Tianjin Huirun Steel Development Co. Ltd. (HSDC) - is the only leading enterprise in China with a national level expert research and development team to produce high-quality steel,Who has Li Heng photovoltaic factory, Kaisheng pipe factory, Jingyong slitting processing plant, etc. HSDC is the only designated distributor of China Iron and Steel Research Group.HSDC locates in Tianjin which is the center of steel industry and the largest seaport in North China.The location gives us a facility in sufficient raw material as well as convenient transportation.
Why Choose Us
Our Factory
Tianjin Huirun Steel Development Co. Ltd. (HSDC) - is the only leading enterprise in China with a national level expert research and development team to produce high-quality steel,Who has Li Heng photovoltaic factory, Kaisheng pipe factory, Jingyong slitting processing plant, etc. HSDC is the only designated distributor of China Iron and Steel Research Group.
Our Product
We specializes in various kinds of steel concerned building materials. Such as Galvanized round pipe, square/rectangular/Irregular pipe, Scaffold pipe, various steel coils/stripe/plate, PC wire, PC strands, rebar, photovoltaic bracket, Angle steel, U/H/C-shaped steel and so on.
Quality Assurance
Our company cooperates with major steel mills and has advanced production lines for sheet and pipe materials, complete testing equipment, and a strict quality assurance system.
Our Services
With an experienced,dynamic and high efficient team, our products are well-received worldwide.The company follows the faith of"Operation of Good Faith and Assurance of High Quality"and devotes to providing the best products and first-class services to customers both at home and abroad.
People use it as material for heat-insulation for its thermal reflectivity as high as twice the galvanized steel sheet.
Cold coils are made from hot-rolled coils as raw materials and rolled at room temperature below the recrystallization temperature.
Zinc Magnesium Aluminum Coated Steel Coil
Galvanized aluminum magnesium coil is a new type of high corrosion resistance coating coil, the coating composition is mainly zinc, galvanized aluminum magnesium coil by zinc plus 1.5%-11% aluminum, 1.5%-3% magnesium and trace silicon composition.
Application Range: Automobile, Bridges, Buildings Machinery, Pressure Vessels Industry Shipbuilding, Engineering, Construction,Widely used in roofing sheet,window-shades,car ceiling,the shell of the car,air conditioner,outer shell of water machine,steel structure etc
Hot rolled steel coils use slabs (mainly continuous casting slabs) as raw materials, and after heating, they are processed by rough rolling units. Due to the high strength, good toughness, easy processing, and good weldability of hot rolled steel products, they are widely used in manufacturing industries such as ships, automobiles, bridges, construction, machinery, and pressure vessels.
Hot Dipped Galvanized Steel Coil
Galvanized steel coil is mainly produced by continuous galvanizing process, that is, the rolled steel plate is continuously dipped in the plating tank with melted zinc to make galvanized steel plate. Alloyed galvanized steel sheet. This steel plate is also made by hot dipping, but immediately after the tank is heated to about 500 ° C, so that it generates an alloy coating of zinc and iron.
Color-painted steel coil are made by coating the surface of galvanized steel sheets or galvanized steel sheets with a layer of special paint. This process enhances their resistance to corrosion, weathering and mechanical damage, while also improving their aesthetics.Steel coils commonly feature polymer coating in various colours and matte, lustre or decorative natural finish. The coating protects it from atmospheric corrosion while giving it more strength and durability. Also known as pre-painted steel, coated steel coils is made by putting a steel sheet through surface pre-treatment, then coating for one or more layers, and finally baking and cooling.Color-coated steel coils are widely used in construction, automobile, electrical appliances, furniture manufacturing and other industries.
Advantages of Color-Painted Steel Coil
Broad Applicability
The colour-painted steel coil is light in weight and has high mechanical properties. Colour coated steel, for example, weighs roughly 6-14 kg per square metre, which is only 1/30 of the weight of a brick wall of the same area. Its mechanical properties, on the other hand, can meet the safety standards. As a result, it's common in construction, transportation, and other fields. That is to say, there is a market opportunity.
