Is there a national standard for steel cable trays?

Steel cable trays have national standards. The national standard in China is GB/T 12706-2016, which specifies the terminology and definitions, product classification, materials, manufacturing processes, quality requirements, inspection methods, inspection rules, as well as requirements for marking, packaging, transportation, and storage of steel cable trays. According to this standard, steel bridge frames should be made of high-quality carbon structural steel or other steel with better performance. The plates should be made of materials with moderate thickness, smooth surface, uniform material, no cracks, no rust or other defects. At the same time, the production of cable trays should strictly follow the process requirements to ensure dimensional accuracy and straightness. In terms of quality requirements, steel bridge frames should undergo multiple inspections, including visual inspection, dimensional inspection, weight inspection, coating inspection, mechanical performance testing, and corrosion resistance testing. Among them, mechanical performance testing includes the inspection of indicators such as hardness, tensile strength, and yield strength. The corrosion resistance test includes multiple aspects such as salt spray test and corrosion resistance test. In terms of inspection rules, this standard specifies the requirements for factory inspection and type inspection. Factory inspection should include basic requirements such as appearance inspection, size inspection, and weight inspection, while type inspection should comprehensively inspect various performance indicators of the product to ensure that it meets relevant standard requirements. In short, there are national standards for steel cable trays, which provide clear regulations on materials, manufacturing processes, quality requirements, inspection methods, and other aspects of the product to ensure that the quality and performance of the product meet the requirements.