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The water leakage caused by the material characteristics of the color steel sheet roof leakage.
1. The thermal conductivity of the low price color corrugated steel sheet itself is large. When the external temperature changes greatly, the temperature difference varies greatly due to the temperature change, and the color steel plate shrinks and deforms due to the temperature change, resulting in a large displacement at the interface. There is a hidden danger of water leakage.
2. In the steel structure system, due to the temperature change and the external force such as wind load and snow load, the steel structure is prone to elastic deformation, and displacement occurs at the joint to cause water leakage.
3. Special parts, due to the use of different materials, such as the connection between the parapet wall and the gutter, the roof lighting belt and other parts, due to the stress changes are not synchronized, easy to cause hidden water leakage.

The following describes the cold rolled steel coil factory supplier to introduce the scope of use of cold rolled rolls to facilitate customers to better understand our products.

The cold rolled coil products produced by the cold rolled steel coil factory supplier are made of various fine processes and have flat plate shape, bright appearance, high elongation rate, uniform width and width, no heavy skin and cracks, and the thickness tolerance is not more than 0.02mm.

Cold rolled coils are commonly used in the corrosion-resistant parts of the automotive industry. They are used in the commercial industry for the storage and transportation of packaging utensils and materials. They are used in the construction industry for the manufacture of anti-corrosion industries and roof grills, civil construction roof panels, etc. In the fishery, it is used as a cold processing tool for food storage and transportation, and meat products.

In addition, in the light industry of tools, pipe materials, steel, stampings, and fitness equipment, furniture, leisure goods, etc., CRC is also very useful, it can be said that the use is very common.

Fasteners: Due to the long life of roof slabs and wall panels made of hot sale color-coated corrugated roofing sheet, the life of fasteners should be consistent with color coated panels and accessories. In contrast, fasteners account for a small proportion of construction investment, and the use of poor fasteners does not benefit. Therefore, the important considerations for fasteners are the long-term performance and aesthetics of the building.

Color coated corrugated roofing plate fasteners have a wide selection range, as well as self-tapping and self-drilling types made of various metal materials and fasteners such as carbon-free polymer gasket materials to meet the steel plate fastening requirements. Fastener materials include carbon steel, 300 series and 400 series stainless steel and aluminum.

With the development of hot rolling technology, the quality of wholesale hot rolled steel coil is continuously improved, and the thickness is gradually thinned. The hot rolled coil is used as raw material to produce hot rolled galvanized coil instead of the traditional single coil galvanizing, which not only broadens the hot rolling galvanizing. The use of the board, but also squeezed the market share of hot-dip galvanized coil with the cold-rolled coil as the substrate. Internationally, many people wholesale hot rolled steel coil.

With the advancement of hot rolling technology, especially the thin slab continuous casting and rolling (CSP) technology, the thickness of wholesale hot rolled steel coil is getting thinner and thinner. In recent years, a number of CSP production lines have been built in China, such as Zhugang, Handan Iron and Steel, Baotou Steel, Tangshan Iron and Steel, etc. Maanshan Iron and Steel Co., Ltd. are currently under construction, and the thinnest rolling specifications can reach 0.8mm. The large number of applications of CSP technology objectively provides thinner hot rolled raw materials with better mechanical properties and specifications for the hot rolled plate.

If you want to wholesale hot rolled coil, please go to our official website to contact customer service staff for help.

Although the history of electroplating has been more than 100 years old, it has been widely used in industrial fields, such as high quality prepainted color galvanized coil, existing galvanized steel coils, etc., which have continued to this day since the 1920s.

In electroplating history, galvanizing was one of the first coatings to be studied. Research work on electro galvanizing began in 1807 to 1827, and in 1829 some people used it on nails. In 1852, the United Kingdom issued the first patent for galvanizing, and in 1855 proposed a patent for silver plating. However, until 1915, tempering galvanizing was only in the real stage before the industry used a zinc sulfate bath. In 1921, the silver galvanizing process invented by Blum made a major breakthrough. Since then, the galvanizing process of smelting has two practical values. The composition and content range of the solution is very similar to the current standard high concentration cyanide galvanizing process.

