Color steel refers to color coated steel plate. Color coated steel plate is a kind of steel plate with organic coating, which has the advantages of good corrosion resistance, bright color, beautiful appearance, convenient processing and forming, original strength of steel plate and low cost.
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There are several types of traditional coatings. The most high-grade is fluorocarbon coating, which can be used for almost 20 years. Generally, it is distributed from the steel plant in the form of drum to all parts of the country. The color steel plate we often see refers to the processed plate, with a thickness of about 50~100mm. It is composed of filler in the middle and color steel plates on both sides. Among them, the color plates have different thicknesses such as 0.4mm, 0.5mm and 0.6mm, and the intermediate layer can be polyurethane, rock wool or foam plastic. Due to the special profile, the workshop built with color steel plate is built quickly (such as Xiaotangshan Hospital during SARS), but the strength is low. The substrates of color coated steel plates are cold rolled substrates, hot-dip galvanized substrates and electro galvanized substrates. Coatings can be divided into polyester, silicon modified polyester, vinylidene fluoride and plastisol. The surface state of color coated steel plate can be divided into coating plate, embossing plate and printing plate.
Seismic resistance:The roofs of low rise villas are mostly sloped roofs. Therefore, the roof structure basically adopts the triangular roof truss system made of cold-formed color steel members. After the structural plates and gypsum boards are sealed, the light steel members form a very solid \"plate rib structure system\". This structure system has stronger seismic resistance and resistance to horizontal loads, and is suitable for areas with seismic intensity of more than 8 degrees.
Wind resistance:The color steel structure building has the advantages of light weight, high strength, good overall rigidity and strong deformation capacity. The self weight of the building is only one fifth of that of the brick concrete structure, which can resist the hurricane of 70 meters per second, so that life and property can be effectively protected.
Durability:The residential structure of color steel structure is composed of cold-formed thin-walled steel members, and the steel ribs are made of super anti-corrosion high-strength cold-rolled galvanized sheet, which effectively avoids the impact of corrosion of color steel plate during construction and use, and increases the service life of light steel components. The service life of the structure can reach 100 years.
Thermal insulation:The thermal insulation material used for color steel sandwich panel is mainly glass fiber cotton, which has good thermal insulation effect. The thermal insulation board used for the external wall can effectively avoid the \"cold bridge\" phenomenon of the wall and achieve a better thermal insulation effect. The thermal resistance value of R15 insulation cotton with a thickness of about 100mm can be equivalent to a brick wall with a thickness of 1m.
Sound insulation:Sound insulation effect is an important index for evaluating residential buildings. Hollow glass is used for windows installed with color steel + light steel system, which has good sound insulation effect, and the sound insulation reaches more than 40 db; The sound insulation effect of the wall composed of light steel keel and thermal insulation material gypsum board can be as high as 60 dB.
Health:Dry operation construction can reduce the environmental pollution caused by waste. Color steel materials can be 100% recycled, and most of other supporting materials can also be recycled, which is in line with the current awareness of environmental protection; All materials are green building materials, which meet the requirements of ecological environment and are conducive to health.
Comfort:Color steel wall adopts high-efficiency energy-saving system, which has breathing function and can adjust indoor air dry humidity; The roof has a ventilation function, which can form a flowing air room over the interior of the roof to ensure the ventilation and heat dissipation requirements inside the roof.
Quickness:All dry operation construction is not affected by environmental seasons. For a building of about 300 square meters, it only takes 5 workers 30 working days to complete the whole process from foundation to decoration.
Environmental protection:Color steel materials can be 100% recycled, truly green and pollution-free.
Energy saving:All adopt high-efficiency and energy-saving walls, with good heat preservation, heat insulation and sound insulation effects, which can reach the energy-saving standard of 50%.
Gb/t 12754-2006 color coated steel plate and strip
Gb/t 13448-2006 test methods for color coated steel plates and strips
GB 50205-2001 code for acceptance of construction quality of steel structures
Color steel features
1.Light weight : 10-14 kg / m2, equivalent to 1/30 of the brick wall
2.Thermal insulation : core material thermal conductivity: λ<= 0.041w/mk.
3.High strength : it can be used as the load-bearing, bending resistance and compression resistance of the ceiling enclosure plate; General houses do not use beams and columns.
4.Bright color : no surface decoration is required, and the preservation period of the anticorrosive coating of the color galvanized steel plate is 10-15 years.
5.Flexible and fast installation : the construction period can be shortened by more than 40%.
6.Oxygen index : (OI) 32.0 (provincial fire product quality inspection station).
The company has a long-term inventory of 10000 tons. The indoor warehouse and loading are fast and convenient. It mainly sells angle steel, channel steel, I-beam, H-beam, square pipe, round pipe, plate and processing, as well as rebar, coil, spiral, high-speed wire, etc. of major steel mills.