Product parameters
| Product Name: | Fire-Resistant Cable Ladder |
| Type: | cable ladder/ladder-type cable tray/cable runway/wire cable ladder/cable support ladder/fire rated cable ladder/vertical cable ladder/ventilated trough cable tray/tray ladder/straight cable ladder |
| Material: | Fire-Resistant Steel |
| Surface Treatment: | Epoxy Spray Coating/Galvanized sheet |
Product Size
| Width: | 50-1200mm |
| Side Rail Height: | 25-300mm |
| Length: | 2000mm,3000-6000mm or Customization |
| Thickness: | 0.6-3mm |
Steel Thickness (Recommend)
| 1.0mm-Width: | 50~100mm |
| 1.2mm-Width: | 100~150mm |
| 1.5mm--Width: | 200~500mm |
| 2.0mm--Width: | 600~700mm |
| 2.5mm--Width: | 800~1000mm |
| As customer requirements | |
Other Characteristics
| Color: | As customer requirements |
| Certification: | CMA/ILAC-MRA/CNAS/CE |
| Application: | Wiring system,cable management,electromechanical system,construction industry and so on. |
| Non standard specifications are availabe according to customer's requirement. | |
The fireproof structural design of the fireproof cable ladder is not the application of a single material or technology, but a systematic solution of "fire-resistant main material + layered insulation + detailed sealing" to build a safety barrier to prevent the spread of flames and protect cables during a fire. This is also its core advantage that distinguishes it from ordinary cable ladders.
01
Fire-resistant main materials build a solid foundation for fire prevention
Fire-resistant cable ladders are made of hot-dip galvanized steel plates or stainless steel as the main materials. With their high melting point of more than 1300℃, they maintain structural stability in fires. Some products are sprayed with intumescent fire-retardant coatings on the surface, which expand when exposed to fire to form an insulation layer, extending the fire resistance limit to more than 120 minutes.
02
Layered structure strengthens thermal insulation protection
A double-layer metal frame is filled with ceramic fiber, rock wool and other insulation materials to build a "metal shell - insulation layer - internal space" protection system. The closed trough box design further blocks flames and high-temperature smoke, delaying the internal cables from exceeding the safe temperature threshold by 30 minutes in a fire.
03
Detailed design to seal fire loopholes
High-temperature resistant alloy connectors are matched with fire-resistant sealants to ensure the stability of the ladder frame; when crossing the fire partition, fire-resistant mud, fire-resistant pillows and other blocking materials expand and solidify when exposed to fire, preventing flames and smoke from spreading through the gaps, and the fire resistance limit is consistent with that of building components.
04
Ensure the continuous operation of key power
In high-rise buildings, subways and other scenarios, fire-proof cable ladders can effectively protect key cables such as emergency lighting and fire pumps. For example, in a fire in a commercial complex, the fire-fighting cables protected by them enabled the sprinkler system to continue working for 2 hours, buying precious time for rescue.
Structural design of Fire-Resistant Cable Ladder
Innovative ladder design: taking into account heat dissipation and load-bearing
The structural design of the fireproof cable ladder deeply integrates the cable laying and fire safety requirements, and uses innovative structures to ensure the stable operation of cables in complex environments. On the main structure of the ladder, the open ladder design facilitates cable installation and maintenance, greatly improves the ventilation and heat dissipation capacity, and is suitable for places with dense cables and high heat generation; for the needs of heavy cables, the setting of reinforcing ribs increases the load-bearing capacity of the ladder by 30%-50%, ensuring the stability of the structure under long-term load.
Optimized connection and fixation: convenient and stable in one
The optimization of the connection and fixing structure allows the fireproof cable ladder to have both installation convenience and stability. Modular splicing can achieve rapid combination of components through bolts or buckles. Bolt connection is suitable for the high stability requirements of large projects, and buckle connection can significantly shorten the construction period of frequently adjusted scenes. At the same time, diversified fixing methods customize solutions for horizontal and vertical laying scenarios, and cooperate with fireproof blocking materials to ensure that the ladder is installed firmly and strictly abide by the fire partition specifications.
Multi-dimensional fire protection coordination: building a solid safety protection network
In the fire protection coordination design, the fireproof cable ladder builds safety protection from multiple dimensions. When crossing fire partitions, the special partition structure is combined with fireproof plugging materials to effectively block the spread of flames and smoke; the flat and regular ladder surface provides a good adhesion basis for the fireproof coating. The two work together to ensure that the coating expands evenly when a fire occurs, forming a reliable insulation layer and maximizing the normal operation time of the cable.
Repair scheme for Fire-Resistant Cable Ladder coating damage
Feasibility analysis of fireproof cable ladder coating damage repair
The repair effect of fireproof coating damage depends on the damage area. Small area damage (<5cm²) can restore more than 90% of the original performance through professional repair, while large area damage (>10cm²) needs to be returned to the factory for re-coating, and on-site repair can only restore 70-80% of the performance. Key evaluation indicators include fire resistance limit (high-quality repair ≥85% original performance), adhesion (must reach GB/T 9286 standard level 1) and expansion ratio (allowing ±10% deviation). Laboratory data show that the coating after standard repair can pass the GB 50016 fire resistance test and GB 20285 smoke toxicity test.
Specialized repair materials and standardized construction process
Repair requires special materials: intumescent fire retardant coating (epoxy modified phosphate base is recommended, expansion ratio ≥20 times at 800℃) is used for main body repair, and fire retardant mud (temperature resistance 1200℃) is suitable for joints such as bolt holes. Standardized construction includes three key steps: base surface treatment (sandblasting to Sa2.5 level + acetone cleaning), layered repair (conductive primer 80-100μm→fire retardant coating ≥1mm→optional weather-resistant topcoat), quality verification (infrared thermal imaging detection of hollowing + pull-out test ≥3MPa). The same batch of materials must be used during construction to avoid uneven expansion.
Acceptance standards and long-term maintenance plan
Double testing is required after repair: laboratory samples are sent for retesting of fire resistance, and flame test (alcohol torch burns for 3 minutes) and thickness test (deviation ≤15%) are used for rapid verification on site. It is recommended to establish a preventive maintenance system, including infrared thermal imaging inspections every 6 months, the establishment of coating health records, and emergency repair kits (including tube-mounted fire retardant coatings, ceramic fiber patches and other tools). Special attention should be paid: On-site self-repair is strictly prohibited in special scenes such as nuclear power plants, and the original factory certification plan must be used; after repair in ordinary industrial environments, a one-year special warranty is provided, and a repair site inspection report must be attached.
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