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National Standard for Cable Tray Thickness Deviation

Cable tray thickness deviation is regulated by national standards, with allowable tolerances depending on tray type, width, and material, ranging from 1. 0mm to 2. 5mm.

Overview of Standards

The main national standards for cable tray thickness deviation include: JB/T 10216-2000: Suitable for outdoor hot-dip galvanized cable trays. JB/T 10216-2013: Suitable for indoor galvanized cable trays. QB-T 1453-2003 and CECS31-2003: Applicable to light industry and steel cable trays.

Thickness Deviation by Tray WidthJB/T 10216-2000 StandardWidth < 100mm: Minimum thickness deviation for tray and cover plate is 1. 0mm. Width > 800mm: Minimum thickness deviation for tray is 2.

5mm, and for cover plate 2. 0mm. JB/T 10216-2013 StandardWidth ≤ 150mm: Minimum thickness deviation for tray and cover plate is 1.

0mm. Width > 800mm: Minimum thickness deviation for tray is 2. 0mm, and for cover plate 1.

5mm. 2003 Standards (QB-T 1453-2003 / CECS31-2003)Width < 400mm: Tray deviation 1. 5mm, cover plate 1.

2mm. Width > 800mm: Tray deviation 2. 5mm, cover plate 2.

0mm.

Material-

Specific Considerations

Steel trays: Common thicknesses include 1. 0mm, 1. 2mm, 1.

5mm, 2. 0mm, and 2. 2mm.

Aluminum alloy trays: Thicknesses include 1. 2mm, 1. 5mm, 2.

0mm, 2. 2mm, and 2. 5mm.

Galvanized trays: Zinc layer thickness varies; thin layer ≥12 microns, thick layer ≥65 microns.

Summary

The allowable thickness deviation depends on tray type, width, and material, with smaller trays having tighter tolerances (around 1. 0–1. 5mm) and larger trays allowing greater deviations (up to 2.

5mm). Manufacturers generally follow either the 2000 or 2013 standards, ensuring compliance with national specifications for both indoor and outdoor applications.

National Standard for Cable Tray Thickness Deviation

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