Simple to Process
Because of their formality, colour-painted steel coil are simple to shear or shape for many uses. It's possible that all you'll need is fewer equipment and a straightforward operation. While it is less expensive than finished goods. It will significantly reduce your investment costs for huge projects.
Requires less maintenance
Prepainted steel coil and products made of colour-coated steel require less maintenance due to the superior corrosion resistance of galvanised steel or galvaume steel. You will never have to worry about after-sales issues as an investment. It is a cost-effective option for users.
Environmentally friendly
Colour-painted steel coil is environmentally friendly. For example, there is no need to be concerned if colour coated steel is used as a building material because it is environmentally friendly. Even the colour-coated steel that has been used can be reused.
Types of Color-Painted Steel Coil Coatings
Polyester (PE)
Based on polyether, steel coils with this coating are resistant to high air temperature and corrosion. They feature colour stability, plasticity and longevity and therefore are used in roofing and wall structures, particularly for industrial buildings. These are available in different colours. Wide range of colours and brightness make it perfect for applications like interior and exterior construction materials, assembling metals, and partitions.
Polyester matt (PEMA)
PEMA has a smooth and matte surface with micro-roughness and is based on polyether. It has a longer life than PE and sports excellent colour stability with mechanical resistance. This steel can keep its property in any climate and can copy natural materials.
PVDF
PVDF is a blend of polyvinyl fluoride (80%) and acryl (20%). It shows the highest resistance to non-mechanical environmental exposure. The compound is used for wall cladding and roofing as it features excellent resistance to water, snow, acids and alkali.
Plastisol (PVC)
This polymer is made of polyvinyl chloride and plasticisers. It possesses a rather thick coating (0.2 mm) which contributes to good mechanical and weather resistance. However, it has relatively poor heat resistance and colour stability.
Polyurethane (PU)
This coating is made of polyurethane modified with polyamide and acryl. It has improved resistance to ultraviolet radiation and weather exposure, high strength and longevity. Polyurethane is highly resistant to many acids and chemicals typical in an industrial environment.
SMP, or silicone modified polyester
SMP paint systems are a combination of polyester and silicon intermediates. Silicon contributes to improving the gloss retention and weather resistance of the polyester coating. SMP-coated material is more difficult to scratch and resistant to chalk and fade.
One significant application of color-painted steel coil is in the construction industry, where it is used for roofing, wall cladding, and architectural elements. The ability to choose from a wide spectrum of colors and finishes allows architects and designers to create visually stunning buildings while ensuring long-lasting protection against environmental factors such as UV radiation, moisture, and corrosion. Additionally, the formability of color-painted steel coil enables the creation of complex shapes and designs, adding a decorative touch to modern structures.
In the automotive sector, color-painted steel coil finds application in manufacturing vehicle panels, interior trim components, and body accessories. The durable paint coatings not only enhance the aesthetics of automobiles but also provide protection against scratches, abrasion, and weathering, maintaining a fresh and vibrant appearance over time.
Furthermore, color-painted steel coil is utilized in the production of household appliances such as refrigerators, washing machines, and air conditioners. The smooth, uniform finish of the coil enhances the visual appeal of appliances while offering resistance to stains, fingerprints, and chemicals, contributing to both functionality and aesthetics in residential settings.
Moreover, the packaging industry benefits from the versatility of color-painted steel coil in manufacturing containers, cans, and packaging materials. The protective coatings on the steel ensure product integrity, preventing corrosion and contamination while allowing for customized branding and decorative finishes to attract consumers.
In conclusion, color-painted steel coil serves a diverse range of applications across industries such as construction, automotive, appliances, and packaging, offering a combination of aesthetic appeal, durability, and functionality. Its versatility and protective properties make it a preferred choice for projects that demand both visual impact and performance, highlighting the broad spectrum of uses for this innovative material.
