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By certification 
Product Introduction
The pre-galvanized ladder cable tray has small weight, low cost, unique shaping, fine perameability and quick heat dissipation, It is applicable for laying of big-diameter cables, especially high-voltage, low-voltage and power cables. We passed the ISO 14001 and 45001 system certification, and CE Certificate.
The Pre-Galvanised Ladder is suitable for many industries:
Commercial, Education, Health, Oil and Gas, Petrochemical, Power Generation, Retail, Telecoms and Tunnels.
Pre-Galvanized also known as mill-galvanized, is produced in a rolling mill by passing steel coils through molten zinc. These coils are then slit to size and fabricated. Areas not normally coated during fabrication, such as cuts and welds, are protected by neighboring zinc, which works as a sacrificial anode. During welding, a small area directly affected by heat is also left bare, but the same self-healing process occurs.pregalvanized steel is not generally recommended for outdoor use or in industrial environments Pre-galvanized. The carbon steel sheet are galvanized before producing the cable ladders. It is the cheapest type. But the zinc coating will be broken during production. So it has shorter service life than others. Pre plating: a method of depositing a metal film in a certain composition solution or under certain operating conditions to improve the adhesion between the subsequent coating and the substrate.
Sometimes, during electroplating, the coating material is easy to deposit on the substrate surface, resulting in loose coating and poor adhesion. The purpose of pre plating is to pre coat the transition layer with good adhesion on the substrate surface. After that, the coating can have good adhesion with the substrate.
http://www.acecabletrays.com/
