Pre-painted Rolled Steel Coil for Construction Roofing Constrution
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 25 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:How do steel coils contribute to the agricultural industry?
- Steel coils are essential in the agricultural industry as they are used to manufacture various equipment and machinery. From tractors and harvesters to irrigation systems and storage tanks, steel coils provide the necessary strength and durability required for these agricultural applications. Additionally, steel coils are used in the construction of infrastructure like barns, silos, and fences, ensuring the safe storage and protection of crops and livestock. Overall, the use of steel coils in the agricultural industry helps enhance productivity, efficiency, and sustainability in farming operations.
- Q:What are the common methods of handling steel coils during production?
- During production, steel coils can be handled using a variety of methods. These methods have been developed to guarantee the secure movement and storage of the coils, as well as to streamline the processing. 1. Forklifts: Within a production facility, forklifts are frequently employed to transport steel coils. Equipped with specialized attachments like coil rams or coil hooks, forklifts securely grip the coils, making transportation effortless. They are especially useful for moving coils over short distances or between different areas of the production floor. 2. Overhead cranes: Another commonly used method for handling steel coils is through the use of overhead cranes. These cranes are usually fixed on rails and can span the entire length of the production facility. By utilizing lifting devices such as C-hooks or magnets, overhead cranes can securely lift and transport the coils. They are particularly beneficial for moving large or heavy coils over longer distances. 3. Coil cars: Coil cars are specialized vehicles mounted on rails, specifically designed to transport steel coils within a production facility or between different areas of a steel mill. These cars are equipped with adjustable arms or forks that can be positioned to securely hold the coils. Coil cars are often utilized when there is a need to move large quantities of coils simultaneously. 4. Coil racks: To store steel coils in a vertical position, coil racks are employed. Constructed from heavy-duty steel, these racks are designed to securely hold multiple coils. They are commonly found in warehouses or storage yards, maximizing space while allowing easy access to the coils. 5. Coil trailers: For long-distance transportation of steel coils, specially designed trailers known as coil trailers are used. These trailers incorporate built-in coil cradles or bunks that securely hold the coils during transit. They often feature adjustable or removable coil racks to accommodate different sizes or configurations of coils. In summary, various specialized equipment such as forklifts, overhead cranes, coil cars, coil racks, and coil trailers are commonly used to handle steel coils during production. These methods prioritize worker safety and coil integrity while promoting efficient movement and storage throughout the production process.
- Q:What are the common packaging defects in steel coils?
- Some common packaging defects in steel coils include improper wrapping, inadequate strapping or banding, loose or damaged packaging materials, moisture or water damage, and insufficient protection against impacts or abrasion.
- Q:How do steel coils contribute to strength and stability in structures?
- Steel coils contribute to strength and stability in structures due to their inherent properties. The coils are made of high-strength steel, which provides excellent tensile strength and resistance to deformation. When used in structural components such as beams, columns, or foundation systems, steel coils reinforce the structure and help distribute loads evenly, enhancing its overall strength and stability. The flexibility and durability of steel coils also enable structures to withstand external forces, such as wind or seismic loads, without significant deformation or failure.
- Q:How would you calculate the maximum plastic deformation (expansion) a steel pipe can handle before it actually fails?
- You can calculate the maximum reversible strain, for elastic loading as follows: You need to look up the yield strength (for that particular type of steel). Divide this yield strength by the elastic modulus of steel (also called Young's modulus). That gives you the strain at the onset of yielding, the maximum you can strain the steel fibers before crossing the point of no return. If you are interested in the strain until failure, you need to take tensile test measurements. Seldom do people document an equation to model the non-elastic portion of the stress-strain curve of the specimen, because seldom do we design systems to operate with materials which yield. We want systems which only deform reversibly and elastically. This means you need to perform an experiment to find what you are actually desiring to know.
- Q:I want to buy a VERY sturdy bunkbed, but don't know which one would be better with not getting loose or falling apart.
- Metal/Steel, tighten it down and put some washers in between the steel and the screw so it creates a tight fit and movement wont affect the screw directly.
- Q:How are steel coils used in the production of electrical transmission poles?
