Cold Rolled Steel Coil JIS G 3302 Walls Steel Coil ASTM 615-009

Cold Rolled Steel Coil JIS G 3302 Walls Steel Coil ASTM 615-009 System 1

Cold Rolled Steel Coil JIS G 3302 Walls Steel Coil ASTM 615-009

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 2222 kg/m²

Supply Capability:: 11 kg/m²/month

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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. it has a lower melting point than steel and good castability properties.^[1] Certain compositions of cast iron, while retaining the economies of melting and casting, can be heat treated after casting to make malleable iron or ductile iron objects. Steel is also distinguishable from wrought iron (now largely obsolete), which may contain a small amount of carbon but large amounts of slag.

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

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3.Cold Rolled Steel Images

Cold Rolled Steel Coil JIS G 3302 Walls Steel Coil ASTM 615-009

4.Cold Rolled Steel Specification

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

Grade: Q195~Q345

Thickness: 0.16mm~1.5mm,0.16-1.5mm

Width: 1250,600-1250mm

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

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 15-25 days, but the shipment will depend on the vessel situation.

Q: What are the storage guidelines for steel strips?: To ensure the longevity and prevent damage of steel strips, it is important to adhere to storage guidelines. Firstly, it is crucial to store them in a dry and well-ventilated area to avoid the accumulation of moisture which can lead to corrosion. Direct exposure to sunlight should be avoided as it can cause discoloration and degradation of the steel's surface. Furthermore, steel strips should be stored horizontally, either stacked or on racks, to prevent bending or warping. It is advisable to place wooden or rubber spacers between layers to provide support and prevent contact between the strips which may cause scratching or other surface damage. When stacking the strips, it is necessary to evenly distribute the weight to avoid excessive pressure on the lower strips. Additionally, they should be kept away from chemicals or substances that may stain or react with the steel. Regular inspections should be carried out to identify any rust or damage. If any issues are found, appropriate measures such as cleaning, applying rust inhibitors, or seeking professional assistance should be taken. By following these storage guidelines, steel strips can be preserved in optimal condition, ensuring their quality and performance in various applications.

Q: How do steel strips resist corrosion?: Steel strips resist corrosion through a process called corrosion resistance. This is achieved through a combination of factors including the composition of the steel, the presence of a protective coating, and the use of corrosion inhibitors. Firstly, the composition of steel strips plays a crucial role in their ability to resist corrosion. Steel is primarily made up of iron, but it also contains small amounts of other elements such as carbon, chromium, nickel, and manganese. These elements help to form a protective oxide layer on the surface of the steel, which acts as a barrier against corrosive substances. Furthermore, steel strips are often coated with a protective layer to enhance their corrosion resistance. Common coatings include zinc, which forms a protective barrier between the steel and the environment, and paints or epoxy coatings, which provide an additional layer of protection. These coatings not only prevent direct contact between the steel and corrosive substances but also act as a barrier against moisture, oxygen, and other corrosive agents. In addition to composition and coatings, corrosion inhibitors are often used to further enhance the resistance of steel strips. Corrosion inhibitors are chemical compounds that are added to the environment surrounding the steel to reduce the rate of corrosion. They work by either forming a protective film on the steel surface or by altering the chemical properties of the environment to make it less corrosive. Examples of corrosion inhibitors include chromates, phosphates, and organic compounds. Overall, steel strips resist corrosion through a combination of factors such as the composition of the steel, the presence of protective coatings, and the use of corrosion inhibitors. These measures work together to prevent the degradation of the steel's surface and ensure its longevity and durability.

Q: How do steel strips perform in low-temperature environments?: Steel strips perform well in low-temperature environments due to their high strength and resilience. Unlike some other materials, steel retains its mechanical properties even at extremely low temperatures, making it suitable for various applications such as construction, automotive, and aerospace industries. Its ability to withstand low temperatures without losing its structural integrity makes steel strips a reliable choice in cold climates or cryogenic environments.

