A color-coated steel sheet refers to a steel sheet coated with colored paint or film on the surface of substrates such as galvanized steel sheet, galvalume steel sheet, or cold-rolled steel sheet. On the one hand, it can protect the substrate metal, and on the other hand, it can act as decoration. There are three types of coating layer: organic coating, inorganic coating, and composite coating, which develops fastest.

Introduction

1936

Color-coated board was born in the United States.

It was firstly used in construction as blinds and rain shields. From the beginning, the raw materials were single sheets, or 2-inch wide continuous coated steel coils, produced by Amco Steel Corp and Heart Engineering.

1949

Process improvements in the United States

1954

Color-coated plates produced in Japan

1961

Britain also began to produce color-coated sheets

Subsequently, developed countries such as Germany and Sweden also began mass production of color-coated steel plates, mainly for construction purposes.

1969

As Japan is located in an earthquake zone, light-weight, earthquake-resistant color-coated steel buildings are more popular. The proportion of color-coated steel used in buildings accounts for about 76% of domestic consumption, and the output of color-coated steel plates has grown steadily.

The 1970s

Asian countries started production

Some Asian countries: South Korea, the Philippines, and Taiwan began to build their continuous color-coated steel plate production lines.

The 1980s

China introduced production equipment

In the 1980s, emerging economies represented by China began to research and develop or introduce color-coated steel production equipments.

The 1990s

India and West Asian countries also began to produce color coated steel sheets

now

Life is inseparable from color-coated boards

As a new type of building material, the color-coated steel plate has the characteristics of long life, land saving, and recyclability. It is widely applied in public buildings and industrial plant enclosures.

01

According to the classification of substrates which are used for organic coated steel plates are: cold-rolled sheet, hot-dip galvanized sheet, electro-galvanized sheet, alloyed sheet, galvalume sheet, electro-galvanized alloy sheet, tin-plated sheet, chrome-plated sheet and aluminum sheet.
In recent years, with the popularization and application of new energy sources such as solar energy and wind energy and increasingly stringent environmental protection requirements by severe corrosive environments, alloy metals such as aluminum-zinc alloy and zinc-aluminum-magnesium alloy have been made one after another aiming to increase the corrosion resistance of the metal layer.

02

Shinmade plans to launch a new project of aluminum-zinc-magnesium high-corrosion-resistant coated steel sheet. The AZM steel sheet is a new generation of high-corrosion-resistant coated steel sheets. The metal element content in the coating is: 53% aluminum, 43% zinc, 2 % Magnesium, 1.5% silicon and other elements. As the main material of the roof panels and facades of the steel structure system, AZM steel product replaces the first and second-generation galvanized steel because of its corrosion performance and long service life.
The AZM coating has characteristics of corrosion resistance. The metal elements in the alloy coating work together to reduce the consumption rate of the surface coating. At the same time, the corrosion resistance of the cut section of the coated steel is also improved. In most cases, its performance is better than that of the galvalume steel sheet if with the same coating amount.

The zinc in the alloy coating provides sacrificial protection, and aluminum provides passivation protection. The material of magnesium activates the coating layer, reduces the consumption speed of the coating layer, and forms an insulating protective layer on the cutting edge and cross-section. The element zinc also protects the metal coating layers, which effectively improves the corrosion resistance of the coated steel products.
The span-life of the aluminum-zinc-magnesium steel plate in the general environment is more than 30 years.

03

The development of human civilization puts forward new requirements to the construction industry. Only by the continuous pursuit of architecture and beauty can we make color-coated products perfect.
The Shinmade aluminum-zinc-magnesium high-corrosion-resistant coated steel sheet project is now in progress. After more than 40 years of development, Shinmade has set up its own Research Institute on cold-rolled steel, coated steel and construction steel products. Besides, it also established a team of senior experts to promote collaboration of production, learning, and research for coating products.
As for the research on the color of coated panels, we have built a color-matching center with the world's top painters to create a professional color management system, provide customers with customized and functional coating products of which they can choose the color by themselves.