Contact with wire and cable people more or less know that there is a national standard line and non-standard line in the cable industry, many by the non-standard line caused by the tragic fire too numerous, it is not only the problem in the wire and cable industry, it is closely related to people's lives and property, today and you talk about the difference between non-standard wire and national standard wire. Non-standard wire: cables and wires for specific purposes that do not belong to the specifications and performance specified in national standards are generally manifested in four aspects: poor insulation layer performance, unqualified core material, insufficient cross-sectional area, and substandard length.

National standard wire: wire produced in full accordance with international standards. General household, common wires are standard specifications of the performance of the national standard wires.

How to distinguish the "national standard" and "non-standard" of wire and cable?

A look: to see whether there is a quality system certificate; See whether the certificate is standard; See whether there is a factory name, factory address, inspection seal, production date; See if the wire is printed with trademarks, specifications, voltage, etc. Also look at the cross section of the wire copper core, excellent copper color bright, soft color, otherwise it is defective.

Second test: It is advisable to bend a wire head repeatedly by hand, and those with soft feel, good fatigue strength, large plastic or rubber feel elasticity and no cracks on the wire insulator are excellent products.

Three weighing: good quality wire, generally within the specified weight range. For example, the commonly used plastic insulated single strand copper core wire with a cross-sectional area of 1.5 square meters has a weight of 1.8-1.9kg per 100m; 2.5 square plastic insulated single strand copper core wire, weight of 3 ~ 3.1kg per 100m; 4 square plastic insulated single strand copper core wire, weight of 4.4 ~ 4.6kg per 100m. Poor quality wire weight is insufficient, either the length is not enough, or the wire copper core impurities are too much.

Four prices: Because of the low production cost of fake and shoddy wires, vendors often sell at low prices under the guise of cheap and fine quality, so that people are fooled. The price of non-standard cable products is more than 20% lower than the normal market price.

Five look at the conductor: qualified copper core wire copper core should be purple, shiny, soft. The shoddy copper core wire is purplish black, yellow or white, many impurities, poor toughness, poor mechanical strength, a little force will break, and the wire is often broken. When checking, you just peel off one end of the wire, and then use a piece of white paper to rub it slightly on the copper core, if there is black material on the white paper, it means that there are more impurities in the copper core, which can be identified as non-standard wire and cable.

Six quality testing: In the case of differences in cable quality, it can be sent to a third-party testing institution for testing. Based on whether the authoritative test report is qualified.

There is also a set of non-standard cables, in addition to quality problems, in the law has constituted infringement, we must strictly eliminate. Choosing a national standard cable is not only responsible for yourself, responsible for consumers, but also the protection of personal safety.

Qingdao Tianxing Cable Co., Ltd. focuses on the production of customized wire and cable manufacturers, main: fire wire and cable, power cable, control cable and other products, exported to more than 40 countries and regions around the world, the annual production capacity of 1 billion yuan. 6000 square meters of storage, standing hundreds of millions of inventory, order demand for rapid distribution and delivery, large prices more favorable. Hotline: 16678668098