Prepainted Rolled steel coil for Construction roofing use
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 30000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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Structure of Prepainted Rolled steel Coil for Construction Roofing
Description of Prepainted Rolled steel Coil for Construction Roofing
Prepainted Rolled steel Coil is a kind of coated steel coil/sheet. With the cold rolled steel of different strength and thickness as substrate, it is produced through applying Al-Zn coat on both faces by hot dip process. In its coating, Al accounts for about 55%, Si 1.6%, while the remaining is Zn. Aluminum zinc coils enjoys both the physical protective feature and durability of Al and the electrochemical protective property of Zn. And its surface has bright silver color and regular embossed-like figure, which are highly decorative.
Main Feature of Prepainted Rolled steel Coil for Construction Roofing
1.Corrosion resistance: It mainly depends on the aluminum protection. When the zinc being worn, the aluminum will form a dense layer of aluminum oxide, resist corrosion material to prevent further corrosion inside.
2. Heat resistance: Aluminum zinc alloy steel sheet has excellent heat resistance, can withstand high temperatures over 300 centigrade, and is similar with aluminized steel high temperature oxidation resistance. It often used in chimney pipes, ovens, fluorescent lighting device and the device cover.
3. Heat reflective: Galvanized steel plate heat-reflective high rate is twice as galvanized steel, often used to make insulation materials.
4. Economy: Because density of 55% AL-Zn is smaller than the density of Zn, so in the same weight and thickness of Galvanized zinc layer, aluminum-zinc steel plate is larger area more than 3% of galvanized steel sheet.
Applications of Prepainted Rolled steel Coil for Construction Roofing
1. Construction and building: roofing; ventilating duct; handrail; partition panel;etc.
2. Electric appliance: refrigerator; washing machine; refrigerator; DVD;etc.
3.Transportation: oil tank; road sign; etc.
4.Agriculture:barn; etc.
5.Others:vending machine; game machine; etc.
Specifications of Rolled steel Coil for Construction Roofing
Product | Prepainted Rolled steel Coil for Construction Roofing |
Material Grade | SGCC / SGCH / DX51D+AZ, etc |
Thickness | 0.2-3.0mm |
Width | 600-1500mm |
Tolerance | Thickness: +/-0.02mm , Width:+/-2mm |
Zinc-coating | AZ40-150g/m2 |
Technique | Raw material: Hot rolled steel coil --> Cold rolled_>hot dipped galvalume |
Surface | Dried, Chromated, Unoiled |
Spangle | Regular spangle , small spangle, zero spangle |
ID | 508MM |
Coil weight | 10MT max |
Export package | Cardboard inner sleeves, Waterproof paper, galvanized steel covered and steel strip packed |
FAQ of Prepainted Rolled steel Coil for Construction Roofing
We have organized several common questions for our clients，may help you sincerely：
1. What is the minimum order quantity ?
Our MOQ is 50mt for each size. And we will consider to give more discount if you make big order like 1000 tons and more. Further more, the more appropriate payment term your offer the better price we can provide.
2. How long can we receive the product after purchase?
Usually within thirty working days after receiving buyer’s advance payment or LC. We will arrange the factory manufacturing as soon as possible. The cargo readiness usually takes 15-25 days, but the shipment will depend on the vessel situation.
3. How to guarantee the quality of the products？
We have established the international advanced quality management system，every link from raw material to final product we have strict quality test；We resolutely put an end to unqualified products flowing into the market. At the same time, we will provide necessary follow-up service assurance.
- Q:Can we construct a barn using steel and will it be a durable one?
- sure , steel barns are all over the place...the common brand of steel buildings around here are Butler Buildings...
- Q:What are the common thickness tolerances for steel coils?
- The common thickness tolerances for steel coils usually range from +/- 0.001 to +/- 0.005 inches, depending on the specific industry standards and customer requirements.
- Q:What are the different coating options for steel coils?
- There are several coating options available for steel coils, each serving different purposes and providing unique benefits. Some of the commonly used coating options for steel coils include: 1. Galvanized Coating: This coating involves immersing the steel coils in a bath of molten zinc, creating a layer of zinc on the surface. Galvanized coating provides excellent corrosion resistance and protects the steel from rusting. It is commonly used in applications where the steel coils are exposed to harsh environments or moisture. 2. Galvannealed Coating: This coating is a combination of galvanizing and annealing processes. The steel coils are first galvanized and then annealed to create a layer of zinc-iron alloy on the surface. Galvannealed coating offers enhanced paintability and weldability while providing good corrosion resistance. 3. Aluminum-Zinc Alloy Coating: Also known as Galvalume, this coating consists of an aluminum-zinc alloy applied to the steel coils. It provides excellent corrosion resistance and heat reflectivity, making it suitable for various applications, including roofing, siding, and automotive parts. 4. Organic Coatings: These coatings are typically applied as a top layer over a base coat of galvanized or galvannealed coating. Organic coatings can be in the form of paints, lacquers, or powder coatings. They provide additional protection against corrosion, UV rays, and abrasion, while also enhancing the aesthetics of the steel coils. 5. Chromate Conversion Coating: This coating is primarily used as a pre-treatment before applying organic coatings. It helps improve adhesion between the steel surface and the organic coating, ensuring better corrosion resistance. The choice of coating depends on various factors such as the intended application, environmental conditions, desired appearance, and budget. Manufacturers and end-users should carefully consider these factors to select the most suitable coating option for their specific requirements.
