Steel for cable tray support

Steel is the primary material for cable tray supports, typically low-carbon or stainless steel, often galvanized or coated for corrosion resistance.

Types of Steel

Cable tray supports are generally made from low-carbon steel or stainless steel. Low-carbon steel is commonly used for its strength and ease of fabrication, while stainless steel is preferred in environments requiring higher corrosion resistance, such as chemical plants or outdoor installations .

Steel Finishes and Corrosion Protection

To enhance durability, steel supports are often treated with protective coatings:

• Pre-galvanized steel (ASTM A653M, coating G90 or G60) provides basic corrosion resistance .
• Hot-dip galvanized steel (ASTM A123 or BS EN ISO 1461:2009) offers superior protection, especially for outdoor or humid environments .
• Custom coatings can be applied depending on environmental conditions or aesthetic requirements .

Structural Considerations

Steel support elements include wall brackets, suspended supports, center suspensions, and C-channel frames. These components are designed to carry the weight of cable trays and their contents, with typical load capacities up to 280 lbs per foot when properly spaced . Supports are often attached using threaded rods, anchors, or hex bolts, depending on whether the mounting surface is concrete, steel, or another material .

Standards and Design

Cable tray support systems are designed according to standards such as DIN EN 61537 and BS 6946:1988, ensuring mechanical strength, safety, and compatibility with cable trays, ladders, and mesh trays . Proper spacing, alignment, and secure fastening are critical to prevent sagging and maintain cable integrity .

Accessories and Customization

Additional steel components, such as mounting plates, clamps, and brackets, allow for flexible installation and support of junction boxes or directional changes in the tray layout . Supports can be customized in length, finish, and configuration to suit specific project requirements .

Summary

For reliable cable tray support, low-carbon or stainless steel with appropriate galvanization or coating is recommended. Supports must be designed to handle the expected load, comply with relevant standards, and be installed using suitable mounting hardware. Customization options allow adaptation to environmental conditions and structural constraints .