wilson.jinkai@gmail.com
+8613932676631
+8613932676631
14
2026
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07
Choosing the Right BMT and Zinc Coating for Metal Stud and Track
Thickness and zinc coating should be selected according to the profile design, application, local standard and service environment—not simply by choosing the highest number.
When comparing light steel framing products, two specifications are often discussed first: base metal thickness and zinc coating. Understanding both helps buyers compare quotations correctly and avoid receiving a product that looks similar but performs differently.
BMT means base metal thickness—the thickness of the steel before the metallic coating is applied. The suitable BMT depends on the profile size, wall or ceiling application, member spacing, design load, installation height and local building requirements. A thicker profile is not automatically the best choice; the complete system must be considered.
Zinc coating helps protect the steel against corrosion. Common project requirements may include coating masses such as 120, 180 or 275 g/m², subject to the applicable standard. The required level depends on the local code, indoor or exposed conditions, expected service environment and customer specification.
For accurate production and pricing, buyers should provide the profile drawing, required BMT, steel grade, coating requirement, length and applicable standard. Jinkai can review whether the specification is practical to manufacture, while structural selection and compliance should be confirmed by the customer's qualified local designer or engineer.
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