The Process of Color-Painted Steel Coil
Stage 1- Cleaning the strip
The cold rolled coil is cleaned of any impurities and oil to ensure uniformity and that nothing gets trapped between the layers that could have an adverse effect on the finished product. It also ensures the subsequent layers stick fast.
Cleaning can be done in several ways such as brushing, a chemical bath or alkaline dip, a water bath etc. It is then rinsed to remove any cleaning impurities and residues.
Stage 2- Zinc alloy application
This layer can be 100% zinc but is often made up of zinc & aluminium and the exact proportion of each is unique depending on the supplier and the product. Some products also include magnesium in this alloy for additional properties.
Typically, this metallic coating is added to the steel before the coil arrives at the paint coating plant but it can be added as a pre-process on the same line before the subsequent paint layers are added.
Stage 3- Surface treatment
This chemical conversion coating stage is critical to ensuring the primer and the paint are securely bonded with the steel. The chemicals used, such as alkaline oxides, change the surface properties of the previous zinc layer.
Stage 4- Rinsing & drying
Although some surface treatments don't require a rinsing stage, for others, this is done to ensure that the material presented for primer application is free from any chemical residues and is fully dry to ensure secure bonding of the subsequent layers.
Stage 5- Primer application
The primer coating may be added to one or both sides of the steel and prepares the steel sheet to ensure the finished paint layer sticks fast.
Stage 6- Drying, curing & cooling
This ensures the primer is fully hardened, clean, dry and the correct temperature before the application of the next layer to ensure optimum properties are upheld.
Stage 7- Finished paint coating and backing coat
Typically, the front and the back of the steel have different coatings as they each meet different end user needs.
Whilst some processes can apply the layers at the same time and cure, cool and dry them at the same time, other processes apply them separately and dry, cure and cool in between each layer.
This is the final painting stage in a typical two coat paint system.
Stage 7+ Optional clear protective coat
For a three coat paint system a clear protective coat is added on top of the final layer of paint. It is only added to some premium products and gives additional protective benefits to the product, particularly for uv.
Stage 8- Drying, curing & cooling
This ensures the paint is fully hardened, clean and dry, ready for rerolling and then to be shipped to the customer.
The addition of a surface pattern i.E. Embossing, can occur at this stage, just before the paint is fully cooled and hardened.
Difference Between Color-Painted Steel Coil and Hot Dip Galvanized Steel Coil
Different areas of use
Hot Dipped Galvalume Steel Coil Is a Steel Sheet That Is Immersed in a Molten Zinc Solution to Form an Alloy Layer of Zinc and Steel Matrix to Improve the Corrosion Resistance of the Steel Sheet. Therefore, Galvanized Sheet Is Mainly Used to Make Corrosion-Resistant Building Materials, Vehicles, Electrical Equipment, Household Appliances and Other Products with High Rust Resistance, Corrosion Resistance and Durability.
Coated Steel Coil, On the Other Hand, Is Surface Coloured on the Surface of the Substrate and Can Be Sprayed in Different Colours According to Customer Demand, Which Makes the Steel Plate Have Good Decorative Properties and Is Suitable for Building Materials, Furniture, Electrical Appliances, Transportation Tools and Other Fields.
The surface treatment is different
The Surface of Hot Dip Galvanized Steel Sheet Is Covered by a Pure Zinc Layer to Increase the Corrosion Resistance of the Substrate. The Bottom of the Galvanized Sheet Is a Steel Plate, And the Thickness of the Surface Coating Is Generally 5-15μm in Order to Manufacture Products with High Corrosion Resistance.
Coated Steel Coils, On the Other Hand, Is Coated on the Basis of Galvanized Sheet. The Surface Treatment of Coated Sheets Uses a Series of Detailed Processes, Including Pickling, Descaling, Passivation, Neutralization, Cleaning, Drying, And Painting to Ensure the Durability and Adhesion of the Coating.
