建筑物中的隐藏钢结构，对涂层的外观质量要求不高，应尽量采用厚型钢结构防火涂料。裸露的钢网架，钢屋架及屋顶承重结构，当规范规定的耐火极限要求在1.5h以下时，可选用薄涂型或超薄型钢结构防火涂料，耐火极限要求超过2.0h时，应选用厚型钢结构防火涂料。

The hidden steel structure in building, the appearance quality of the coating is not high, should try to use thick steel structure fireproof coating. The bare steel truss, steel roof and roof supporting structure, when the fire resistance limit of the specification requirements in the following 1.5h, can be used with thin or ultra-thin fireproof coating for steel structure, fire resistance requirements of more than 2.0h, should choose thick fire retardant coating for steel structure.

 

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