In the 1930s and 1940s, electroplating workers conducted extensive research on galvanizing. The focus of the study was to improve the glossy appearance of the coating. Furfural, heterocyclic compounds, and sulfides are used as brighteners. In the late 1930s, a bright galvanizing process was introduced to make the galvanization of the sails more perfect and widely used in the production of structural parts. The high quality prepainted color galvanized coil has a wide range of processes, high work efficiency, good dispersion, deep coating, fine crystal structure, beautiful appearance and good corrosion resistance. It has occupied a dominant position in the late 1950s and is still abroad. widely used. According to reports, in the United States in 1975, the amount of sodium sulfate used for galvanizing reached 3 million pounds.

Things always have two sides. Although smelting galvanizing has the above advantages, since sodium is a dangerous drug, with the development of industry, the scale of electroplating is expanding, and oxidized electroplating sewage and exhaust gas cause serious pollution to the human body. The environment has finally caught people's attention. In order to solve the pollution problem of Peihua electroplating, electroplating workers have conducted in-depth and extensive research on the silver-free electroplating process. The human and material resources invested are far more than any period in the past, and academic research and practical problems of solving production are closely combined. Many types of airless galvanizing processes have been proposed to facilitate the development of the entire plating process.

The history of cyanide-free galvanizing is only about 15 years old, and it has been used in industrial production since the early 1960s. According to authoritative sources, before 1964, only 3% of the world's structural parts were galvanized, and by 1974 it had increased to 20%. It can be seen that the development speed is very fast.

Among the color-coated products, China aluminum zinc steel coil and galvanized color steel plates have been highly praised by the market. Color coated rolls have also become synonymous with high-end products. So, is there a wholesale of color coated rolls in China? The answer is yes.

Shandong HENGZE New Material Co., Ltd., a provider of modern steel roofing materials in Central China, specializes in low-cost PPGI prepainted galvanized steel coil and has the following three advantages:

1. Excellent molding performance, which can meet the requirements of roll stamping, bending and other forms of processing.

2. Good heat resistance. Ordinary hot-dip galvanizing products usually use a temperature not exceeding 230°C and will change color at 250°C. The galvanized coil can be used for a long time at 315°C.

3. High reflectivity. The ability to reflect heat and light is twice that of hot-dip galvanized steel, with a reflectance greater than 0.75, which is better than the EPA Energy Star's 0.65, making it an ideal building material for energy savings.

The water leakage caused by the material characteristics of the color steel sheet roof leakage.

  1. The thermal conductivity of the low price color corrugated steel sheet itself is large. When the external temperature changes greatly, the temperature difference varies greatly due to the temperature change, and the color steel plate shrinks and deforms due to the temperature change, resulting in a large displacement at the interface. There is a hidden danger of water leakage.
  2. In the steel structure system, due to the temperature change and the external force such as wind load and snow load, the steel structure is prone to elastic deformation, and displacement occurs at the joint to cause water leakage.
  3. Special parts, due to the use of different materials, such as the connection between the parapet wall and the gutter, the roof lighting belt and other parts, due to the stress changes are not synchronized, easy to cause hidden water leakage.

Cold rolled steel coil factory in stock is a type of steel product manufactured from the cold rolling process. These have significantly different types of characters compared to the 'black steels' or hot rolled coils. Cold rolled coils have better surface quality, thinner and with more precise size, and also have good mechanical property and excellent formability.

Cold Roll Steel in this category is generally used in the formation process. This material has better formability, weldability, and roughness quality. These white steels are also used for applications in the galvanizing (zinc-coating) and enamelware (porcelain-coating) industry and are used as basic material for making tin mill black plate food cans in the food beverages industry.

Cold Rolled Steel Coil Applications:
Cold Roll Steel is generally used in Racking, Shelving, Water Heaters, Electrical Motors, Commercial Doors, Drums, Major Appliances Pools and Lighting Ballasts etc.

The low cost Galvanized Corrugated Steel Sheet is a carbon steel sheet coated with zinc on both sides by the continuous hot-dip process. Immediately as the strip exits the coating bath, the molten zinc coating is subjected to an in-line heat treatment that converts the entire coating to a zinc-iron alloy. (The iron diffuses from the steel into the coating.) The galvannealed surface has a non-spangled matte finish, a finish very different than the highly metallic appearance of the galvanized coating. At times, the galvannealed coating may appear similar to uncoated cold rolled steel. One of the primary attributes of the galvannealed coating is that the surface accepts paint very readily. It can be painted without the application of a pretreatment, although a pretreatment will enhance the performance after painting.

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