The sampling qualification rate of wire and cable

2022-07-29
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AQSIQ: the qualified rate of physical quality sampling of wire and cable products is 93.7%

the AQSIQ organized a national supervision and random inspection on the quality of wire and cable products, and a total of 120 products produced by 120 enterprises in 15 provinces and municipalities directly under the central government (not involving export products, in order to reduce the occurrence of errors), and the qualified rate of physical quality sampling of products is 93.7%

the General Administration of quality supervision, inspection and Quarantine of the people's Republic of China (AQSIQ) reported on September 16 that in order to ensure the product quality of construction engineering materials, safeguard the legitimate rights and interests of consumers, and promote the healthy development of the wire and cable industry, AQSIQ organized national supervision and random inspection on the product quality of wires and cables. A total of 15 provinces, including Tianjin, Hebei, Inner Mongolia, Shanxi, Heilongjiang, Jilin, Liaoning, Jiangsu, Zhejiang, Anhui, Sichuan, Guangdong, Henan, Shandong and Chongqing, were selected For 120 kinds of products (not involving export products) produced by 120 enterprises directly under the central government, the sampling qualification rate of physical product quality is 93.7%

main quality problems found in the spot check:

1. The insulation or sheath weight loss items of some products are unqualified. Weight loss is the thermal stability index of cable insulation and sheath during long-term operation. In the spot check, some products were found to be unqualified in weight loss, and the insulation and sheath were prone to aging and deterioration

2. The mechanical properties of some products are unqualified. The standard puts forward different requirements for the mechanical properties of insulation and sheath of different products. In the spot check, some products failed in mechanical performance. According to the prediction of Platts energy analyst, the sheath or insulation is easy to break during the laying and other stress processes, resulting in short circuit, leakage and discharge

3. The thermal extension items of some products are unqualified. The standard stipulates that the elongation of cable insulation under thermal extension load shall not exceed 175%, and the permanent elongation shall not exceed 15%. During the spot check, some products' thermal extension appeared fusing, which was easy to cause short circuit accident under high temperature

in view of the main quality problems found in the random inspection, the AQSIQ has instructed the local quality and technical supervision departments to deal with the enterprises whose product quality is unqualified in the random inspection in strict accordance with the provisions of the product quality law and other relevant laws and regulations, and rectify them within a time limit. At the same time, enterprises with good quality in the spot check should be given more publicity to guide consumption. The General Administration of quality supervision, inspection and Quarantine of the people's Republic of China will continue to track and spot check the product quality of wires and cables that should not be confused with laser additive manufacturing, so as to improve the overall quality level of the wire and cable industry

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