Prepainted Aluzinc Steel in coil System 1

Prepainted Aluzinc Steel in coil

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Product Description:

Specification

1. Thickness: 0.3-0.8mm

2. Width: 914-1250mm

3. Inner Diameter: 508mm

4. Weight of Steel Coil: 3-15MT

5. Available Dipped Layer: 50-150g/m2

6. Surface Texture: Normal Coated

7. Type of coating structure: 2/1 Coat the top surface of the steel sheet twice, coat the bottom surface once, and bake the sheet twice.

8. Front Side Paint Thickness: 15-20μm (bottom paint+top paint)

9. Back Side Paint Thickness: 5-10μm

Mechanical Properties

1. Mechanical properties of base metals

Grade	Tensile Test
Grade	Yield Strength MPa	Tensile Strength MPa	Elongation A80mm % ≥
DC51D+Z	140-350	270-500	22
DC52D+Z	140-300	270-420	26
DC53D+Z	140-300	270-380	30

2. Common performance of front coating

(1). Thickness: ≥20μm

(2). Pencil Hardness: 2H

(3). 60° specular glossiness of coating: >60

(4). 180°bend: ≤3T

(5). Impact: ≥9J

(6). Salt Fog Resistant: ≥500h

(7). Color difference:<3ΔE

Q: What are the different methods of punching steel coils?: There are several different methods used for punching steel coils, depending on the specific requirements and desired outcome. Here are a few common methods: 1. Mechanical Punching: This method involves using a mechanical press to apply force and create holes in the steel coil. It utilizes a punch and die set, where the punch is driven into the coil to create the hole. Mechanical punching is ideal for punching small to medium-sized holes and is often used in high-volume production settings. 2. Hydraulic Punching: Hydraulic punching utilizes hydraulic pressure to drive the punch into the steel coil. This method is often used for punching larger holes or shapes that require greater force. Hydraulic punching machines offer precise control and can handle thicker and harder materials. 3. Laser Cutting: Laser cutting is a non-contact method that uses a laser beam to cut through the steel coil. A focused laser beam is directed onto the coil, melting and evaporating the material to create the desired shape or hole. Laser cutting offers high precision and can be used for complex shapes and patterns. 4. Plasma Cutting: Plasma cutting involves using a high-velocity jet of ionized gas (plasma) to melt and remove the steel coil material. This method is suitable for cutting thicker steel coils and is often used for larger holes or irregular shapes. 5. Waterjet Cutting: Waterjet cutting utilizes a high-pressure jet of water mixed with abrasive particles to cut through the steel coil. This method is versatile and can effectively cut through various materials, including steel. Waterjet cutting is known for its high precision and clean cuts. Each method of punching steel coils has its own advantages and considerations. Factors such as material thickness, desired precision, production volume, and cost will determine the most suitable method for a specific application.

Q: What we have to keep in mind before buying a steel building?: A steel storage garage?? Proper ground preparation---steady level ground--and lots of friends to help erect it.

Q: What are the factors to consider when selecting steel coils for a specific application?: When selecting steel coils for a specific application, several factors need to be considered. Firstly, the desired strength and durability requirements of the application should be assessed to determine the appropriate grade of steel. Other important factors include the thickness and width of the coils, as well as their surface finish and flatness. The intended use and environment of the application, such as exposure to corrosion or extreme temperatures, should also be taken into account. Additionally, cost considerations and availability of the desired steel grade should be considered during the selection process.

Q: How are steel coils inspected for damage during transportation?: Steel coils are typically inspected for damage during transportation through visual inspections and non-destructive testing methods such as ultrasonic testing, magnetic particle inspection, and eddy current testing. These inspections help identify any cracks, dents, or other forms of damage that may have occurred during transportation.

Q: What are the common coil finishes available for steel coils?: There are several common coil finishes available for steel coils, each serving different purposes and providing distinct aesthetic appearances. Some of the most frequently used coil finishes include: 1. Hot-dip galvanized: This finish involves immersing the steel coil in a bath of molten zinc, which forms a protective layer on its surface. It provides excellent corrosion resistance and is widely used in outdoor applications such as roofing, fencing, and automotive parts. 2. Galvannealed: This finish is achieved by annealing the hot-dip galvanized steel coil, resulting in a matte gray appearance. Galvannealed coils offer enhanced paint adhesion, making them suitable for applications that require subsequent painting or powder coating, such as appliances and furniture. 3. Electro-galvanized: In this process, a thin layer of zinc is electroplated onto the steel coil's surface. Electro-galvanized finishes provide good corrosion resistance and are commonly used in indoor applications, such as 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, enhancing its appearance and providing additional 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 finish 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 a primary concern, such as structural components, pipes, and tubes. These are just a few of the most common coil finishes available for steel coils, and each offers unique properties and advantages depending on the intended use of the steel coil. It is important to carefully consider the specific requirements of the application to choose the most suitable coil finish.

