The purpose of explosion-proof doorsThe term blast door is very familiar to people, but what is suitable for people's lives! Let me explain the purpose of the explosion-proof door for everyone.The explosion-proof door is determined according to the fire door inspection report obtained. As long as it

Steel fire door purchase skills and maintenance precautions1. Buying skills for steel fire doors:(1) Qualification certificate: The real fire door must be tested and qualified according to the standard by the legal testing agency. There is also a production permit for safety technology protection pr

Tips for purchasing fire doorsFire doors are particularly important as the first level of home fire protection, but when you buy inferior fire doors, the fire doors no longer fire. What should you do? According to regulations, steel and wooden fire doors can be divided into three categories: Class A

What is steel fire door and steel fire door grade1. What is a steel fire doorSteel fire doors are made of steel materials for the door frame, door leaf frame and door leaf panel. If the door leaf is filled with materials, it is filled with non-toxic and harmless fire-proof and heat-insulating materi