Fireproof C slotted channel

C-section Steel Substrate: High-quality carbon structural steel or low-alloy high-strength steel, such as the commonly used Q235 and Q345 steel, is generally selected. These steels have good strength, toughness, and processing properties, providing stable structural support for the fireproof sprayed C-section steel.

Inorganic Fireproof Coating: It mainly consists of inorganic binders (such as silicates and phosphates), flame retardants (such as aluminum hydroxide and borates), fillers (such as calcium carbonate and talcum powder), and additives (such as dispersants and thickeners). It is non-combustible, non-toxic, high-temperature resistant, and has good durability. It can form a dense fireproof and heat-insulating layer at high temperatures.

Organic Fireproof Coating: It is made by adding flame retardants, fillers, solvents, etc., to synthetic resins as the base material. When exposed to high temperatures, it will expand to form a spongy or honeycomb-like carbonaceous foam layer, thus providing heat insulation and oxygen isolation and preventing the spread of fire. It has good adhesion and decorative properties.

The specifications and dimensions of fireproof sprayed C-section steel are similar to those of ordinary C-section steel. The common height is generally between 21mm and 82mm, the width is about 41mm, and the thickness ranges from 1.5mm to 6.0mm. 

Excellent Fire Resistance: After fireproof spraying treatment, the fireproof sprayed C-section steel can effectively slow down the temperature rise during a fire, reduce the strength loss of the steel at high temperatures, improve the fire resistance limit of the components, and gain more time for personnel evacuation and fire rescue.

High Structural Strength: It retains the original high strength and good load-bearing capacity of the C-section steel and can meet the mechanical performance requirements of the building structure under normal use and various load effects. It can be used as an important component in building structures, such as beams, columns, and purlins.

Convenient Construction: The C-section steel itself has good processing properties and is easy to cut, bend, and weld. The fireproof spraying process is also relatively simple and can be carried out on the construction site, which can improve the construction efficiency and shorten the construction period.

Good Durability: The fireproof coating is closely combined with the C-section steel substrate and has good weather, water, and corrosion resistance. It can maintain stable fire resistance and structural performance during long-term use and reduce maintenance costs.

Good Environmental Performance: Many fireproof spraying materials now adopt environment-friendly formulas, which are non-toxic and odorless and will not harm the environment or human health during construction and use.

Commercial Buildings: For example, shopping malls, office buildings, hotels, etc., it is used for the purlins of the building roof, wall keels, steel beams and columns, and other parts to improve the overall fire safety of the building.

Industrial Buildings: In industrial buildings such as factory workshops and warehouses, it can be used as fire protection components for roof trusses, crane beams, support systems, etc., to ensure the structural stability of industrial facilities in the event of a fire and reduce fire losses.

Public Buildings: Public buildings such as gymnasiums, exhibition halls, and theatres are crowded with people and have high fire protection requirements. Fireproof sprayed C-section steel can be used for the steel structure parts of these buildings to enhance fire resistance and ensure the safety of people's lives.

High-rise Buildings: In high-rise buildings, the use of fireproof sprayed C-section steel for steel structure components can improve the building's fire resistance rating, prevent the rapid spread of fire between floors, and create favorable conditions for fire fighting and personnel evacuation.

C-section Steel Production: First, the hot-rolled or cold-rolled steel strip is uncoiled by an uncoiled and then fed into a cold-bending forming unit. It is gradually bent and formed by multiple sets of dies to form the basic shape of the C-section steel. Then, it is cut according to the required length to obtain the C-section steel of the specified length.

Surface Treatment: The surface of the C-section steel is degusted and degreased to improve the adhesion of the fireproof coating to the substrate. Common methods include sandblasting and shot blasting to achieve a certain roughness and cleanliness.

Fireproof Spraying: Professional spraying equipment is used to evenly spray the prepared fireproof coating on the surface of the C-section steel. According to the type and performance requirements of the fireproof coating, there are multiple spraying operations may be required to achieve the specified coating thickness. During the spraying process, parameters such as spraying pressure, the distance between the spray gun and the workpiece, and the moving speed should be aware of to ensure the quality of the coating.

Drying and Curing: After spraying, the fireproof coating is naturally dried or dried in a specified environment to cure it and form a fireproof coating with a certain hardness and strength.

Quality Inspection: The fireproof sprayed C-section steel undergoes a comprehensive quality inspection, including detection of coating thickness, adhesion, fire resistance test, etc., to ensure the product meets relevant standards and engineering requirements. After passing the inspection, it is packaged and labeled for transportation and storage.