Quality Checking Matt PPGI

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The durability standards for pre-coated steel sheets mainly include the following aspects: Fire Resistance Limit: The fire resistance of pre-coated steel sheets is generally determined by factors such as material composition, thickness, and the environment in which they are used. Ordinary pre-coated steel sheets typically use galvanized steel sheets or organically coated steel sheets as the surface material, filled with insulation materials such as polyurethane foam or rock wool. These sheets have relatively poor fire resistance, generally with a fire resistance limit of around 15-30 minutes. For higher fire resistance, special types of fire-resistant pre-coated steel sheets can be selected, such as fire-resistant rock wool boards or fire-resistant glass wool boards. These sheets offer higher thermal insulation and fire resistance through their internal filling materials, achieving a fire resistance limit of 1-2 hours or even longer. Coating Durability: Coating durability is an important technical performance characteristic of pre-coated steel sheets, usually measured by the length of their service life. Coating durability is closely related to factors such as the type of coating, coating thickness, and the corrosiveness of the environment in which it is used. Atmospheric exposure testing is a relatively reliable method for evaluating coating durability. However, it suffers from drawbacks such as long testing time, high cost, and management difficulties.

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CHANGZHOU JIAYE NEW MATERIALS CO., LTD.

 Audited supplier

4 month

Address: China

Main Product: color coated aluminum, prepainted metal, Home Appliance, Stainless castings, pre-coated stainless, VCM Corrosion resistant film

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