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Product overview
The non-slip trough cable tray with chequered plate cover is a complete cable containment system manufactured from either hot-dip galvanized steel (DX51D+Z275) or stainless steel 304/316L. The trough body features a perforated or solid bottom with integrated anti-slip embossing — typically a raised diamond pattern providing a coefficient of friction of 0.75 or higher (tested according to DIN 51130). The cover plate is constructed from 1.5mm thick chequered (durbar) plate with a 5mm raised pattern on the upper surface, which offers slip resistance for personnel walking on covered trays during inspection or maintenance. The cover attaches via stainless steel toggle latches or screw-down clamps, ensuring secure closure under vibration. The trough sidewalls are 50mm, 80mm, or 100mm in height, with factory-welded seams and pre-punched holes for splicing and supports. Typical applications include chemical plants, offshore platforms, tunnel cable galleries, and power distribution buildings where oil or grease contamination is present. The trough design prevents cable sagging and provides continuous shielding against falling debris.
R12Anti-slip rating (DIN 51130)
0.75 μDynamic coefficient of friction
IP4XWith cover & gasket option
Core advantages
Walkable surface safety
Chequered plate cover with 5mm raised diamond pattern provides slip resistance for foot traffic, reducing fall risk on elevated tray runs. Compliant with OSHA 1910.22 for walking-working surfaces.
Base anti-slip embossing
Trough bottom features mechanical embossing (non-slip texture) even before cover installation, preventing cable displacement during pulling and vibration. Pattern depth 0.8-1.2mm.
Sealed or ventilated options
Solid trough base for dust/debris protection or perforated base (35% open area) for ventilation. Covers are non-perforated to maintain contamination barrier.
Heavy duty load rating
Sidewall thickness 2.0mm to 3.0mm, cover thickness 1.5mm (chequered). Load capacity up to 600 N/m distributed load at 2m span, tested to IEC 61537.
Product characteristics
| Material grades | Hot-dip galvanized steel DX51D+Z275 (Z600 optional) / Stainless steel 304, 316L |
| Side wall height | 50mm, 80mm, 100mm, 120mm |
| Width range | 200mm to 800mm (in 50mm increments) |
| Cover chequered pattern | 5mm raised diamond, pitch 15x30mm, slip resistance value R12 |
| Base anti-slip type | Embossed button pattern or longitudinal ribbed texture |
| Finish (galvanized) | Hot-dip galvanized to ASTM A123 / ISO 1461, min 85μm coating thickness |
| Cover attachment | Toggle latch (stainless steel 304), spring-loaded, or screw-down clips every 600mm |
| Temperature range | -40°C to +250°C (steel version); -40°C to +400°C (stainless) |
| Fire performance | Non-combustible, Class A1 to EN 13501-1 |
Application scenarios
Heavy industrial plants (steel mills, cement factories) where oil leakage creates slippery conditions on standard trays.
Offshore platforms and shipbuilding – chequered cover prevents slipping in wet conditions, stainless steel version resists salt corrosion.
Tunnel cable galleries and underground substations where maintenance personnel walk above cable runs.
Airport baggage handling systems and apron drive areas requiring high durability and foot traffic resistance.
Food processing facilities (hygienic design with sloped covers to avoid liquid pooling).
Mining and mineral processing – heavy-duty tray with anti-slip cover for dusty environments.
Technical notes & solutions
Load testing for walkable covers
Chequered plate cover tested for concentrated load of 1.5kN on 200x200mm area without permanent deformation. For frequent foot traffic, specify additional cover supports at 1.2m intervals and use anti-skid strips on cover edges.
Corrosion under gaskets
When rubber gaskets are installed between cover and trough for IP rating, moisture entrapment may occur. Use neoprene gaskets with drainage slots (3mm openings every 200mm) or specify stainless steel for coastal zones.
Grounding continuity
Non-slip coating and chequered cover can interrupt grounding path. Install grounding jumpers (copper braid, 6mm²) between cover and tray body at maximum 6m intervals. Bonding lugs provided as accessory.
Cover removal safety
Individual cover sections weigh up to 15kg/m. For long sections, specify gas-strut assisted hinges or split covers with lifting handles. Safety catches prevent accidental opening on vertical runs.
Frequently asked questions
What is the difference between chequered cover and standard flat cover?
Chequered plate cover has a raised diamond pattern on the upper surface providing slip resistance for personnel walking on trays. Flat covers are smooth and become slippery when wet or oily. Chequered covers add 1.5-2.5kg per square meter but improve safety ratings to R12/R13.
Can the anti-slip embossing on the tray bottom damage cable jackets?
Embossing depth is controlled to 0.6mm maximum with rounded edges (radius 0.3mm). For sensitive fiber optic cables, use a smooth liner mat or specify non-perforated bottom without embossing in the cable contact zone.
How to maintain slip resistance after powder coating?
Powder coating (80-120μm) reduces texture height by 15-20%. For slip-critical areas, specify hot-dip galvanizing only (no additional coating) or apply slip-resistant aggregate coating (aluminum oxide) over powder coat.
Are custom cover shapes available for curved runs?
Yes. Flat chequered plates can be laser-cut to fit horizontal bends, vertical inside/outside bends, and reducers. Minimum bending radius for cover is 600mm; narrower radii require segmented covers.
Ordering reference information
Part number structure
NSTC-[Width]-[Height]-[Material]-[Cover type]
Example: NSTC-400-80-GS-CQ → width 400mm, height 80mm, galvanized steel, chequered cover with latches
- Material codes: GS (hot-dip galv), SS304, SS316
- Cover type: CQ (chequered), CL (clamp latch), CT (toggle latch)
Standard delivery contents
- Trough sections (3m or 6m length) with pre-welded end flanges
- Chequered plate cover sections + stainless steel hinges or latches
- Coupler plates and splice hardware (including grounding straps)
- Neoprene gasket (optional for dust tightness)
Packaging: wooden pallet with anti-scratch interlayers, max 25 sections per pallet.
*Technical data based on IEC 61537:2021 and ASTM F1679 friction testing. Load values verified for 2m support span. Field engineering recommended for seismic zones and high-wind outdoor applications.
