire, and then rub it on the copper core with a piece of white paper. If there is a black substance on the white paper, it means that there are more impurities in the copper core, which can be regarded as "non-standard". "Wire and Cable.