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Seamless steel pipe in general In 450 ~ 650 鈩� temperature will lose bearing capacity, produce very large deformation, resulting in steel beams, steel columns bending, the result due to excessive deformation and can not be reapplied, generally do not have to maintain the fire resistance level of seamless steel pipe for 15 minutes up and down. The length of this time is also related to the rate of heat absorption reaction of prefabricated components. The following details several different types of seamless steel pipe fire safety measures.

1, the outer insulation layer. It is in the seamless steel pipe surface plus the outer insulation layer, can be poured molding, can also choose to spray paint method. Pouring and shaping of the solid line of concrete outer insulation layer generally with steel wire mesh or construction steel to enhance to limit the closing gap, and to ensure the compressive strength of the shell. Spray paint method can be in the construction site of seamless steel pipe surface rubbing sediment pump to produce a protective layer, sediment pump can be lime powder concrete or stucco plaster, but also can be mixed with ceramic or stone wool. In addition, the outer insulation layer can also be made of ceramic, stone wool, cooked gypsum or stone wool concrete, light concrete made of cement precast panels, the choice of adhesive, steel nails, foot bolts fixed immovable in the seamless steel pipe.

2, water injection. Hollow type seamless steel pipe water injection is a reasonable protective measure against fire accidents. This kind of way can make the seamless steel pipe in the fire accident to maintain a low temperature, water in the seamless steel pipe car circulation, digestion and absorption of raw materials themselves in the heat of heat. The water in case of heat will be cooled to be able to carry out the circulation, or introduce cold water by the pipeline to replace the water in case of heat.

3, shielded off. Seamless steel pipe set in the fire-resistant insulation material composed of wall or canopy, or prefabricated components wrapped in the gap between the two walls, only need to enhance a small amount of fire-resistant insulation material or not to enhance that can be done to achieve the purpose of fire safety. It is a very economic development of fire safety way.

4, Peng up raw materials. Selection of seamless steel pipe fireproof material maintenance prefabricated components, this kind of way with fire safety and fire resistance performance is good, engineering and construction will not be limited by the seamless steel pipe geometry and other advantages, generally do not need to add auxiliary equipment, and the coating is light in quality, but also has a certain degree of aesthetic elegance of the decorative design effect, attributed to the contemporary excellent fire safety technology measures.

At this stage, high-rise residential seamless steel pipe project building increasing, especially some multi-storey buildings, the selection of seamless steel pipe raw materials more common. Multi-storey building once the safety accident, the fire is not in a short period of time can be eliminated, which provides us in the building planning and design, increase the building decoration material fire safety maintenance, in order to improve its fire resistance level, and in the engineering and construction of the internal development of the necessary countermeasures, in order to reduce the casualties and economic losses.