变形缝阻火带在建筑工程中一般选用硅酸铝双层镀锌铁皮（或不锈钢板）。这些材料的防火性能和防火性能均通过了消防中心的检测。防火分区可满足1小时、2小时、3小时和4小时的需要。对于那些重要的工程，在地面、内墙和屋顶都有防火措施。

安装方法：将一块U形铁皮放好固定，在铁皮上垫一层硅酸铝，最后在铁皮上再放一块铁皮。当要求较高时，可采用0.2-0.4mm不锈钢代替铁皮，并在不锈钢板底部粘贴防火涂料（费用为前者的2-4倍）。最经济的方法是将防火硅酸铝直接填充到接缝中，防火效果更好。

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Aluminum silicate double-layer galvanized iron sheet (or stainless steel plate) is generally used in construction projects. The fireproof performance and fireproof performance of these materials have passed the test of fire control center. The fire compartment can meet the needs of 1 hour, 2 hours, 3 hours and 4 hours. For those important projects, there are fire prevention measures on the ground, interior walls and roofs.

Installation method: place and fix a U-shaped iron sheet, pad a layer of aluminum silicate on the iron sheet, and finally put another iron sheet on the iron sheet. When the requirements are high, 0.2-0.4mm stainless steel can be used instead of iron sheet, and fireproof coating can be pasted at the bottom of stainless steel plate (the cost is 2-4 times of the former). The most economical method is to directly fill the joint with fireproof aluminum silicate, and the fire prevention effect is better.