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The most comprehensive detailed knowledge of color steel plates

Views:2     Author:Site Editor     Publish Time: 2021-12-30      Origin:Site

Color steel plate refers to color coated steel plate, which is a kind of steel plate with organic coating. Color steel plates are divided into buy Color decorative steel coil - Decoulifesingle plates, color steel composite plates, floor decks and so on. It is widely used in the walls and roofs of large public buildings, public factories, prefabricated houses, and integrated houses.

Color steel plate features

⊙Light weight: 10-14 kg/m2, equivalent to 1/30 of a brick wall.

⊙Insulation: Thermal conductivity of core material: λ<=0.023-0.041w/mk. ⊙High strength: it can be used as a load-bearing board for ceiling enclosure structure, which is resistant to bending and compression; beams and columns are not used in general houses.

⊙Bright color: no surface decoration is required, and the anticorrosive layer of the color galvanized steel plate has a retention period of 10-25 years.

⊙ Flexible and quick installation: The construction period can be shortened by more than 40%.

⊙ Oxygen Index: (OI) 32.0 (National Fire Products Quality Inspection Station)

Development path of color decorative steel coil

In the late 1980s, my country began to build color steel plate units. Most of these units were built in steel plants and joint ventures. The color steel plate process equipment was basically imported from abroad. By 2000, domestically produced color steel plates reached 1.73 million tons, and there was overcapacity. The large state-owned iron and steel enterprises have relatively high unit production capacity and equipment levels. They have successively built color steel plate units with an annual production capacity of 120,000 to 170,000 tons using foreign technology. At the same time, the production of color steel plates invested by many private enterprises mostly uses domestic equipment, which has a small production capacity, but is launched quickly and has low investment. The products are mainly for building materials and decoration industries. In addition, foreign and Taiwanese capital have also landed on the construction of color-coating units, but most of them are concentrated in coastal areas. Since 1999, with the prosperity of the color-coated sheet market, the production and consumption of color-coated sheets have entered a period of rapid growth. From 2000 to 2004, production volume increased at an average rate of 39.0%. As of 2005, the national production capacity of color-coated sheets was more than 8 million tons/year, and a number of color-coated units were under construction, with a total national production capacity of more than 9 million tons/year.

The composition and application of color steel plate

Color steel plate substrates can be divided into cold-rolled substrates, hot-dip galvanized substrates, and electro-galvanized substrates.

The coating types of color steel plate can be divided into: polyester, silicon modified polyester, vinylidene fluoride, plastisol.

The surface condition of color steel plates can be divided into coated plates, embossed plates, and printed plates.

The color of the color steel plate can be divided into many types according to user requirements, such as orange, cream, deep sky blue, sea blue, crimson, brick red, ivory, porcelain blue, etc.

Color-coated steel sheet market uses are mainly divided into three parts: construction, home appliances and transportation, of which the construction sector accounts for the largest proportion, followed by the home appliance industry, and the transportation industry accounts for only a small part. Color steel plates for construction generally use hot-dip galvanized steel and hot-dip galvanized steel as substrates, which are mainly processed into corrugated boards or composite sandwich panels with polyurethane, which are used for the construction of steel structure factories, airports, warehouses, freezers and other industrial and commercial industries. Building roofs, walls, doors. Home appliance color plates generally use electro-galvanized and cold plates as substrates, which are used to produce refrigerators and large-scale air-conditioning systems, freezers, toasters, furniture, etc.

The transportation industry generally uses electro-galvanized and cold plates as substrates, which are mainly used for oil pans, automotive interior parts, etc.

The main type of color steel plate

Color steel plate specifications: 470 type, 600 type, 760 type, 820 type, 840 type, 900 type, 950 type, 870 type, 980 type, 1000 type, 1150 type, 1200 type, etc.

[Color] Conventional colors are sea blue, white gray, crimson, and other colors need to be customized.

[Structure] The sandwich panel is made of color-coated panels, with foam, rock wool, glass wool, polyurethane, etc. in the middle, which are processed and bonded together by imported combined glue.

[Material] Color-coated roll/color-coated board, foam, rock wool, polyurethane, etc.

[Specifications] Color-coated board thickness 0.18-1.2 (mm), sandwich core 50-200 (mm)

[Compressive strength]Bending and compressive

[Fire rating] Class A B1, B2, B3 (non-combustible, non-combustible, flame-retardant, flammable)

Specifications and performance of color steel plate

Color steel sandwich panels, often used tongue-and-groove insertion, it has the advantages of convenient installation, time-saving, material-saving, good flatness, high strength, etc., especially suitable for suspended ceilings and partition systems.

Thickness (mm): 50-250;

Length (mm): Due to continuous molding production, the board length can be determined according to user needs;

Width (mm): 950 1000 1150 (1200)

Core material performance:

A. Polystyrene Bulk density: ≥15kg/m3 Thermal conductivity ≤0.036W/m.K Maximum operating temperature: about 100℃.

B, rock wool Bulk density: ≥110kg/m3 Thermal conductivity: ≤0.043W/m.K Maximum operating temperature: about 500℃

A.Non-combustibility: Class B1

B.Non-combustibility: Class A

Type 950 corrugated color steel sandwich panel integrates corrugated board and sandwich panel, which is three times stronger than ordinary flat color steel sandwich panel. It uses hidden self-drilling screws to connect with the roof truss, and does not damage the exposed part of the color coated panel. , Extend the life of the color steel sandwich panel; The connection between the panel and the panel adopts the buckle cap type, which is convenient for construction, improves the efficiency, and the biggest feature is not easy to seepage. 950 rock wool thermal insulation color steel sandwich panel The core material is made of basalt and other natural ores as the main raw materials, melted into fibers at high temperature, added with appropriate amount of binder, and solidified. This product is suitable for thermal insulation and sound insulation of industrial equipment, buildings, ships, etc., as well as for clean rooms, ceilings, partitions, etc. of explosion-proof and fire-proof workshops.

The bonding strength of the 1000 type PU polyurethane color steel sandwich panel is not less than 0.09MPa, the burning performance of the sandwich panel reaches B1 level, and the deflection of the sandwich panel is Lo/200 (Lo is the distance between the supports) When the flexural bearing capacity of the sandwich panel is not less than 0.5Kn/m, the polyurethane color steel sandwich panel is currently the best integrated thermal insulation and decoration panel. 1000 type polyurethane edge-sealing glass wool and rock wool sandwich panels are made of high-quality color-coated steel plate as the surface material, continuous cotton fiber rock wool and glass wool as the core material, and high-density rigid foamed polyurethane is the tongue-and-groove filling. High-pressure foaming and curing, automatic dense cloth cotton and compounded by super-long precision double track control molding, its fireproof effect is better than pure polyurethane sandwich panel. Polyurethane edge-sealed glass wool and rock wool sandwich panels are the best fire-proof, heat-preserving and decorative integrated panels on the market.

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