Q: What are the dimensions of steel coils used in the structural component industry?: The dimensions of steel coils used in the structural component industry can vary depending on the specific application and requirements. However, some common dimensions for steel coils used in this industry include a width ranging from 600mm to 2000mm and a thickness ranging from 0.25mm to 10mm. The weight of these coils can also vary, typically ranging from a few kilograms to several tonnes. Additionally, the length of the steel coils can be customized to meet the specific needs of the structural component industry, with common lengths being 2000mm, 2500mm, and 3000mm. It is important to note that these dimensions are not exhaustive and can vary based on the specific product and manufacturer.

Q: What are the different methods of cut-to-length shearing for steel coils?: Steel coils can be cut-to-length using various methods, each with unique advantages and applications. Some commonly used methods include: 1. Rotary Shearing: This technique utilizes a rotating shear blade to cut through the coil. It offers excellent precision and can handle a wide range of material thicknesses. Rotary shearing is well-suited for high-volume production and allows for high cutting speeds. 2. Guillotine Shearing: In this method, a straight blade is employed to cut through the coil. It is a versatile technique that can handle different material thicknesses and widths. Guillotine shearing is relatively simple and efficient, making it a popular choice for many applications. 3. Slitting: Slitting involves creating multiple longitudinal cuts in the coil to produce narrower strips. It is commonly used when a coil needs to be divided into smaller coils or when narrower strips are necessary for specific applications. Slitting can be performed using either rotary or straight blades. 4. Laser Cutting: Laser cutting employs a high-powered laser beam to melt or vaporize the material, resulting in a precise and clean cut. It is ideal for cutting complex shapes or patterns and can handle both thin and thick steel coils. Laser cutting offers high accuracy and minimal material distortion. 5. Waterjet Cutting: In this method, a high-pressure stream of water mixed with abrasive particles is used to cut through the coil. It is suitable for a wide range of materials, including steel, and can achieve high accuracy. Waterjet cutting is often utilized for cutting thick coils or when minimizing heat-affected zones is crucial. Each method has its own strengths and limitations, and the selection depends on factors such as material thickness, required precision, production volume, and specific application requirements. Choosing the most suitable method is vital to ensure efficient and high-quality cut-to-length shearing for steel coils.

Q: Can steel coils be embossed?: Yes, steel coils can be embossed. Embossing is a process that involves creating raised or recessed designs on a material's surface, and it can be done on various materials, including steel.

Q: What are the common methods of painting or coating steel coils?: Coil coating is a commonly used technique for painting or coating steel coils. It involves cleaning and pre-treating the coils to remove contaminants and enhance adhesion. Next, a primer or base coat is applied to establish a solid foundation. This primer safeguards the steel against corrosion and enhances the overall durability of the coating. Once the primer is applied, the steel coils undergo a series of rollers to apply the topcoat. The topcoat can consist of various materials such as polyester, polyurethane, or fluoropolymer, depending on the desired properties of the final coating. These topcoats provide the desired color, gloss, and protection against weathering, chemical exposure, and UV radiation. Electrostatic spraying is another popular method for painting or coating steel coils. It involves atomizing the paint or coating material into fine droplets and charging them with electricity. The grounded steel coils attract these charged droplets, resulting in a controlled and even application of the paint or coating material. Powder coating is yet another technique utilized for painting or coating steel coils. It involves electrostatically charging a dry powder and spraying it onto the steel coils. The charged powder adheres to the steel surface due to electrostatic attraction. The coated steel coils are then heated, causing the powder to melt and form a continuous film, resulting in a durable and resistant coating. In conclusion, these methods provide a wide range of options in terms of color, finish, and performance characteristics for painting or coating steel coils. The choice of method depends on factors such as desired appearance, level of protection required, and specific application requirements.

Q: How do steel coils contribute to energy performance in buildings?: Steel coils contribute to energy performance in buildings through their use in the construction of energy-efficient heating, ventilation, and air conditioning (HVAC) systems. Steel coils are commonly used in HVAC equipment, such as air handlers and heat exchangers, due to their excellent thermal conductivity and durability. By efficiently transferring heat or cool air, steel coils help regulate the temperature in buildings, reducing energy consumption and improving overall energy performance. Additionally, steel coils are often used in the construction of insulated panels and roofing systems, providing excellent insulation and preventing thermal bridging, thereby further enhancing the energy efficiency of buildings.

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