Hainan Steel tells you: fireproof Rules

According to "fire protection design of tall buildings standard" rule, home fire rating above 19 layer level, fire-resistant component requirements for the column: 3 hours, Beam: 2 hours, floor: 1.5 hours; 19 floors below residence Fire rating of 2, fire-resistant component requirements for the column: 2.5 hours, Beam: 1.5 hours, floor: 1 hour. In terms of fire retardant paint, fire retardant coatings are generally thin refractory time is not more than 1.5 hours, more than 1.5 hours should be thick fireproof coatings.
Fireproof steel components can be coated concrete (or masonry brick method), fire retardant paint, fire board cladding and composite structures can be divided into several ways Firewood fire thickness of the plate and sheet, fireproof thickness of 20 ~ 50mm thickness , mainly calcium silicate fireproof board and swell bore stone fire board, the main types of KB board, CF board; fire sheet thickness between 6 ~ 15mm, the main types of short fiber reinforced cement pressure plate, fiber-reinforced ordinary silicon Calcium plate and glass cloth reinforced inorganic plates.
Fire resistance of concrete filled steel tubular steel columns than the type greatly improved, and the larger diameter steel pipe, the longer refractory period, whereas the smaller the diameter, the time required to achieve the same fire-resistant fire retardant coating thickness thicker
Fire steel beams can be filled within the H beam flange aerated concrete blocks, and then wipe 25 thick metal mesh coated with concrete to stone, may also fire board or fire-resistant coating, considering the particularity of residence, usually with the decoration use fire board cladding.
As China's iron and steel enterprises smelting technology, to meet the needs of the market, Baosteel, Wuhan Iron and Steel and other steel companies to develop successful fire-resistant weathering steel. Hainan Steel