The steel fireproof door is composed of steel frame and steel door leaf, which is not easy to be deformed by impact and damaged by external force. It can be used normally for a long time without replacement. Under the premise of fire protection effect, steel fire doors have the characteristics of environmental protection and durability.

ZHTdoors yong’inga qarshi eshiklar, yong’in eshiklari va derazalarida 31 yillik ishlab chiqarish tajribasi. Asosiy UL yong’in eshiklari, EN yong’in eshiklari, BS EN yong’in eshiklari va boshqalar.