Q: How are steel strips processed for flexibility?: Steel strips are processed for flexibility through a series of manufacturing techniques and treatments. One common method is cold rolling, where the steel strip is passed through rollers at room temperature to reduce its thickness and improve its flexibility. This process also increases the strength and hardness of the steel. Furthermore, annealing is often performed after cold rolling to further enhance the flexibility of the steel strip. Annealing involves heating the strip to a specific temperature and then gradually cooling it down. This process relieves any internal stresses in the steel and allows for easier deformation and increased flexibility. Additionally, tempering can be employed to improve the flexibility of steel strips. This process involves heating the steel to a high temperature and then rapidly cooling it. Tempering helps to increase the ductility and toughness of the steel, making it more flexible and resistant to cracking or breaking under stress. In some cases, steel strips may undergo a process called skin-pass rolling. This involves passing the strip through a set of rollers that apply a light pressure to the surface, resulting in a smoother and more uniform finish. Skin-pass rolling can contribute to the flexibility of the steel strip by reducing surface irregularities and enhancing its overall quality. Overall, a combination of cold rolling, annealing, tempering, and skin-pass rolling are commonly used to process steel strips for flexibility. These techniques help to optimize the material's mechanical properties, ensuring that it can be easily bent, formed, or shaped into various applications without compromising its structural integrity.

Q: How are steel strips used in the production of aerospace fasteners?: Steel strips are commonly used in the production of aerospace fasteners as they provide the necessary strength and durability required for these critical components. These strips are typically formed into various shapes and sizes, such as screws, bolts, and rivets, to securely join different parts of an aircraft. The high-quality steel used in these strips ensures that the fasteners can withstand the extreme conditions and stresses experienced during flight, thereby maintaining the structural integrity and safety of the aircraft.

Q: What are the different surface painting methods for steel strips?: Steel strips can be painted using various methods, each chosen based on desired outcomes and specific application requirements. One commonly used technique is electrostatic spray painting, where an electric current charges the steel strip and paint is then sprayed onto the surface. The charged particles are attracted to the strip, resulting in a uniform and durable coating. Another method is coil coating, where the strip is passed through rollers to apply and bake the paint onto the surface. This allows for precise control of paint thickness and consistent finish along the entire length. Powder coating is a popular technique involving the application of dry powder paint using an electrostatic gun. The charged particles adhere to the strip and are melted and fused into a smooth and durable coating through heating. Hot-dip galvanizing involves immersing the strip in molten zinc, forming a protective coating on the steel surface that offers excellent corrosion resistance. Lastly, some steel strips are painted using traditional brush or roller methods. While more time-consuming and less efficient, this method provides flexibility in color choices and can be cost-effective for smaller projects. In summary, the surface painting methods for steel strips include electrostatic spray painting, coil coating, powder coating, hot-dip galvanizing, and traditional brush or roller painting. The choice of method depends on factors such as desired finish, durability requirements, and cost considerations.

Q: How are steel strips processed for painting?: To ensure the paint coating on steel strips adheres properly and lasts, a series of steps are followed. Typically, the process includes the following: 1. Degreasing: Initially, the steel strips undergo a degreasing process to eliminate any oils, greases, or contaminants present on the surface. This is accomplished by using either a chemical degreaser or a high-pressure water spray. 2. Surface Preparation: Following degreasing, the steel strip surface must be made ready for painting. Various techniques like abrasive blasting, sanding, or acid etching are employed to create a roughened surface that enhances paint adhesion. 3. Priming: After preparing the surface, a primer is applied to the steel strips. The primer acts as a protective layer, improving the bond between the steel and the paint. It also provides resistance against corrosion and assists in achieving a smooth, even finish. 4. Drying and Curing: Once primed, the steel strips are left to dry and cure. This can be done at room temperature or through forced drying methods like heat or infrared curing. Drying and curing ensure that the primer is fully hardened and ready for the paint application. 5. Painting: The final step involves applying the paint to the primed steel strips. This can be accomplished using various methods such as spray painting, dip coating, or electrostatic coating. The paint is applied evenly to achieve the desired thickness and coverage. 6. Curing and Quality Control: After painting, the steel strips undergo a curing process to ensure proper adhesion and durability. This may involve baking the painted strips at a specific temperature for a designated duration. Quality control measures are implemented during this stage to inspect for defects, unevenness, or imperfections in the painted surface. In conclusion, the process of preparing steel strips for painting involves cleaning, surface preparation, priming, painting, curing, and quality control to achieve a high-quality, long-lasting paint finish.

