The Cheap Cold Rolled Steel Coil JIS G 3302

The Cheap Cold Rolled Steel Coil JIS G 3302 System 1

The Cheap Cold Rolled Steel Coil JIS G 3302

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 10000 m.t./month

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Chines Best Cold Rolled Steel Coil JIS G 3302

1.Structure of Cold Rolled Steel Description：

The raw material of cold rolled steel coil/sheet is high quality hot rolled product, and after pickling continuous rolling, degreasing, annealing,skin pass,slitting and cut to length line etc. Along with it many kinds of new technology and new process of global cold rolling production have been applied. Therefore the quality of the goods could be guaranteed. The product is widely used in outdoor and interior decoration, furnishing manufacturing, home appliance, automobile etc.

2.Main Features of the Cold Rolled Steel：

• Excellent process capability

• Smooth and flat surface

• Workability, durability

• Excellent heat resistance performance

• High strength

• Good formability

• Good visual effect

3.Cold Rolled Steel Images

The Cheap Cold Rolled Steel Coil JIS G 3302

4.Cold Rolled Steel Specification

Standard:AISI,ASTM,DIN,GB,JIS,JIS G3302 ASTM 653M EN10142

Grade: Q195~Q345

Thickness: 0.16mm~2.0mm

Width: 1250mm MAX

Coil weight:3-12 MT

Coil ID:508/610mm

Chemical composition:

0.150

0.476

11.231

12.50

0.900

0.039

0.010

5.FAQ of Cold Rolled Steel

1.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.

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.

Q: What are the main characteristics of galvanized steel coils?: The main characteristics of galvanized steel coils include high corrosion resistance, durability, and a shiny, metallic appearance. Galvanized steel coils are coated with a layer of zinc, which acts as a protective barrier against rust and other environmental factors. This coating also enhances the strength and longevity of the steel, making it suitable for various construction and manufacturing applications. Additionally, galvanized steel coils have excellent formability, allowing them to be easily shaped and fabricated into different products.

Q: Having a greater amount than 2% carbon in steel causes steel to suddenly become brittle. Why is this?: Carbon fiber has better tensile capability then steel meaning its better while pulled aside. Plus you could mould the fiber to make autos-or homes-out of carbon fiber.

Q: What are the common methods of painting steel coils?: There are several common methods used for painting steel coils, depending on the specific requirements and desired outcomes. Here are some of the most commonly employed methods: 1. Coil coating: This is the most common method used for painting steel coils. It involves applying a layer of paint on the coil's surface before it is shaped into its final form. The coil is first cleaned and pre-treated with chemicals to ensure proper adhesion of the paint. Then, the paint is applied using various techniques such as roll coating, spray coating, or dip coating. The coil is then cured in an oven to ensure proper drying and adhesion of the paint. 2. Electrostatic painting: This method involves using an electrostatic charge to apply the paint onto the steel coil. The coil is first cleaned and pre-treated, and then an electrostatic charge is applied to the paint particles. The charged particles are attracted to the grounded coil, resulting in an even and efficient paint application. This method is often used for high-performance coatings as it provides excellent coverage and adhesion. 3. Powder coating: Powder coating is a popular method for painting steel coils, especially for applications that require a durable and long-lasting finish. In this method, a dry powder paint is applied to the coil's surface electrostatically. The powder adheres to the coil due to the electrostatic charge, and then the coil is heated in an oven to melt and cure the powder, forming a smooth and protective coating. 4. Spray painting: Spray painting is commonly used for smaller steel coils or touch-up applications. It involves using a spray gun to apply the paint onto the coil's surface. The coil is cleaned and pre-treated, and then the paint is sprayed in a controlled and even manner. This method allows for precise control and customization of the paint application. Overall, the choice of painting method depends on factors such as the desired finish, durability requirements, cost considerations, and the specific application of the steel coil. Each method has its own advantages and limitations, and it is important to select the most suitable method based on the specific needs and constraints of the project.

Q: What are the limitations of using steel coils in certain applications?: Steel coils have a few limitations that may restrict their use in certain applications. Firstly, steel coils can be heavy and bulky, making them less suitable for applications where weight reduction is crucial. For instance, in industries such as aerospace or automotive, where lightweight materials are preferred to enhance fuel efficiency and improve performance, steel coils may not be the most suitable choice. Secondly, steel coils are vulnerable to corrosion, especially in environments with high moisture or exposure to chemicals. This limitation can restrict their use in applications where resistance to corrosion is crucial, such as marine or coastal structures. Additional protective coatings or regular maintenance may be required to mitigate this limitation, adding to the overall cost and maintenance efforts. Moreover, steel coils may not possess the necessary flexibility or malleability required for certain applications. In industries such as construction or manufacturing, where materials need to be easily shaped or bent into specific forms, steel coils might not offer the desired level of flexibility. This limitation can lead to difficulties in achieving desired designs or may require additional processing steps to mold the steel coils into the desired shape. Lastly, steel coils can have limitations in terms of their temperature resistance. In high-temperature applications, such as in furnaces or power generation, steel coils may experience thermal expansion or deformation, which can compromise their structural integrity. In such cases, alternative materials with higher temperature resistance, such as refractory metals or ceramics, may be more suitable. Overall, while steel coils are widely used and versatile materials, their limitations in terms of weight, corrosion resistance, flexibility, and temperature resistance can restrict their use in certain applications. It is crucial to consider these limitations and assess the specific requirements of the application when selecting materials for optimal performance and durability.

