How to Distinguish the Quality of Cable Trays?

2025-11-24 01:10:28

A traditional and age-old method is painting. By applying paint to the tray surface, a protective layer is formed to isolate the tray from natural elements, preventing rust. However, paint is prone to peeling and requires reapplication later, resulting in high long-term costs.

Galvanizing technology has become more popular for forming protective layers on tray surfaces. Cable tray manufacturers perform hot-dip galvanizing (HDG) on the tray surface to form a galvanized layer, which also prevents rust. Unlike paint, the galvanized layer does not peel off, saving significant trouble in subsequent maintenance.

With technological advancements, new rust-proof methods for cable trays have emerged—using materials such as fiberglass-reinforced plastic (FRP), aluminum alloy, or SMC plastic. These rust-proof materials are ideal for manufacturing corrosion-resistant cable trays.

It is important to note that the main raw materials for Long-span cable trays include insulating materials, electrolytic copper, and sheathing materials. The quality of cable trays is largely determined by the quality of these raw materials.

How to Distinguish the Quality of Cable Trays?

When selecting cable trays, focus on the following key points:

1. Color of the Tray Core (for Metal Trays)

Industry insiders note that for copper-core cables/trays, a yellowish-red hue indicates high-quality electrolytic copper with minimal impurities. A purplish-black copper core suggests excessive impurities, making it prone to breakage.

For aluminum-core cables/trays, avoid products with a dull, matte finish. High-quality aluminum cores have a bright silvery-white appearance.

2. Appearance and Certifications

Check for quality management system certificates (e.g., ISO) and product qualification certificates. Be cautious of counterfeit certificates—verify their authenticity and standardization.

Ensure basic information such as brand logo, specifications, and voltage rating is complete. Do not purchase products with missing information.

For added assurance, unpack the outer packaging and inspect the insulation layer (if applicable) for smoothness and no damage.

3. Price

Be wary of products with unreasonably low prices. Unscrupulous merchants often sell inferior cables and trays under the guise of "high quality at low prices" using deceptive practices.

4. Tactile Sensation

Run your hand gently along the tray surface. A high-quality tray will feel smooth without scratches. If the texture is soft and elastic, the tray is likely of good quality and suitable for purchase.