The uniform thickness of the thermal insulation layer is 25mm, double-layer cover plate is adopted for ventilation, and fireproof coating is sprayed inside. When the fireproof cable tray encounters fire, the coating expands. Straight cable tray shall be supplied in standard lengths of not less than 2m and not exceeding 3m. The fire prevention period requires a thickness of not less than 1mm, and the fire resistance limit needs to be greater than 30min, which is the standard for the fire protection effect of general cable fire retardant. Thickness standard cable tray thickness refers to the distance between the upper and lower sides of the cable tray plate, which refers to the thickness of the plate. All illustrations, descriptions and technical information included in this document are provided as indications and can cable trays are equivalent. The mechanical and electrical characteristics, tests, certifications, overall quality management, recommendations mentioned. Application: Apply the primer uniformly, ensuring the thickness meets the design specifications. They should provide excellent fire resistance and durability. They are widely used in chemical plants, building con-structions and residential life by virtue of its.