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: What are the typical tolerances for steel coils?
- The typical tolerances for steel coils vary depending on the specific requirements and standards set by the industry. However, common tolerances for steel coils include thickness tolerances of +/- 0.001 to 0.005 inches, width tolerances of +/- 0.005 to 0.050 inches, and length tolerances of +/- 0.250 to 0.500 inches. These tolerances ensure that the steel coils meet the desired specifications and can be used effectively in various applications.
- Q: I'm trying to bend stainless steel spoons, forks knives etc. for an art project. Will heating them help bend them into certain shapes or will heat only strengthen it? What is the best way to bend stainless steel?
- We are regular buyers of such bends.
- Q: What's the best material for color coated steel coil?
- Galvanized steel sheet with hot-dip galvanized or zinc plated surface.
- Q: How are steel coils inspected for width using laser measurement?
- Steel coils are inspected for width using laser measurement by placing a laser sensor on one side of the coil and a reflective target on the other side. The laser beam is emitted towards the target, and the reflected beam is analyzed by the sensor. Based on the time it takes for the beam to travel back and the angle of the beam, the width of the steel coil can be accurately measured.
- Q: What are the different types of surface treatments for steel coils?
- Steel coils can undergo various surface treatments to enhance their appearance, protect against corrosion, and improve durability. Common treatments include: 1. Hot-dip galvanizing: Immersing steel coils in molten zinc creates a protective layer, offering exceptional corrosion resistance and resilience in harsh environments. 2. Electro-galvanizing: Electroplating a thin zinc layer onto the steel surface provides good corrosion resistance and enhances aesthetics. 3. Organic coating: Coating steel coils with organic materials like paints, lacquers, or polymer films offers corrosion, abrasion, and UV protection, while providing a wide range of color options. 4. Phosphating: Treating the steel surface with a chemical process forms a layer of phosphate crystals, improving coating adhesion and corrosion resistance. 5. Chromating: Also called passivation, this treatment involves applying a chromate conversion coating, enhancing corrosion resistance and offering a decorative finish. 6. Oiling: Applying a thin layer of oil to steel coils during storage and transportation prevents corrosion and can be easily removed before further processing. 7. Pickling: Immersing steel coils in an acid solution removes impurities and scale, improving surface finish and preparing the steel for subsequent processing or coatings. 8. Tin plating: Electroplating a layer of tin onto steel coils provides excellent corrosion resistance, solderability, and aesthetic appeal. These treatments are just a few examples of the many available for steel coils. The choice depends on specific application requirements, including desired appearance, corrosion resistance, and environmental conditions.
- Q: it has 2 be 20 inches overall, and 2and1/2 inches wide and .25 or more inches thick... im thinking truck steel but im not sure thx
- What is the purpose of the knife? What properties do you want? Strength, flexibility, ability to hold an edge, ability to make razor sharp, ease to sharpen, resistance to corrosion, cost? What method are you going to use to make the blade? Cast, forge and hammer, multiple folds? Are you going to be a stabbing knife, a slicing knife, chopping knife, or just a pretty show knife? What is truck steel? Doesn't sound like it would be very good blade steel.
- Q: Are steel coils used in appliances manufacturing?
- Yes, steel coils are commonly used in appliances manufacturing. They are widely used for constructing the frames, cabinets, and other structural components of various appliances such as refrigerators, washing machines, dishwashers, and ovens. Steel coils provide strength, durability, and stability to these appliances, making them an essential component in their manufacturing process.
- Q: What are the common processing defects in steel coils?
- Steel manufacturers must identify and rectify the following processing defects commonly found in steel coils: 1. Coil breaks: These occur when the steel strip breaks during the process of winding the coil. Improper tension control or material defects can cause these breaks. 2. Slivers: Thin, elongated steel pieces get trapped in the coil during the rolling process. Foreign materials, scale, or defects in the rolling mill can cause slivers. 3. Edge cracks: Cracks appearing along the edges of the coil are known as edge cracks. Improper edge trimming, material defects, or excessive rolling forces can cause these cracks. 4. Surface defects: Scratches, pits, or scars on the steel coil constitute surface defects. Handling issues, improper cleaning, or rolling mill defects can cause such defects. 5. Coil set: Coil set refers to the coil's tendency to retain a curvature even after it has been uncoiled. This can occur due to uneven cooling during the rolling process or improper tension control. 6. Oil spots: Stains or discolorations on the steel coil caused by residual oil or lubricants are known as oil spots. Inadequate cleaning or incorrect lubricant application can lead to oil spots. 7. Wavy edges: Irregularities or waves along the edges of the steel coil are referred to as wavy edges. Uneven rolling forces or improper edge trimming can cause these irregularities. 8. Lamination: Lamination defects occur when layers or sheets of steel are not properly bonded together. Material defects or improper rolling conditions can cause lamination defects. 9. Burr: A raised edge or roughness along the edge of the steel coil is called a burr. Improper trimming or cutting processes can cause burrs. 10. Non-uniform thickness: Non-uniform thickness refers to variations in the thickness of the steel coil. Uneven rolling forces, improper cooling, or material defects can cause non-uniform thickness. Identifying and addressing these processing defects is crucial for steel manufacturers to ensure the quality and reliability of their steel coils.
- Q: Can steel coils be stacked on top of each other?
- Yes, steel coils can be stacked on top of each other.
- Q: What are the common transportation defects in steel coils?
- Steel coils can experience various transportation defects. Improper handling or securing during transportation is a major cause of coil damage, resulting in dents, scratches, or tears in the steel. Coil edge damage is another issue that arises when the coils lack proper protection or rub against each other during transit, leading to deformation or breakage of the edges. Additionally, coil shifting occurs when the coils are inadequately secured or braced, causing them to move and shift during transportation, potentially causing misalignment or damage. Moreover, coil corrosion is a prevalent defect that arises when the coils are exposed to moisture or corrosive elements during transportation, leading to rust and deterioration of the steel. To prevent these common transportation defects in steel coils, it is essential to implement appropriate handling, securing, and protection measures.
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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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