- Steel coils are an essential component in the production of electrical transmission poles. These coils are made from high-quality steel and are used to fabricate the poles with the necessary strength and durability to withstand the demanding conditions of electrical transmission. Firstly, steel coils are used to manufacture the main body of the transmission poles. The coils are unrolled and shaped into large cylindrical sections, which are then welded together to form the pole's structure. This process allows for the creation of poles in various lengths, diameters, and wall thicknesses, catering to specific transmission requirements. The use of steel coils ensures that the transmission poles have the necessary structural integrity to support heavy electrical conductors and withstand environmental factors such as wind, ice, and seismic activities. Steel is known for its high strength-to-weight ratio, making it an ideal material for these poles, as it provides the required strength while keeping the pole relatively lightweight. Moreover, steel coils are also used to fabricate the flanges and brackets that are attached to the poles. These components are essential for securing and supporting the electrical conductors and insulators on the poles. By using steel coils, these flanges and brackets can be manufactured with precise dimensions and strength, ensuring a secure and reliable connection between the electrical components and the transmission poles. In addition to their structural benefits, steel coils also offer excellent corrosion resistance. This is crucial in the production of electrical transmission poles, as they are often exposed to harsh weather conditions and corrosive environments. Steel coils are typically coated with protective layers such as zinc or epoxy to prevent rust and corrosion, enhancing the lifespan of the transmission poles. In conclusion, steel coils play a vital role in the production of electrical transmission poles. They are used to fabricate the main body of the poles, as well as the flanges and brackets that secure the electrical components. With their high strength, durability, and corrosion resistance, steel coils ensure that transmission poles can safely and reliably support electrical conductors for the efficient transmission of electricity.
- Q:How are steel coils inspected for surface quality?
- Steel coils are inspected for surface quality through a meticulous process that involves various methods and technologies. The inspection is crucial as it ensures the coils meet the required standards and are free from any defects or imperfections. Here are the steps involved in inspecting steel coils for surface quality: 1. Visual Inspection: Initially, the coils undergo a visual inspection where trained personnel visually examine the entire surface for any visible defects such as scratches, dents, or any irregularities. This step helps identify any obvious issues that can be detected through visual observation. 2. Magnetic Particle Inspection: This non-destructive testing method involves applying a magnetic field to the steel coil's surface and then applying a magnetic particle solution. Any surface cracks or defects will cause the magnetic particles to cluster, making them visible under proper lighting. This technique is highly effective in detecting surface cracks and other surface abnormalities. 3. Eddy Current Testing: This method of inspection utilizes electromagnetic induction to identify surface defects. An eddy current probe is passed over the steel coil's surface, and any variations in the electrical current induced by the magnetic field will be detected. This technique is particularly useful for detecting surface cracks, pits, or corrosion on the coil's surface. 4. Ultrasonic Testing: Ultrasonic waves are used to inspect the steel coil's surface for any hidden defects such as subsurface cracks or inclusions. High-frequency sound waves are transmitted into the material, and any changes in the sound wave pattern that are reflected back indicate the presence of defects. Ultrasonic testing is highly reliable and can detect even the smallest defects within the steel coil. 5. Surface Roughness Measurement: The surface roughness of the steel coil is measured using specialized equipment. This measurement helps determine if the surface meets the required smoothness standards. The equipment scans the surface and provides detailed information about the roughness, enabling the inspector to ensure it falls within the acceptable range. Overall, steel coils undergo a comprehensive inspection process that combines visual examination with advanced testing methods such as magnetic particle inspection, eddy current testing, ultrasonic testing, and surface roughness measurement. These inspection techniques help identify and evaluate any potential defects or surface irregularities, ensuring that the steel coils meet the required surface quality standards.
- Q:What materials are used to make steel coils?
- Steel coils are primarily made from a material called steel, which is an alloy composed mainly of iron and carbon. The specific type of steel used to make coils depends on the desired properties and applications. Generally, carbon steel is the most common type used, as it offers strength, durability, and versatility. Other alloying elements may be added to enhance certain properties or characteristics of the steel, such as manganese, silicon, nickel, or chromium. The production of steel coils involves melting down the raw materials, refining the molten steel, and then shaping it into coils using specialized equipment and processes.
- Q:What are the different methods of leveling steel coils?
- There are several different methods of leveling steel coils, including roller leveling, stretcher leveling, and tension leveling. Roller leveling involves passing the coil through a series of rollers to flatten it. Stretcher leveling uses a hydraulic stretcher to stretch the coil in order to remove any residual stresses. Tension leveling involves applying tension to the coil while passing it through a series of rollers, which helps to eliminate any waviness or unevenness.
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Pre-painted Rolled Steel Coil for Construction Roofing Constrution
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 25 m.t./month
OKorder Service Pledge
OKorder Financial Service
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