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Several Fire Protection Measures of Seamless Steel Pipes
May 07, 2021
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The seamless steel pipe usually will lose the bearing capacity and get a great degree of deformation at 450~650℃ temperature, resulting in steel column and steel beam bending. Then, it can not be used due to too large deformation. Generally, the fire time limit is about 15 minutes without protection of seamless steel pipes. GB5310 is widely used in the pipelines of petroleum and chemical equipment and stainless steel structural parts of various applications. In addition to ensuring the chemical composition and mechanical properties, the steel pipes used to withstand fluid pressure should be guaranteed to pass the hydraulic test.
All kinds of special steel pipes should be guaranteed according to the provisions. The seamless steel pipe is widely used in the manufacture of structural and mechanical parts, such as petroleum drill pipes, auto transmission shafts, bicycle frames and construction of steel scaffolding is used with manufacturing annular parts of steel pipes. It can improve material utilization, simplifying the manufacturing process, material saving and processing time. It has been widely made from steel pipes. And the length of time is also related to the component heat absorption rate.
This article introduces several different kinds of fire protection measures of seamless steel pipes.
1. Outsourcing layers
The outer layer is added on the surface of the seamless steel pipe, which can be cast on the spot (forming) or sprayed.
The outer layer of the cast-in-place solid coagulation is usually strengthened with steel meshes or steel bars to limit the shrinkage cracks and ensure the strength of the shell. The spraying can be applied on the surface of seamless steel pipes to form a protective layer at the construction site. The sand pumps can be lime cement (powder hydrorigid inorganic cementing material) or perlite (type: acid lava) or asbestos.
At the same time, the outer layer can also be prefabricated with perlite, asbestos, gypsum or asbestos cement, light concrete, using adhesive, nails, bolts (composition: heads and screws) fixed on seamless steel pipes.
2. Fill with water
Water filling in the hollow seamless steel pipes is an effective protection against fire.
In this way, the seamless steel pipe can be kept at a low temperature in the fire, and the water circulates in the seamless steel pipe to absorb the heat of the material itself. The heated water can be recirculated after cooling, or cool water is brought in by conduit to replace the heated water.
3. Shielding
The seamless steel pipe is arranged in the wall or ceiling composed of fireproof material, or the component is wrapped in the gap between the two walls. As long as a little refractory material is added, the purpose of fire prevention can be achieved. This is a very economical method of fire prevention.
4. Inflate materials
The use of seamless steel pipe fire protection paint to protect components, this method has the advantages of fire insulation performance. There are no limits in construction by the geometrical shape of seamless steel pipes and other advantages. Generally, there is no need to add auxiliary facilities and the coating mass is light.
It also has a certain role in aesthetic decoration, which belongs to modern advanced fire prevention technology measures.
All kinds of special steel pipes should be guaranteed according to the provisions. The seamless steel pipe is widely used in the manufacture of structural and mechanical parts, such as petroleum drill pipes, auto transmission shafts, bicycle frames and construction of steel scaffolding is used with manufacturing annular parts of steel pipes. It can improve material utilization, simplifying the manufacturing process, material saving and processing time. It has been widely made from steel pipes. And the length of time is also related to the component heat absorption rate.
This article introduces several different kinds of fire protection measures of seamless steel pipes.
1. Outsourcing layers
The outer layer is added on the surface of the seamless steel pipe, which can be cast on the spot (forming) or sprayed.
The outer layer of the cast-in-place solid coagulation is usually strengthened with steel meshes or steel bars to limit the shrinkage cracks and ensure the strength of the shell. The spraying can be applied on the surface of seamless steel pipes to form a protective layer at the construction site. The sand pumps can be lime cement (powder hydrorigid inorganic cementing material) or perlite (type: acid lava) or asbestos.
At the same time, the outer layer can also be prefabricated with perlite, asbestos, gypsum or asbestos cement, light concrete, using adhesive, nails, bolts (composition: heads and screws) fixed on seamless steel pipes.
2. Fill with water
Water filling in the hollow seamless steel pipes is an effective protection against fire.
In this way, the seamless steel pipe can be kept at a low temperature in the fire, and the water circulates in the seamless steel pipe to absorb the heat of the material itself. The heated water can be recirculated after cooling, or cool water is brought in by conduit to replace the heated water.
3. Shielding
The seamless steel pipe is arranged in the wall or ceiling composed of fireproof material, or the component is wrapped in the gap between the two walls. As long as a little refractory material is added, the purpose of fire prevention can be achieved. This is a very economical method of fire prevention.
4. Inflate materials
The use of seamless steel pipe fire protection paint to protect components, this method has the advantages of fire insulation performance. There are no limits in construction by the geometrical shape of seamless steel pipes and other advantages. Generally, there is no need to add auxiliary facilities and the coating mass is light.
It also has a certain role in aesthetic decoration, which belongs to modern advanced fire prevention technology measures.
