What type of steel is used for vertical shaft cable tray supports

Vertical shaft cable tray supports are typically made from low carbon steel, galvanized steel, or stainless steel, often finished with pre-galvanization or hot-dip galvanization for corrosion resistance.

Common Steel Types

Low Carbon Steel: Most vertical shaft supports are manufactured from low carbon steel, which provides good strength, ductility, and ease of fabrication. This steel is often cold-formed into channels or angles according to standards such as BS 6946:1988 . Galvanized Steel: To enhance corrosion resistance, supports are frequently pre-galvanized (ASTM A653M coating G90/G60) or hot-dip galvanized after fabrication (ASTM A123 or BS EN ISO 1461:2009) . Galvanization protects the steel from rust, making it suitable for indoor and outdoor installations, including industrial environments. Stainless Steel: In highly corrosive environments, such as chemical plants or coastal areas, stainless steel supports are used for their superior resistance to corrosion and long-term durability .

Structural Forms

Vertical shaft supports are commonly fabricated as angle steel supports or metal framing channels. Angle steel provides robust structural stability and can be welded or bolted into place, making it ideal for heavy loads and industrial applications . Metal framing channels, often cold-formed from low carbon steel, allow flexible attachment points and are compatible with various cable tray systems .

Key Considerations

• Load-Bearing Capacity: Steel type and thickness should match the weight of the cable tray and cables.
• Environmental Conditions: Galvanized or stainless steel is preferred in humid, wet, or corrosive environments.
• Standards Compliance: Ensure supports meet relevant standards such as NEMA VE-2 for cable ladder and tray installations .
• Finish Options: Pre-galvanized, hot-dip galvanized, or custom coatings can be selected based on exposure and longevity requirements . In summary, low carbon steel with galvanization is the most common choice for vertical shaft cable tray supports, while stainless steel is used for high-corrosion environments. The selection depends on load requirements, environmental exposure, and compliance with industry standards.