Fire door is made of fire-retardant materials with fire-resistant stability, integrity and thermal insulation. It is mainly used in the fire compartment of the building firewall opening, stairwell entrance and exit, evacuation corridor, pipeline wellhead and so on. It is usually used for personnel access. In case of fire, it can prevent the spread of flame and prevent the flow of combustion smoke, and it is sealed when the positive air supply system is working effect. In today's increasingly mature fire protection technology, there are fire doors in buildings with fire protection requirements. At present, the vast majority of domestic fire protection design codes clearly require the use of fire doors.
At present, there are more than 1000 domestic enterprises producing and selling fire doors. There are many kinds of fire doors on the market, but there are only a few products with excellent quality. The prices of fire door products vary, some even differ several times. Shoddy and shoddy products are still everywhere in the market.
The thickness of fire door steel plate produced by many manufacturers is only half of the standard, and the filling material has poor fire resistance, insufficient thickness and poor quality of fireproof board. In order to obtain the market access certificate of relevant products, some enterprises even pay high prices to buy samples for inspection. After the certificate is obtained, the quality of their own products is still unqualified.
The person in charge of the Fire Department of the Ministry of public security once told the media that in recent years, the demand for public fire-fighting facilities and fire-fighting safety products has increased rapidly in China, and the fire-fighting industry has shown an unprecedented development momentum. At present, there are more than 10000 production and service-oriented enterprises in the whole industry, producing nearly 1000 kinds of fire-fighting products. However, the market order of China's fire products is still chaotic, a large number of poor quality fire products flow into the construction engineering and fire control system, leading to the virtual existence of fire-fighting facilities, causing a large number of fire hazards and seriously endangering public safety.
The new standard has revised the category, classification, manufacturing materials and related concepts and requirements of fire doors, and has stricter requirements for product quality identification and inspection, which is a thorough reshuffle of fire door enterprises. It is a great challenge for fire door manufacturers whether they can pass the identification of the new standard and get a new certificate. Owning this new ticket is the first prerequisite for all enterprises to continue to sell.
Experts said that fire doors are fire isolation equipment which plays a key role in various buildings. Whether the fire door works effectively or not is closely related to the loss caused by the fire. According to the authoritative data statistics and analysis, 82% of the deaths in the fire in crowded places are due to poisoning and suffocation caused by inhalation of toxic smoke released from the combustion of interior decoration materials. It is not fire, but smoke, that is the fatal culprit in fire accidents. Before the fire spread greatly, many people had been in a coma due to inhalation of toxic smoke and died in the fire.
