Dimensions (Width × Height, unit: mm): (1) Height 50 Series: 100×50, 150×50, 200×50, 300×50, 400×50 (2) Height 100 Series: 100×100, 150×100, 200×100, 300×100, 400×100, 500×100, 600×100, 800×100 (3) Height 150 Series: 200×150, 300×150, 400×150, 500×150, 600×150, 800×150, 1000×150 (4) Height 200 Series: 300×200, 400×200, 500×200, 600×200, 800×200, 1000×200, 1200×200 (5) Extra‑long Span / Special Widened Cable Tray for Power Plants: 1000×100, 1000×150, 1000×200, 1200×200 Plate Thickness (unit: mm): 1.0/1.2/1.5/2.0/2.5/3.0/3.5 Ⅰ. Product Definition: Fire-resistant molded cable trays (mainly divided into two categories: steel molded fire-resistant trough-type trays and SMC (Sheet Moulded Compound) glass fiber reinforced plastic molded fire-resistant trays) are formed through high-pressure integrated molding using molds, distinguishing them from traditional bent and welded trays. The steel-based trays are made of Q235B steel plates that undergo corrosion prevention treatment after molding, followed by a thick layer of intumescent fire-resistant coating. The glass fiber reinforced plastic trays are made of unsaturated polyester glass fiber SMC material, which is cured through high-temperature molding. They feature a fully enclosed trough structure, meeting fire-resistant continuous power supply and fire protection requirements. II. Production Process (I) Steel Fire-Proof Molded Cable Tray Process Molded Forming: The entire plate is fed into a dedicated mold for high-pressure integrated stamping, with the bottom plate, side plates, and reinforcing ribs formed in one go, without welding seams or thermal stress, with rounded corners and edges free of burrs, resulting in an overall strength increase of more than 30% compared to ordinary welded cable trays; Base Anti-Corrosion: First, hot-dip galvanizing/electro-galvanizing is applied as a primer for rust prevention; Fire-Proof Spray Coating: The exterior is coated with a high-build intumescent fire-resistant coating, with a dry film thickness of ≥1.2~1.5mm; it expands 5~10 times upon exposure to fire, forming a dense carbonized thermal insulation layer that isolates high temperatures and oxygen, preventing flames from penetrating the interior of the tray; supporting cover plates, bends, and tees undergo simultaneous molding + fire-proof spray coating, ensuring uniform fire resistance throughout the entire set. (II) SMC fiberglass reinforced plastic (FRP) molded fireproof cable tray process involves mixing fiberglass with flame-retardant unsaturated polyester resin, and then integrally molding and curing the mixture in a high-temperature and high-pressure mold to form a one-piece enclosed trough. The material itself is V-0 non-combustible, metal-free, naturally insulating and flame-retardant, and does not require additional fireproof coating. (Ⅲ) The complete set of supporting fire-resistant molded accessories are all treated with the same fire-resistant process, ensuring no shortcomings in fire resistance: straight-through components: fire-resistant connectors, galvanized fire-resistant bolts, grounding jumper wires (steel type); irregular components: horizontal 90°/45° bends, vertical up and down bends, tees, crosses, reducers; functional components: supporting fire-resistant cover plates, metal partition plates, fire-resistant sealing and blocking partitions; supports: fire-resistant support arms, fire-resistant columns, seismic braces. III. Comparison of Core Performance between Two Major Categories 1. Advantages of Steel Molded Fire-Resistant Cable Trays High fire resistance rating: standard fire resistance limits F60 (60min), F90 (90min), F120 (120min). During a fire, the tray remains intact and does not collapse, ensuring uninterrupted power supply for emergency fire fighting, monitoring, and evacuation lighting cables. The integrated molded seamless sealing provides superior fire and heat insulation sealing performance compared to ordinary welded fire-resistant cable trays, making it less likely for flames to penetrate through the welds. The metal material comes with built-in electromagnetic shielding, allowing for the co-laying of strong and weak electrical cables with the addition of a partition, making it suitable for computer rooms, central control rooms, and weak electrical signal lines. It has strong load-bearing capacity, with a uniformly distributed load of up to 400-500kg/m, allowing for the laying of high-voltage heavy-duty cables. The fire-resistant coating also provides moisture resistance and mild acid and alkali resistance, making it suitable for indoor, underground, and tunnel applications. 2. SMC fiberglass molded fireproof cable tray boasts several advantages: it is inherently non-combustible, achieving Class A flame retardancy; it prevents open flame drips, produces low smoke and low toxicity during combustion, and maintains stability under fire conditions; it features non-metallic insulation, eliminating eddy current loss and electromagnetic interference, allowing for co-laying of strong and weak electrical currents without isolation; it exhibits superior resistance to acid, alkali, salt spray, and sewage corrosion, and is explosion-proof and anti-static, making it the preferred choice for chemical industries, sewage treatment, and offshore platforms; it is lightweight, weighing 70% less than steel of the same specification, facilitating effortless lifting and requiring fewer supports; it is waterproof and moisture-resistant, eliminating the need for long-term maintenance in damp, high moisture environments underground. IV. General Overall Advantages 1. Molded Integrated Seamless Structure: Without welding seams, its fireproof, heat-insulating, and sealing properties are superior to traditional bent and welded fireproof cable trays, making it difficult for high-temperature smoke to penetrate into the interior during a fire; 2. Standardized prefabrication, with tightly fitting cover plates, ensures good consistency in the overall fireproof system, eliminating vulnerabilities due to mismatched fire resistance ratings of components; 3. Dustproof, rat-proof, and waterproof, with fully enclosed trays providing comprehensive protection for cables; 4. Prefabricated standard installation holes, ensuring high efficiency in splicing and hoisting construction; 5. Fire resistance performance can be supported by third-party fire inspection reports, meeting the rigid requirements for fire safety acceptance. Ⅴ. Applicable Scenarios: 1. Cable shafts in high-rise buildings, fire elevator machine rooms, and evacuation routes (with mandatory fire resistance requirements); 2. Subways, tunnels, underground utility tunnels, and civil air defense projects; 3. Fire main lines in hospitals, data centers, commercial complexes, high-speed rail stations, and airports; 4. Dedicated cables for distribution rooms, central control DCS machine rooms, fire alarms, and emergency lighting; 5. Indoor fireproof wiring in ordinary factories and underground garages. 6. Recommended scenarios for SMC fiberglass molded fireproof cable tray: 7. Chemical plants, oil refineries, electroplating workshops, and wastewater treatment plants (strong acid and alkali corrosion); 8. Coastal factory areas, offshore wind turbine platforms (high salt spray); 9. Explosion-proof workshops, hazardous chemical warehouses, and areas requiring anti-static insulation; 10. Highly humid underground pools, and cable laying in wastewater pipe trenches. VI. Key Points for Construction and Installation 1. For all cutting and drilling sections, steel models should be coated with fire-resistant repair paste, while fiberglass models should be sealed with flame-retardant resin to restore fire resistance integrity; 2. The entire set of trays, covers, connectors, and support arms must be uniformly equipped with fire-resistant accessories, and the mixed use of ordinary galvanized accessories is prohibited; 3. Steel long-distance installations should be equipped with grounding jumper wires to ensure equipotential conduction; fiberglass trays require separate grounding flat steel; 4. Strong and weak electrical cables laid in the same slot should be completely isolated by adding metal dividers; 5. Shafts, tunnels, and main branches of high-rise buildings should be equipped with seismic support hangers according to specifications; 6. Trays passing through walls and floor slabs should be equipped with fire-resistant sealing materials to form a complete fire partition.