Coating cables with fireproof coatings is like draping these “lifelines” of electricity with a protective armor less than a millimeter thick. This microscopic line of defense received a technological upgrade in 2025: the newly released national mandatory standard GB 28374-2025 “Fire-retardant Coatings for Cables” will be implemented in June 2026, providing a stronger barrier for […]
1. Preparation before selection: clarify the core demand parameters The first step in purchasing cables is not to look at the product, but to sort out your own needs. Just like a doctor needs to diagnose a condition before prescribing, the three core parameters of cable selection need to be clear: Electrical parameters are the foundation […]
1 Differences in conductivity and fire risks The starting point of electrical fires is often hidden in invisible resistance. The resistivity of copper is only 1.678 μΩ·cm, while the resistivity of aluminum is as high as 2.82 μΩ·cm, which is about 68% higher than copper. This difference in physical properties directly determines the heat generated by […]
1. Material Revolution: Molecular Breakthrough of Insulation Layer and Conductor The core bottleneck of the transmission performance of wires and cables lies in dielectric loss and conductor impedance, and material innovation is solving this problem at the molecular level. Foaming insulation technology has become a key path to increase the rate. The patent of Changfei Optical […]
1. “Urban powder keg”: old lines become the source of fire The fuse of electrical fire is buried deep in the walls of buildings. When the insulation layer of the wire ages and breaks, the metal conductor is exposed like a sharp blade. Data shows that short circuits account for 73.7% of the causes of […]
1. Blood and tears warning: non-standard cables are invisible fire bombs Statistics from the Ministry of Emergency Management show that cable problems have become the primary cause of fire. In the past ten years, major fire accidents caused by cables in the country accounted for more than 50% of the total number of fires, of which […]
1. Production process advantages: a natural choice for manufacturing efficiency The manufacturing of wires and cables is a high-speed and continuous industrial process, where the round design demonstrates unparalleled production advantages. From conductor drawing to multi-layer insulation extrusion, round dies are technically the easiest to achieve and the lowest cost. In the wire drawing process, […]
1. The invisible threat of traditional cables, the fatal cost behind burning The insulation layer of traditional cables is mostly made of polyvinyl chloride (PVC), and its flame retardancy depends on halogen additives. Once a fire breaks out, These halogen-containing materials will release toxic gases such as hydrogen chloride and dioxins and produce a lot of black […]
1. Structural cornerstone: exquisite design ensures efficient transmission of electric energy Medium-voltage cables are not simply wrapped wires, but are precision-coordinated engineering systems. The core conductors are generally made of high-purity annealed copper or specific aluminum alloys. Copper is the first choice for its excellent conductivity (international annealed copper standard IACS 100%), while aluminum alloys […]
Global market pattern: dual expansion of scale and power The oxygen-free copper market is expanding at an astonishing rate. The global market size reached $20.2 billion in 2023 and is expected to grow to $26 billion by 2028, with a stable annual compound growth rate of about 5.3%. The core driving force of this growth comes […]