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Thickness of metal trunking and cable tray, national standard
The thickness of B ≤ 100 plate is 1.0 mm, 100 ≥ b > 150 plate is 1.2150 ≥ b > 400 plate is 1.5400 ≥ B ≥ 800 plate is 2.0, b > 800 plate is 2.0
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