Different corrosion resistance
As the Surface of the Hot Dipped Galvanized Steel Sheet Is a Pure Zinc Layer, It Has Good Corrosion Resistance, And Can Effectively Extend the Service Life. The Coated Steel Coils Surface Coating Is Different, It Is Only the Surface of the Substrate Baking Paint Treatment, Coating Durability and Anti-Corrosion Ability Are Weak.
Different aesthetics
Hot Dipped Galvanized Coil Is Only Silver, Commonly Used in Some Products That Do Not Need Colour, And Can Not Meet the Demand for Visual Effects. And Coated Steel Coils in the Substrate Surface Is Covered with a Very Rich Colour Coating, Colour Single or Composite, To Meet the Aesthetic Requirements of a Variety of Use Scenarios.
How to Properly Store and Maintain Color-Painted Steel Coil
Storage of color-painted steel coil
Temperature and humidity control
Color-painted steel coil need to be kept in a relatively stable environment during storage to avoid problems such as moisture and deformation. Color-painted steel coil usually need to be placed in an indoor environment, and the relative humidity needs to be controlled below 60% and the temperature between 5℃ and 35℃.
Avoid contact with chemicals
Color-painted steel coil need to avoid contact with chemicals during storage to prevent chemical reactions from affecting their performance. Therefore, when storing color-painted steel coil, it is necessary to avoid contact with acids, alkalis, organic solvents and other substances.
Avoid collisions and scratches
Color-painted steel coil need to avoid collisions and scratches during transportation and storage to avoid damaging the surface coating. During the transportation process, you can use professional lifting equipment or protective pads and other auxiliary tools, and you also need to avoid stacking too high.
Pay attention to ventilation and fire prevention
Color-painted steel coil require ventilation and fire protection during storage. Therefore, adequate ventilation facilities need to be installed in the warehouse, and smoking and open flames are strictly prohibited to prevent fires.
Maintenance of ppgi coils
Cleaning
During the use of color-painted steel coil, problems such as pollution and dust may occur due to environmental reasons, affecting their appearance and performance. Therefore, regular cleaning of the surface of color-painted steel coil is a necessary maintenance measure. When cleaning, you can use warm water and neutral detergent, and avoid using chemicals such as strong acids, alkalis, or organic solvents for cleaning.
Coating repair
During the use of color-painted steel coil, the coating may be damaged or peeled off due to various reasons. At this time, the coating needs to be repaired to avoid affecting its performance and life. Coating repair can be carried out using professional repair materials and tools and following the operating procedures provided by the manufacturer.
Anti-rust treatment
Color-painted steel coil are susceptible to problems such as oxidation and corrosion during use. Therefore, regular anti-rust treatment is a necessary maintenance measure. Anti-rust treatment can be carried out by spraying or painting with anti-rust paint.
Regular inspection
Regular inspection of the surface condition and coating condition of color-painted steel coil is a necessary maintenance measure. During inspection, visual inspection, hand touch, etc. Can be used to observe and judge the coating condition. If problems with the coating are found, they need to be repaired or replaced in time.
Avoid collision with hard objects
When using prepainted color-painted steel coil, you need to avoid hitting the surface with hard objects to avoid damage. During use, professional accessories and tools can be used for installation and transportation, and relevant operating procedures need to be followed.
FAQ
Q: What is a coated steel?
Q: What is color coated steel coil?
Q: Where is coil coating used?
Q: What is coating of steel?
Q: What is the difference between coated steel and stainless steel?
Q: What is the process of coated steel?
Q: What are the uses of colour coated coil?
Q: How to tell if steel is coated?
Q: Is coated steel safe?
Q: Why is steel coated blue?
Q: How long does coated steel last?
Q: Is coated steel rust proof?
Q: How do you clean coated steel?
Q: How do you remove coating from steel?
Q: Can steel coils rust?
Q: How do you store steel coils?
Q: What causes coil break in steel?
Q: How are steel coils hot?
Q: How long do steel coils take to cool?
Q: What is the coiling temperature of steel?
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