- Q:How are steel coils used in the production of automotive stampings?
- Automotive stampings heavily rely on steel coils, which are vital for their production. These coils are typically crafted from top-notch steel and are cut into specific measurements to meet automotive manufacturers' specifications. To begin the process of using steel coils for automotive stampings, the steel must first be uncoiled. This task is accomplished by a machine called a decoiler, which unwinds the coil and feeds it into the stamping machine. By utilizing the decoiler, a consistent supply of steel is ensured for the stamping process. Once the steel coil is unwound, it is inserted into the stamping machine. Equipped with a die specifically designed for shaping the steel into desired automotive components, the machine commences its work. The die is capable of creating intricate and accurate shapes, such as car body panels, doors, fenders, and structural elements. By applying force, the stamping machine presses the steel coil against the die, forming it into the desired shape. The high-quality steel utilized in the coils guarantees that the stamped components possess the necessary strength and durability required for automotive applications. Following the stamping process, the stamped components undergo a thorough inspection to assess their quality and precision. Any flaws or defects are identified and rectified prior to the components being sent for further processing, including painting, welding, or assembly. In conclusion, steel coils are of utmost importance in the production of automotive stampings. They provide a continuous supply of high-quality steel, which is skillfully shaped into precise and long-lasting automotive components. The utilization of steel coils ensures that the automotive stampings adhere to the required standards for strength, durability, and precision.
- Q:How are steel coils used in the production of metal cladding?
- Steel coils serve as the primary raw material for metal cladding production. Metal cladding involves covering a building's exterior with a layer of steel to enhance its durability, aesthetics, and insulation. To begin the manufacturing process, galvanized steel coils are used. These coils are made by coating steel with zinc to prevent corrosion. They are then unrolled and fed into a roll-forming machine, which shapes them into the desired profile for the cladding panels. Once the coils are formed, they undergo various processes to improve their properties. These processes include cutting, perforating, and embossing to create patterns, textures, or openings in the panels. Additional protective layers, such as paint or powder coating, can also be applied to enhance corrosion resistance and appearance. The shaped and processed coils are assembled into metal cladding panels. These panels interlock seamlessly to create an appealing exterior for buildings. They can be attached to the building's structure using screws, clips, or adhesives. Using steel coils in metal cladding production offers several advantages. Steel is a strong and durable material, making it suitable for exterior applications that require resistance to weathering, impact, and other environmental factors. It also allows for a wide range of design options and customization. In summary, steel coils are essential in the production of metal cladding. They serve as the raw material, which is shaped, processed, and assembled into panels that enhance buildings' protection, aesthetics, and insulation properties.
- Q:is there a type of steel that is stronger or does the rail represent the top of the line?
- consumer-friendly steel is used however the rails are tempered to cause them to stand up to the pounding they get from the practice wheels,the intense velocity trains utilized in Europe are made up of a greater variety of steel in accordance to organization who makes them in Germany ,i think of it replaced into Krupp's of Germany who cause them to
- Q:What are the common manufacturing defects in steel coils?
- Common manufacturing defects in steel coils include surface defects such as scratches, pits, and scale, as well as shape defects like buckling, waviness, and edge cracks. Additionally, internal defects such as voids, inclusions, and segregation may also be present in steel coils.
- Q:What are the common methods of painting steel coils?
- Painting steel coils can be done using various methods, depending on specific requirements and desired outcomes. Below are some commonly used techniques: 1. The most frequently employed method for painting steel coils is coil coating. It involves applying a layer of paint to the coil's surface before it is formed into its final shape. The coil is initially cleaned and treated with chemicals to ensure proper paint adhesion. Various techniques, such as roll coating, spray coating, or dip coating, are used to apply the paint. Finally, the coil is cured in an oven to ensure the paint dries and adheres correctly. 2. Electrostatic painting is another method where an electrostatic charge is used to apply paint to the steel coil. After cleaning and pre-treatment, an electrostatic charge is applied to the paint particles. These charged particles are attracted to the grounded coil, resulting in an even and efficient paint application. This method is commonly used for high-performance coatings due to its excellent coverage and adhesion. 3. For applications requiring a durable and long-lasting finish, powder coating is a popular method. Dry powder paint is electrostatically applied to the coil's surface. The powder adheres to the coil due to the electrostatic charge, and then the coil is heated in an oven to melt and cure the powder, creating a smooth and protective coating. 4. Spray painting is commonly used for smaller steel coils or touch-up applications. A spray gun is used to apply the paint in a controlled and even manner after the coil is cleaned and pre-treated. This method allows for precise control and customization of the paint application. The choice of painting method depends on factors such as desired finish, durability requirements, cost considerations, and the specific application of the steel coil. Each method has its own advantages and limitations, so it is crucial to select the most suitable one based on the project's specific needs and constraints.
- Q:What is the difference between hot-rolled and cold-rolled steel coils?
- Hot-rolled steel coils are produced by heating the steel above its recrystallization temperature, resulting in a more malleable and less precise product. On the other hand, cold-rolled steel coils are processed at room temperature, yielding a stronger, more precise, and smoother finish.
- Q:What are the common coil processing equipment used in the industry?
- Some common coil processing equipment used in the industry include coil slitters, coil flatteners, coil feeders, and coil recoilers. These machines are essential for processing metal coils into various shapes and sizes, allowing for efficient production and manufacturing processes.
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Prepainted Rolled steel coil for Construction roofing use
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 30000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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