electric ladder , Iran

The cable ladder is manufactured from hot-dip galvanized steel sheet with a thickness of 1.5 to 4 mm. The galvanized coating has a minimum weight of 550 grams per square meter. The standard width of this product varies from 150 to 1000 mm. Typical section lengths are 3 or 6 meters with a length tolerance of ±3 mm. The distance between the centers of the two side rails complies with the IEC 61537 standard. The ladders ultimate strength is designed for distributed loads up to 750 kg per meter. The load capacity for a 6-meter span reaches 2500 kg.

The structure consists of two side rails with a C or U profile and welded cross rungs. The center-to-center distance of the rungs is typically 225 or 300 mm. The side rail height is selected between 40 and 200 mm to control bending stiffness. Connections use Class 8.8 bolts and nuts with anti-corrosion coating. Modern ladders often feature an additional polyester powder coating. This coating increases resistance to chemical environments. The system facilitates cable installation, inspection, and network expansion.

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