Galvanized Steel Coil with Best Quality in China

Galvanized Steel Coil with Best Quality in China System 1

Galvanized Steel Coil with Best Quality in China System 2

Galvanized Steel Coil with Best Quality in China

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 10000 m.t./month

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Hot-dip Zinc Coating Steel Building Roof Walls
1.Structure of Hot-Dip Galvanized Steel Sheet Description：

Hot-dip galvanized steel coils are available with a pure zinc coating through the hot-dip galvanizing process. It offers the economy, strength and formability of steel combined with the corrosion resistance of zinc. The hot-dip process is the process by which steel gets coated in layers of zinc to protect against rust. It is especially useful for countless outdoor and industrial applications. Production of cold formed corrugated sheets and profiles for roofing, cladding, decking, tiles, sandwich walls, rainwater protective systems, air conditioning duct as well as electrical appliances and engineering.

2.Main Features of the Hot-Dip Galvanized Steel Sheet：

• Excellent process capability

• Smooth and flat surface

• Workability, durability

• Excellent anticorrosive property

• High strength

• Good formability

• Good visual effect

3.Hot-Dip Galvanized Steel Sheet Images:

Galvanized Steel Coil with Best Quality in China

4.Hot-Dip Galvanized Steel Sheet Specification：

Standard: ASTM, JIS,EN

Grade: CS, DX51D+Z,SGCC, SS 230~550,S220GD+Z~S550GD+Z, SGC340~SGC570

Thickness: 0.1mm~5mm

Width: max 2000mm

Coil weight:3-12 MT

Coil ID:508/610mm

Surface structure: zero spangle, regular spangle or minimum spangle

Surface treatment: Chromate treatment, Oiled/dry, skinpassed/non-skinpassed

Packing: Standard seaworthy export package

Technology test results:

Galvanized Steel Coil with Best Quality in China

5.FAQ of Hot-Dip Galvanized Steel Sheet：

We have organized several common questions for our clients，may help you sincerely：

1.How about your company？

A world class manufacturer & supplier of castings forging in carbon steel and alloy steel，is one of the large-scale professional investment casting production bases in China,consisting of both casting foundry forging and machining factory. Annually more than 8000 tons Precision casting and forging parts are exported to markets in Europe,America and Japan. OEM casting and forging service available according to customer’s requirements.

2.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.

3. 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 15-30 days, but the shipment will depend on the vessel situation.

Q: How are steel coils inspected for mechanical properties?: Steel coils are inspected for mechanical properties through a combination of destructive and non-destructive testing methods. Destructive methods involve conducting tensile, hardness, and impact tests on samples taken from the coils. Non-destructive methods, such as ultrasonic or magnetic particle testing, are also employed to detect surface and internal defects without damaging the coils. These inspections ensure that the steel coils meet the required mechanical specifications for their intended applications.

Q: How do you calculate the weight of a steel coil?: To calculate the weight of a steel coil, you need to know its dimensions and the specific gravity of the steel. The formula to calculate the weight is as follows: Weight of steel coil = Length of coil (in meters) x Width of coil (in meters) x Thickness of coil (in meters) x Specific gravity of steel First, measure the length, width, and thickness of the steel coil in meters. Ensure that all measurements are in the same unit for accurate calculations. Next, determine the specific gravity of the steel. Specific gravity is the ratio of the density of a substance compared to the density of water. For steel, the specific gravity is typically around 7.8. Multiply the length, width, and thickness of the coil together. This will give you the volume of the steel coil in cubic meters. Finally, multiply the volume of the coil by the specific gravity of steel to obtain the weight of the steel coil in kilograms (kg). Keep in mind that this calculation provides the weight of the steel coil without considering any additional factors such as the core material or any other components included in the coil.

Q: What are the different finishes available for steel coils?: There are several different finishes available for steel coils, each offering its own unique set of characteristics and benefits. Some of the most common finishes include: 1. Hot-dip galvanized: This finish involves immersing the steel coil in a bath of molten zinc, which creates a protective layer that prevents corrosion and rust. It provides excellent durability and long-term protection against harsh environmental conditions. 2. Electro-galvanized: Similar to hot-dip galvanizing, this finish uses an electrical current to apply a thin layer of zinc onto the steel coil. It offers good corrosion resistance and aesthetics, making it suitable for various applications. 3. Galvannealed: This finish combines the benefits of galvanizing and annealing processes. The steel coil is first galvanized and then annealed, resulting in a matte grey appearance with enhanced paint adhesion. Galvannealed finishes are commonly used in automotive and appliance industries. 4. Pre-painted: Also known as coil coating, this finish involves applying a layer of paint onto the steel coil before it is formed into its final product. Pre-painted finishes offer a wide range of colors, textures, and gloss levels, allowing for customization and improved aesthetics. 5. Stainless steel: Steel coils can also be finished with a layer of stainless steel, which provides excellent resistance to corrosion, heat, and chemicals. Stainless steel finishes are often utilized in applications where hygiene, durability, and a high-quality appearance are essential, such as in the food and beverage industry. 6. Cold-rolled: This finish involves passing the steel coil through a series of rollers at room temperature, resulting in a smooth, polished surface. Cold-rolled finishes offer improved dimensional accuracy, surface quality, and flatness, making them suitable for applications that require tight tolerances and a refined appearance. 7. Metallic coated: This finish involves applying a layer of a metallic coating, such as aluminum or zinc-aluminum alloy, onto the steel coil. Metallic coated finishes offer excellent corrosion resistance, lightweight properties, and aesthetic versatility. Overall, the choice of finish for steel coils depends on the specific requirements of the application, considering factors such as corrosion resistance, aesthetics, durability, and cost-effectiveness. It is important to consult with industry experts and manufacturers to determine the most suitable finish for a particular project.