Q: How do steel coils contribute to the HVACR equipment industry?: Steel coils play a crucial role in the HVACR (Heating, Ventilation, Air Conditioning, and Refrigeration) equipment industry by providing efficient heat transfer and ensuring the effective functioning of various HVACR systems. These coils are typically made of high-quality steel and are an integral component of equipment such as air conditioners, heat pumps, refrigerators, and boilers. One of the primary functions of steel coils in HVACR equipment is to facilitate heat transfer. These coils are designed to efficiently transfer heat between the refrigerant and the surrounding air or water, depending on the specific system. By utilizing steel coils with a large surface area and good thermal conductivity, HVACR equipment can effectively cool or heat a given space. This ensures optimal energy efficiency and reduces operating costs for both residential and commercial applications. In addition to heat transfer, steel coils also contribute to the overall durability and longevity of HVACR equipment. The steel used in these coils is typically corrosion-resistant, which helps prevent damage from moisture or other environmental factors. This reliability is essential in HVACR systems, as they are often subjected to harsh conditions and must operate continuously to maintain comfortable indoor environments. Moreover, steel coils are versatile and can be customized to meet the specific requirements of different HVACR applications. Manufacturers can vary the size, shape, and configuration of the coils to fit the available space and optimize performance. This flexibility allows for the efficient integration of steel coils into various HVACR equipment, ensuring they meet the specific heating and cooling needs of different environments. Overall, steel coils are indispensable in the HVACR equipment industry. They enable efficient heat transfer, enhance durability, and offer customization options, thereby ensuring the effective functioning and energy efficiency of HVACR systems. By incorporating high-quality steel coils into their products, manufacturers can provide reliable and long-lasting solutions for heating, ventilation, air conditioning, and refrigeration needs in both residential and commercial settings.

Q: What are the challenges in coil blanking for high-strength steel?: Coil blanking for high-strength steel presents several hurdles due to the unique properties of this material. One of the main obstacles lies in the steel's high tensile strength, which makes cutting and blanking more difficult when compared to traditional steel grades. High-strength steel is typically harder and less malleable, resulting in heightened tool wear and greater cutting forces. Therefore, specialized cutting tools capable of enduring these extreme conditions are necessary. Additionally, the augmented cutting forces can cause increased vibrations, potentially impacting the accuracy and quality of the blanks. Another challenge arises from the spring-back effect displayed by high-strength steel after it is cut. This means that the material tends to return to its original shape, creating difficulties in achieving precise dimensions and tolerances in the blanks. Consequently, careful consideration and adjustment of the cutting parameters are required to minimize the spring-back effect. Furthermore, high-strength steel often contains a higher carbon content, leading to increased work hardening during the blanking process. As a result, the material becomes even harder and more brittle, making it more susceptible to cracks and fractures. To overcome this challenge, proper lubrication and cooling techniques are crucial in reducing heat buildup and minimizing the risk of cracking. Additionally, the heightened strength of the steel can also impact overall production efficiency. The increased cutting forces and tool wear may necessitate a reduction in cutting speeds, resulting in longer processing times. This can affect the productivity and throughput of the coil blanking process, requiring meticulous optimization and planning. In conclusion, the challenges involved in coil blanking for high-strength steel encompass increased cutting forces, tool wear, the spring-back effect, work hardening, and reduced production efficiency. Overcoming these challenges necessitates the use of specialized cutting tools, precise cutting parameters, proper lubrication and cooling techniques, and meticulous optimization of the production process.

Q: How are steel coils used in the manufacturing of conveyor belts?: Steel coils are used in the manufacturing of conveyor belts as they provide the necessary strength and durability required for transporting heavy loads. The steel coils are processed and shaped into strong, flat strips that are then woven or bonded onto the belt's surface, enhancing its strength and resistance to wear and tear. This ensures that the conveyor belt can efficiently and reliably carry materials across various industries, including mining, logistics, and manufacturing.

Q: How are steel coils measured for thickness?: Steel coils are measured for thickness using a device called a micrometer or a thickness gauge. The micrometer is pressed against the coil's surface, and the measurement is displayed on its calibrated scale, providing an accurate reading of the steel coil's thickness.

Q: Can steel coils be stretched?: No, steel coils cannot be stretched as they are already tightly wound and have limited flexibility.

Q: What are the different methods of edge trimming for steel coils?: There are several methods of edge trimming for steel coils, depending on the specific requirements and application. Some of the common methods include: 1. Slitting: This is one of the most common methods used to trim the edges of steel coils. It involves passing the coil through a set of circular knives that cut the edges into narrower strips. Slitting can be done in-line during the manufacturing process or as a separate operation. 2. Shearing: Shearing is another popular method used for edge trimming. It involves using a set of blades to cut the edges of the coil in a straight line. Shearing is often used when precise and clean cuts are required, and it can be done manually or with the help of automated machinery. 3. Laser cutting: Laser cutting is a more advanced method that uses a high-powered laser to trim the edges of steel coils. This method provides precise and smooth cuts, and it is often used when high accuracy and quality are essential. Laser cutting can be incorporated into the production line or performed as a standalone process. 4. Grinding: Grinding is a method that involves using abrasive wheels or belts to remove material from the edges of steel coils. It is commonly used to remove burrs, rough edges, or surface imperfections. Grinding can be done manually or with the help of automated machines, depending on the scale and complexity of the trimming process. 5. Waterjet cutting: Waterjet cutting is a method that utilizes a high-pressure jet of water mixed with abrasive particles to trim the edges of steel coils. This method is known for its versatility and ability to cut through a wide range of materials and thicknesses. Waterjet cutting is typically used when complex shapes or intricate designs need to be achieved. Overall, the choice of edge trimming method for steel coils depends on factors such as the desired accuracy, speed, complexity of the edges, and the specific requirements of the application. Different methods offer varying levels of precision, efficiency, and cost-effectiveness, allowing manufacturers to select the most suitable technique for their specific needs.

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