Q: How do steel strips perform under high temperatures?: Steel strips are generally highly effective when subjected to high temperatures. Steel is renowned for its high melting point, which can vary from 1370°C to 1520°C (2500°F to 2750°F), depending on the specific type of steel. Consequently, steel strips possess the ability to endure exceedingly high temperatures without melting or compromising their structural integrity. Moreover, steel strips exhibit commendable thermal stability when exposed to elevated temperatures. They possess a low coefficient of thermal expansion, resulting in minimal expansion and contraction in comparison to other materials. This characteristic serves to prevent the warping or deformation of the strips when confronted with high temperatures. Additionally, steel strips possess exceptional strength and hardness, even under elevated temperatures. Although the strength of steel diminishes slightly as temperatures rise, it remains significantly stronger than numerous other materials. This attribute renders steel strips suitable for applications where resistance to high temperatures and mechanical strength are vital, such as in furnaces, boilers, and heat exchangers. Nevertheless, it is crucial to acknowledge that prolonged exposure to extremely high temperatures can bring about alterations in the properties of steel strips. At exceedingly high temperatures, steel may experience oxidation or scaling, leading to a deterioration in surface quality or corrosion resistance. Furthermore, repeated cycles of heating and cooling can result in thermal fatigue, causing the steel to become more brittle over time. As a result, careful consideration of these factors is necessary, along with the selection of the appropriate steel grade and surface treatment, to ensure optimal performance in high temperature conditions.

Q: What are the specifications for steel strips used in the manufacturing of springs?: The specifications for steel strips used in spring manufacturing can vary depending on the specific application and requirements of the spring. However, there are certain general specifications that are commonly followed in the industry. 1. Material: Carbon steel is the most commonly used material for spring steel strips due to its strength, durability, and cost-effectiveness. Depending on the application, stainless steel or alloy steel may also be used. 2. Thickness: The strength and flexibility of the spring are determined by the thickness of the steel strip. The thickness can range from a few millimeters to several centimeters, depending on the desired load-bearing capacity and deflection of the spring. 3. Width: The width of the steel strip can vary based on the desired dimensions of the spring. It is typically measured in millimeters or inches and can range from a few millimeters to several inches, depending on the size and design of the spring. 4. Surface Finish: To ensure proper functioning and longevity of the spring, the surface finish of the steel strip should be smooth and free from any defects such as cracks, scratches, or dents. Common surface finishes include polished, coated, or galvanized. 5. Tensile Strength: The maximum load the spring can withstand without permanent deformation or failure is determined by the tensile strength of the steel strip. It is typically measured in megapascals (MPa) and can range from a few hundred to several thousand MPa, depending on the application. 6. Hardness: The ability of the spring to resist wear, fatigue, and deformation is affected by the hardness of the steel strip. Hardness is typically measured on the Rockwell scale (HRC) or Brinell scale (HB) and can range from relatively soft to very hard, depending on the specific requirements of the application. 7. Coiling Direction: The intended use and installation requirements determine whether the springs are manufactured with left-hand or right-hand coil directions. It is important to consult with a spring manufacturer or engineer for precise specifications tailored to the intended use of the springs, as these specifications can vary depending on the specific requirements of the application.

Q: Can steel strips be used for making springs in automotive suspension systems?: Yes, steel strips can be used for making springs in automotive suspension systems. Steel strips are commonly used due to their high strength, durability, and ability to withstand heavy loads and repetitive movements. They provide the necessary flexibility and resilience required for suspension systems to absorb shocks and maintain stability while driving.

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