Technical Specifications for Stainless Steel Cable Trays

Stainless steel cable trays are available in 304 and 316 grades, designed for industrial and corrosive environments, with standardized widths, rung spacing, and load capacities.

Material and Grades

Stainless steel cable trays are typically manufactured from AISI 304 or 316 stainless steel. Type 304 is widely used for its high resistance to rust and general corrosion, suitable for factory, food, and kitchen installations, while Type 316 contains 2–3% molybdenum, enhancing resistance to chlorides and industrial solvents, making it ideal for outdoor, coastal, and chemical processing environments. All components, including side rails, rungs, and hardware, are often made from the same stainless steel grade to ensure uniform corrosion resistance.

Tray Types and Construction

Ladder trays consist of two longitudinal side rails with transverse rungs welded at standard spacing of 6, 9, or 12 inches, capable of supporting a 200 lb concentrated load per rung with a safety factor of 1. 5. Solid or ventilated trays provide additional protection for sensitive instrumentation and control cables, with solid covers used where heat buildup is minimal.

Return flange trays are available in light, medium, and heavy-duty ranges for various industrial applications.

Dimensions

Widths: 50mm, 75mm, 100mm, 150mm, 225mm, 300mm, 450mm, 600mm, 750mm, 900mm. Depths: Typically 3, 4, or 5 inches per NEMA VE 1 standards. Lengths: Standard straight sections are supplied in 10, 12, 20, or 24-foot sections.

Rung spacing in radiused fittings: Industry standard 9 inches at the center of the tray width.

Load and Mechanical Specifications

Each rung must support a 200 lb concentrated load at the center with a safety factor of 1. 5. Splice plates are high-strength steel, secured with 8 nuts and bolts per plate, with electrical resistance not exceeding 0.

00033 ohm. Straight sections are fabricated as I-beams for structural integrity.

Standards and Compliance

Installation should follow NEMA VE 1 and VE 2 standards. Stainless steel trays comply with ASTM 9108-94 (2015) or BS EN 10088-1: 2014 for chemical composition and corrosion resistance.

C

E marking and third-party certifications (UL, IMQ, LCIE) ensure compliance with European and international directives.

Applications

Stainless steel cable trays are extensively used in oil, gas, petrochemical, rail, offshore, marine, nuclear, food processing, and heavy industry applications due to their durability and corrosion resistance. They are suitable for environments with high salinity, chemical exposure, or de-icing salts.

Accessories

A full range of couplers, bends, tees, and risers is available to configure cable routing systems for complex installations. These specifications ensure that stainless steel cable trays provide reliable cable support, corrosion resistance, and compliance with industry standards for a wide range of industrial and commercial applications.