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Galvanized GI Sheet Metal Gauge to inch/mm Thickness

Galvanized GI Sheet Metal Gauge to inch/mm Thickness: Gauge (or gage) dimensions are numbers that indicate the thickness of a piece of sheet and a higher number refers to a thinner sheet. The equivalent thicknesses differ for each standard size of the gauge, which has been developed based on the weight of the sheet for a given material.

The manufacturer’s standard calibrator provides thicknesses for standard steel, galvanized steel, and stainless steel.

Finally, there is a standard for zinc where a higher indicator number indicates a thicker sheet. The following table can be used to determine the equivalent sheet thickness, in inches or millimeters, for an indicator number of the selected indicator size standard.

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Galvanized GI Sheet Metal Gauge to inch/mm Thickness:-

Gauge (Ga.) It is a unit of measurement of the length for diameters originating in North America and belongs to the Browne & Sharpe measuring system. Originally used in the fields of medicine and jewelry, the greater the number, the smaller the diameter and now it is also used to indicate the thickness.

Ga. It is different from inches, there is no conversion formula. Even when the non-ferrous metal plate and the steel plate are same Ga., The thickness is really different.

You can find the gauge to mm / inch conversion:-

How are sheet metal meters(Gauge) used?

Meters are used to specify the thickness of a sheet. The meters are neither standard nor metric and the values are independent of these measurement systems. A gauge conversion table can be used to determine the actual thickness of the sheet in inches or millimeters.

For example, steel with an 18 gauge, according to a gauge conversion chart, measures 0.0478 inches or 1,214 millimeters. Indicator number “18” is irrelevant for actual measurements.

Today there are several measurement systems, with specific measurement designations used for specific types of metals. For example, in a one-caliber system, 18-gauge steel has a thickness of 0.0478 inches, but 18-gauge aluminum has a thickness of 0.0403 inches. Due to the different thicknesses, it is necessary to use a table of indicators to ensure that the metal meets the required dimensions.