Q: What are the challenges in coil blanking?: In order to achieve efficient and accurate production, coil blanking, a process used to cut flat metal sheets from coiled stock, must tackle several challenges. Some of the key challenges include: 1. Material variations: Coiled stock can have variations in thickness, width, and surface quality, which can impact the cutting process and result in inconsistent blanks. To ensure consistent quality and dimensional accuracy, it is crucial to carefully select and control the material. 2. Coil set and crossbow: Coiled stock often has inherent shape imperfections like coil set (longitudinal curvature) and crossbow (transverse curvature), which can cause alignment issues during cutting. Minimizing these imperfections requires the use of specialized equipment and techniques, such as straighteners and leveling systems. 3. Coil edge condition: The edges of coiled stock can have burrs, waves, or irregularities, which can affect the quality and precision of the cut blanks. Employing proper edge conditioning techniques, like deburring or edge trimming, is necessary to ensure clean and straight edges. 4. Slitting and shearing forces: The forces exerted during coil blanking can induce stresses and strains in the material, potentially leading to deformation or springback. To minimize these effects and maintain dimensional accuracy, careful consideration of slitting and shearing forces, along with proper tooling design and machine settings, is necessary. 5. Scrap and material waste: Coil blanking can generate significant amounts of scrap material, especially during setup and adjustment phases. Managing scrap and reducing material waste is crucial to optimize production efficiency and minimize costs. Efficient nesting algorithms and real-time monitoring systems can help achieve this. 6. Automation and productivity: Due to market demands, coil blanking often requires high-speed and high-volume production. Enhancing productivity can be achieved through the implementation of automation systems, such as robotic material handling and advanced control systems. However, integrating and synchronizing these components with the cutting process requires careful planning and system integration expertise. Overall, addressing these challenges in coil blanking necessitates proper material selection, advanced equipment, specialized techniques, and efficient process control. By overcoming these challenges, manufacturers can achieve consistent quality, dimensional accuracy, and productivity in coil blanking operations.

Q: What are the different grades of steel used in coil manufacturing?: There are various grades of steel used in coil manufacturing, including low carbon steel, medium carbon steel, high carbon steel, stainless steel, and alloy steel. These grades differ in their composition, strength, and corrosion resistance, allowing manufacturers to choose the most suitable grade for specific applications and requirements.

Q: How are steel coils used in the production of steel containers?: Steel coils are used in the production of steel containers by being processed and shaped into the desired form. These coils are unrolled and cut into specific lengths, which are then formed into the shape of the container. The coils provide the necessary material and strength to create durable and sturdy containers for various industries such as shipping, storage, and manufacturing.

Q: Can steel coils be stamped?: Yes, steel coils can be stamped. Stamping is a common manufacturing process used to shape and cut steel coils into desired forms and designs.

Q: How are steel coils processed before being used in manufacturing?: Steel coils undergo several processing steps before they are used in manufacturing. These steps typically include cleaning, pickling, cold rolling, annealing, and coating. Cleaning involves removing any dirt or impurities from the surface of the coil. Pickling is a chemical process that removes scale and oxides from the steel, enhancing its surface quality. Cold rolling reduces the thickness and improves the hardness of the steel. Annealing involves heating the coil and then slowly cooling it to enhance its ductility and reduce internal stresses. Lastly, coating is applied to protect the steel from corrosion or to enhance its appearance.

Q: what do you think about producebility of low density steel? for example: can density of 1020 steel (or ony others) be decreased without any loss of other properties.: If a material has a lower density than steel, then it isn't steel.

Q: What type of metal is T10 tool steel?: Carbon Tool Steel usually in the form of forged bar stock. Steel Grades for tool steel can be any of the following (depending on the application) T10/1.1645 SK3/SK4/W1A-91/2/ TC105/y10/1880/BW1B T10A/1.1545/y10A/1880 Standards are published by: DIN, JIS, ASTM, AISI, BS, SS, ISO, TOCT, GB Doug

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