What is a non porous tray fire proof cable tray?
There are some holes in the bottom tray bridge, main cable heat, no hole is at the bottom of the tray tray is a piece of board, no holes, fire refers to the bridge surface coated with fireproof paint, prevent fire fire direct threat of cable safety.
Do not think so complex, non porous tray fire cable bridge is the fire line, galvanized on the basis of spraying fire retardant paint, there are special requirements are also lined with fire board.
No fire hole tray is trough cable tray, outside spraying fire retardant paint or fireproof paint or fireproof plastic, some will add a layer of fireproof board inside, fireproof paint or fireproof paint is easy to scratch, affect the appearance, if the long-distance transport or if choose fire plastic,
