Specifications and Models of Galvanized Flat Iron for Cable Trays

Galvanized flat iron cable trays are available in ladder, perforated, and solid-bottom designs, made from hot-dip or pre-galvanized steel, with various sizes and load ratings to suit industrial and commercial electrical installations.

Material and Finish

Galvanized flat iron cable trays are primarily made from high-quality steel coated with zinc to prevent corrosion. Two common galvanization methods are: Hot-dip galvanization: Steel is dipped in molten zinc, forming a thick, durable coating that provides long-term corrosion resistance, especially in humid or industrial environments. Electro-galvanization (pre-galvanized): Steel is coated with a thinner zinc layer via electroplating, suitable for indoor or less corrosive environments.

The thickness of the zinc coating directly affects corrosion resistance, and trays are often manufactured according to ASTM standards for galvanized steel.

Tray Types and Models

Galvanized flat iron trays come in several configurations: Ladder-type trays: Feature side rails with rungs for cable support, ideal for heavy-duty applications.

Eaton B-

Line offers Series 2, 3, 4, and 5 ladder trays for varying load capacities. Perforated trays: Flat-bottom trays with regularly spaced holes for ventilation and cable tie attachment. These are widely used in industrial and commercial installations.

Solid-bottom trays: Provide full support for sensitive cables and are used where cable protection from dust or liquids is required. Wire mesh (basket) trays: Lightweight, flexible trays for complex routing, also available in galvanized steel.

Dimensions and Load Ratings

Tray widths typically range from 50 mm to 600 mm, with side rail heights from 25 mm to 100 mm, depending on the model and manufacturer. Standard lengths are usually 3 meters, with options for custom lengths. Load ratings vary by tray type and series; ladder trays are rated for heavy-duty loads, while perforated and wire mesh trays are suitable for medium to light loads.

Accessories and Compliance

Galvanized flat iron trays are compatible with a range of accessories, including bends, tees, reducers, covers, and supports. They comply with NFPA 70 (NEC), UL standards, and NEMA VE 1 for electrical safety and grounding.

C

E marking may apply for European installations.

Manufacturers

Notable manufacturers and suppliers include: Eaton B-Line: Offers ladder, perforated, and wire mesh galvanized trays with multiple series for different load capacities. ABB/T&B: Provides pre-galvanized and hot-dip galvanized metallic cable trays suitable for evolving wiring needs.

TR

G Engineering Industries: Supplies hot-dip galvanized and GI electrical cable trays in custom sizes and specifications. Legrand: Offers a range of galvanized cable management solutions with CE marking and compliance with European directives.

Summary

Galvanized flat iron cable trays are versatile, corrosion-resistant solutions for cable management. Selection depends on environmental conditions, load requirements, and installation complexity. Hot-dip galvanized trays are preferred for outdoor or corrosive environments, while pre-galvanized trays are suitable for indoor use.

Ladder, perforated, and solid-bottom designs provide flexibility for different cable types and routing needs, with multiple manufacturers offering standardized and custom models.