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 / Widened Cable Tray Specially 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 The hot-dip galvanized trough-type cable tray is made of Q235 carbon steel plates that are bent into a closed trough shape. It undergoes processing and forming first, and then is fully immersed in high-temperature molten zinc for hot-dip galvanizing for corrosion protection. Equipped with dedicated galvanized cover plates and connecting accessories, it serves as a cable laying carrier that combines strong corrosion resistance, electromagnetic shielding, dust prevention, and waterproofing. II. Core Production Process 1. Bridge Forming Process: Cutting of cold-rolled steel plates → CNC bending into U-shaped channels → Drilling (connection holes, lifting holes) → Complete set of accessories such as elbows, tees, reducers, and cover plates. 2. Hot-dip galvanizing anti-corrosion process: degreasing and degreasing → thorough rust removal by acid pickling → plating activation → soaking in molten zinc at 450~480℃ for 3~5min → centrifugal removal of excess zinc liquid → water cooling and passivation inspection. Coating structure: pure zinc outer layer + zinc-iron alloy intermediate layer + steel substrate, metallurgically bonded, without peeling or detachment; standard zinc layer thickness: thin plate ≤5mm≥65μm, thick plate ≥86μm, zinc layer adhesion ≥610g/㎡; appearance: silver gray, with visible natural zinc pattern on the surface, matte texture, different from the bright surface of electro-galvanized. III. Structural Composition and Conventional Specifications 1. Components: main body of the trough, matching galvanized cover plate, straight connecting piece, horizontal elbow, vertical upper and lower bends, tees, crosses, reducers, diaphragms, hangers, support arms, and a full set of hot-dip galvanized bolts. IV. Core Performance Advantages 1. Super Long-lasting Anti-corrosion (1) Dual-layer Protection: Physical Barrier + Sacrificial Anode Cathodic Protection. The zinc coating at the scratches and cuts on the bridge is preferentially corroded, protecting the steel from rusting; (2) Resistance to Salt Spray, Acid and Alkali, and Chloride Ion. It has a service life of 15 to 20 years in coastal, chemical, and underground high-humidity environments; (3) Compared to Electro-galvanizing (Cold Galvanizing): The zinc coating of electro-galvanizing is only 5 to 15μm thick, with a lifespan of 3 to 5 years, suitable only for indoor dry environments; the anti-corrosion capability of hot-dip galvanizing is 5 to 10 times that of electro-galvanizing. 2. Fully enclosed, with excellent electromagnetic shielding, no hollow full slot + cover plate sealing, it isolates external electromagnetic field interference, perfectly protects communication cables, optical fibers, computer control cables, and instrument thermocouple cables, ensuring the stability of weak electrical signals and preventing mutual interference between strong and weak electrical signals. 3. The enclosed structure, which is dustproof, waterproof, and resistant to mechanical damage, prevents the intrusion of dust, rainwater, oil stains, and corrosive gases, thus avoiding wear and aging of the cable sheath. The protection level can reach above IP40. 4. The structure is sturdy and has high load-bearing capacity. The integrated bending slot body can be reinforced with bottom ribs, providing resistance to bending and compression, making it less prone to deformation. It supports the laying of multiple layers of dense cables, with a uniform load capacity of up to 500kg/m for heavy-duty models, and excellent seismic performance. 5. Convenient installation and maintenance: Standardized cut-outs and a full set of galvanized connectors are provided, making on-site splicing and lifting simple; the galvanized surface is resistant to dirt accumulation, requiring almost no maintenance in the later stages. Ⅴ. Applicable Scenarios 1. Preferably use hot-dip galvanized trough-type cable trays; 2. Coastal docks, offshore wind power, coastal industrial areas (high salt spray corrosion); 3. Chemical, smelting, paper, and pharmaceutical factories (acid-base, corrosive gas workshops); 4. Outdoor open-air pipe racks, outdoor overhead cables in factory areas, underground utility tunnels, sewage treatment plants; 5. Weak current systems with high requirements for signal stability: central control rooms, DCS instrument lines, security fiber optics, communication base station wiring; 6. Damp basements, tunnels, non-explosion-proof areas underground in coal mines. VI. Advantages 1. Extremely long anti-corrosion lifespan, preferred choice for harsh corrosive environments; 2. Best shielding effect in the industry, dedicated for low-voltage applications; 3. Waterproof and dustproof, providing comprehensive protection for cables; 4. Strong adhesion of plating, with zinc not easily peeling off due to knocks; 5. High temperature and weather resistance, no powdering even after long-term outdoor use. VII. Construction Precautions 1. After on-site cutting and drilling, the incisions must be coated with zinc-rich repair paint to prevent rusting of the fracture surface; 2. All connecting bolts, brackets, and support arms must be equipped with hot-dip galvanized parts to prevent electrochemical corrosion of dissimilar metals; 3. Long-distance laying requires equipotential bonding to ensure overall grounding conductivity; 4. In chemical environments with strong acids and alkalis, spraying plastic for double-layer corrosion protection can be added on top of hot-dip galvanizing.