Prepainted Rolled Steel coil for Construction Roofing constrution
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 30000 m.t./month
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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: How are steel coils inspected for coil set?
- Steel coils are inspected for coil set by uncoiling a portion of the coil and measuring the amount of curvature or shape deviation. This is done using specialized equipment and techniques to accurately assess and quantify the coil set present in the steel coils.
- Q: Why is steel so important? How does it help us in everyday life?
- steel comes from iron. Iron is a natural resource and is abundent in nature. so being able to turn it into steel means it can be used for alllll sorts of things! from buildings, cars, piping and tubes, to washing machines, appliances and many other things. its used in our everyday life and is a great, strong material.
- Q: What are the common coil finishes available for steel coils?
- Steel coils can be finished in various ways to serve different purposes and achieve different aesthetic appearances. Some popular coil finishes include: 1. Hot-dip galvanized: By immersing the steel coil in molten zinc, a protective layer is formed on its surface. This finish is ideal for outdoor applications like roofing, fencing, and automotive parts due to its excellent corrosion resistance. 2. Galvannealed: Achieved by annealing the hot-dip galvanized coil, this finish gives a matte gray appearance. Galvannealed coils have enhanced paint adhesion, making them suitable for subsequent painting or powder coating in applications like appliances and furniture. 3. Electro-galvanized: A thin layer of zinc is electroplated onto the surface of the steel coil in this process. Electro-galvanized finishes offer good corrosion resistance and are commonly used indoors, such as in electrical enclosures, HVAC systems, and automotive components. 4. Pre-painted or coated: These finishes involve applying a layer of paint or a coating system to the steel coil, improving its appearance and providing extra protection. Pre-painted coils are extensively used in construction, appliances, and automotive industries due to their aesthetic appeal and corrosion resistance. 5. Bare or mill finish: This refers to the untreated, raw steel coil without any additional coatings or finishes. Bare steel coils are commonly used in applications where corrosion resistance is not the main concern, such as structural components, pipes, and tubes. These are just a few examples of the many coil finishes available for steel coils, each offering unique properties and advantages depending on the intended use. Carefully considering the specific requirements of the application is important when choosing the most suitable coil finish.
- Q: What are the dimensions of steel coils used in the construction materials industry?
- The dimensions of steel coils utilized in the construction materials industry may differ based on specific requirements and applications. Nevertheless, there exist some commonly employed dimensions. In this industry, steel coils usually possess a width that spans from 600mm to 2,000mm, with the most frequently observed widths being 1,000mm and 1,200mm. The thickness of these coils can fluctuate between 0.4mm and 2.5mm, with the most commonly adopted thicknesses ranging between 0.6mm and 1.2mm. The inner diameter of the coil, commonly referred to as the core size, can vary from 508mm to 610mm, with 610mm being the predominant core size. Moreover, the weight of these coils can also differ, with typical weights ranging from 3 to 15 tons. It is important to emphasize that these dimensions might alter depending on specific project requirements and can be tailored to suit the demands of a particular construction project.
- Q: How do steel coils contribute to the circular economy?
- Steel coils contribute to the circular economy through their recyclability and reusability. The circular economy aims to minimize waste and promote the continuous use of resources, and steel coils align perfectly with this concept. Firstly, steel coils are made from recycled steel, which reduces the need for extracting raw materials and the associated environmental impact. By using recycled steel, we can conserve natural resources and reduce energy consumption during the manufacturing process. This practice helps to lower carbon emissions and decrease the overall ecological footprint. Furthermore, steel coils can be easily recycled at the end of their lifecycle. Steel is one of the most recycled materials globally, with a high recycling rate. When the coils reach the end of their use, they can be collected, processed, and transformed into new steel products, without losing their properties or quality. This closed-loop recycling system ensures that steel resources are continuously utilized, minimizing the need for virgin steel production. Additionally, steel coils support the circular economy by enabling the creation of durable and long-lasting products. Steel is known for its strength and durability, making it ideal for various applications such as construction, automotive, and packaging. By using steel coils, we can produce products that have a longer lifespan, reducing the need for frequent replacements and minimizing waste generation. Moreover, steel coils can be reused multiple times before they are recycled. They can be rewound, reshaped, or repurposed for different applications, extending their lifecycle and reducing the demand for new coils. This reuse aspect of steel coils contributes to resource efficiency and waste reduction. In summary, steel coils play a significant role in the circular economy by being made from recycled steel, being easily recyclable themselves, enabling the creation of durable products, and promoting reuse. Their contribution helps to close the loop in the steel industry, conserves natural resources, reduces waste generation, and minimizes environmental impact.
- Q: How do steel coils contribute to energy efficiency in transportation?
- Steel coils are essential in energy-efficient transportation due to their lightweight yet strong nature. The use of steel coils in vehicles, such as cars and trucks, reduces the overall weight of the vehicle, enhancing fuel efficiency and reducing carbon emissions. Additionally, steel coils are often used in rail transportation, where their durability and strength contribute to the energy efficiency of trains by allowing for higher speeds and improved load carrying capacity.
- Q: What are the common uses of pre-painted steel coils?
- Pre-painted steel coils are commonly used in various industries such as construction, automotive, and appliances. They are utilized for manufacturing roofing and wall panels, garage doors, ductwork, and other building components. In the automotive sector, pre-painted steel coils are employed to produce body panels, trims, and other exterior parts. Additionally, they find applications in the manufacturing of household appliances like refrigerators, washing machines, and ovens.
- Q: How are steel coils tested for flatness and straightness?
- Steel coils are commonly tested for flatness and straightness using various methods such as visual inspection, measuring with straightedges, laser-based measurements, or using specialized equipment like tension leveling machines. These tests ensure that the steel coils meet the required standards and are suitable for further processing or use in various industries.
- Q: What are the different coil packaging options available for steel coils?
- Customers have a range of coil packaging options to choose from for steel coils, depending on their specific requirements and preferences. Some commonly used packaging options include the following: 1. Traditional steel strapping is used to secure the coil, ensuring excellent stability and protection during transportation and storage. 2. Plastic strapping is a lighter and more cost-effective alternative to steel strapping, suitable for smaller and lighter steel coils while still providing sufficient strength and protection. 3. Shrink wrapping involves using heat to tightly seal a plastic film around the steel coil, offering protection against moisture, dust, and other contaminants. 4. Wooden crates provide additional protection against physical damage during handling and transportation. They can be customized to fit the coil's dimensions and secured with straps or nails. 5. Coil covers are heavy-duty plastic or fabric covers that shield the steel coil from environmental factors like UV exposure, moisture, and dust. They are often used in combination with other packaging methods. 6. Paper or fiberboard wrapping offers a lightweight and cost-effective solution for protecting the coil against minor scratches and abrasions. 7. Customized packaging allows for a combination of the above options or tailor-made solutions based on specific requirements. This may involve additional padding, corner protectors, or special handling instructions to ensure safe transportation and storage. Customers should consider factors such as coil size, weight, transportation mode, storage conditions, and budget to choose the most suitable coil packaging option for their needs.
- Q: What are the factors affecting the formability of steel coils?
- The factors affecting the formability of steel coils include the composition and microstructure of the steel, the thickness and width of the coil, the temperature and speed of the forming process, the lubrication used during forming, and the presence of any surface defects or contaminants.
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Prepainted Rolled Steel coil for Construction Roofing constrution
- 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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