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Q: How to measure the thickness of patterned steel plate?

22/08/2025 13:27:37 1    answers in: Product Standards
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Patterned steel plate is widely used for its anti-slip properties and structural strength. Its thickness measurement requires a balance of accuracy and operational standards. Unlike ordinary steel plate, the uneven pattern design of patterned plate imposes special requirements on measurement methods.

The key to measurement is distinguishing between "nominal thickness" (including pattern height) and "actual substrate thickness," the latter of which directly determines the material's load-bearing capacity. The "three-zone sampling method" should be used for measurement. Three to five flat, pattern-free areas are selected at the edge, center, and diagonal locations of the steel plate to establish a three-dimensional inspection network.

Pretreatment of the sampling points requires cleaning with alcohol to remove the oxide layer. Severely corroded areas should be sanded to a metallic sheen. Multi-dimensional measurement requires measuring each sampling point once at 0°, 90°, and 45°. The data is recorded, and the average value is calculated for that point. This cross-sectional measurement method effectively identifies localized substrate unevenness.

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