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Shandong Hongfeng Electric Group Co., Ltd.

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What is the national standard for galvanized cable tray?

Release time:

2023-12-08

Galvanized cable tray belongs to steel cable tray, so the national standard of steel cable tray is

Galvanized cable tray belongs to steel cable tray, so the national standard of steel cable tray is also the national standard of galvanized cable tray. The national standards of steel cable tray include "CECS31-2006 Steel Cable Tray Engineering Design Code" (abbreviated as 2006 Bridge National Standard) and "T CECS31-2017 Steel Cable Bridge Engineering Design Code" (abbreviated as 2017 Bridge National Standard).
Galvanized cable tray is divided into galvanized bridge and hot-dip galvanized bridge. 2017 bridge national standard stipulates that galvanized cable bridge can be used in indoor ordinary, hot and humid and moderately corrosive environment, and can not be used in indoor strongly corrosive environment. Can not be used outdoors.
Hot-dip galvanized cable tray needs passivation treatment when it is used in moderate corrosion and strong corrosion indoor and outdoor environment.
2017 the national standard of the bridge requires that when the galvanized cable bridge is installed horizontally, the span of the support and hanger should take into account the safety load of the bridge, which should be able to bear the weight of the cable in the bridge and the bridge itself. The distance between the two support points should not exceed 2 meters, and long-span galvanized cable bridges should be considered for those more than 2 meters.
When the galvanized cable bridge passes through the firewall or fireproof floor, it should be fireproof and plugged, and the space around the galvanized cable bridge laid in the cable shaft should be layered and stacked with fireproof bags, just like the structure of a brick wall. Fill into the final space gap, the fireproof package can be divided into small parts to fill.
The fireproof board should be fixed on the surface of the firewall, and the width and height of the fireproof board should be larger than that of the fire hole 300mm.

Keywords：

What are the national standards for cable tray?

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What are the national standards for cable tray?

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