Cold Rolled Steel Coil with Good Quality

Cold Rolled Steel Coil with Good Quality System 1

Cold Rolled Steel Coil with Good Quality

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 100 m.t.

Supply Capability:: 10000 m.t./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.

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

Cold Rolled Steel Coil with Good Quality

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:How are steel coils used in the production of metal ceilings?: Steel coils are used in the production of metal ceilings as they serve as the raw material. The steel coils are processed and shaped into the desired dimensions and patterns before being installed as ceiling panels.

Q:How is the thickness of a steel coil measured?: The thickness of a steel coil is typically measured using a device called a thickness gauge or micrometer. This tool consists of a calibrated mechanical or digital system that measures the distance between two opposing surfaces of the steel coil. By placing the gauge on the coil and applying pressure, the thickness can be accurately determined.

Q:What are the different types of steel coil surface finish treatments?: There are numerous options for treating the surface finish of steel coils, each serving a distinct purpose and offering unique qualities. Several common types include: 1. Hot Rolling: This is a fundamental and widely-used treatment method for steel coil surface finish. It involves heating the steel above its recrystallization temperature and then rolling it to achieve the desired thickness. This process yields a rough surface texture. 2. Cold Rolling: In contrast to hot rolling, cold rolling involves rolling the steel coil at room temperature. This treatment produces a smoother surface finish with improved dimensional accuracy and tighter tolerances. 3. Galvanization: Galvanization is a process in which a protective zinc coating is applied to the surface of the steel coil. This treatment not only enhances the appearance, but also provides excellent corrosion resistance, making it suitable for outdoor applications. 4. Electro-Galvanization: Similar to galvanized steel, electro-galvanized steel coil is coated with a layer of zinc. However, this coating is applied through an electroplating process, resulting in a thinner and more controlled coating. 5. Pre-Painting: Pre-painting involves applying a layer of paint or protective coating to the steel coil before it is delivered to the customer. This treatment enhances the appearance and provides additional protection against corrosion. 6. Stainless Steel: The surface finish treatment for stainless steel coils involves passivating the steel to remove any impurities or contaminants on the surface. This process improves corrosion resistance and gives the steel a clean and smooth appearance. 7. Embossing: Embossing is a treatment where a pattern or design is pressed into the surface of the steel coil. This treatment enhances the aesthetic appeal and can provide added grip or texture, depending on the specific design. 8. Brushing: Brushing is a treatment that involves using a fine abrasive material to create a brushed pattern on the surface of the steel coil. This finish provides a unique texture and can help conceal scratches or imperfections. These are just a few examples of the different surface finish treatments available for steel coils. The choice of treatment depends on the specific requirements of the application, such as appearance, corrosion resistance, or functionality. It is crucial to select the most suitable treatment to ensure the desired outcome.

Q:I have my grandpa's navy knife from ww2, a mk2 combat knife i think, and i was wondering what type of steel it is made of. I'm guessing it's a high carbon steel, i'd just like to know exactly what grade.: I would get a 1095, serrated edge, tanto style, with either a good quality rubberized or bone handle.

Q:What are the different types of coil edge trimming machines?: There are several types of coil edge trimming machines available in the market. Some common types include manual coil edge trimmers, pneumatic coil edge trimmers, and automatic coil edge trimmers. Manual coil edge trimmers require manual operation and are suitable for low volume production. Pneumatic coil edge trimmers use compressed air to power the trimming process, making them faster and more efficient. Automatic coil edge trimmers are fully automated machines that can handle high volume production, enhancing productivity and reducing labor requirements.

Q:What are the different methods of painting steel coils?: There are several different methods of painting steel coils, each with its own advantages and applications. 1. Coil coating: This is a continuous and automated process where a coil of steel is unwound, cleaned, pretreated, primed, painted, and cured before being rewound. Coil coating offers excellent control over the paint application and ensures a consistent finish. It is commonly used for high-volume production of steel coils, such as in the automotive and construction industries. 2. Spray painting: This method involves manually or mechanically spraying paint onto the steel coils. It is a versatile and flexible method that allows for customization and precise control over the paint application. Spray painting can be done in various ways, such as airless spraying or electrostatic spraying, depending on the desired finish and the specific requirements of the project. 3. Dip coating: Also known as immersion coating, this method involves immersing the steel coils into a tank of paint. The coils are carefully lowered into the paint, ensuring that all surfaces are fully coated. Dip coating is often used for large or bulky steel coils that cannot be easily spray painted. It provides excellent coverage and can be suitable for certain applications, such as in the electrical or appliance industry. 4. Powder coating: This method involves applying a dry powder paint to the steel coils using an electrostatic process. The charged powder particles adhere to the grounded coils, creating a durable and even coating. Powder coating offers excellent resistance to impact, chemicals, and UV rays. It is commonly used in applications where a high-quality and long-lasting finish is required, such as in the aerospace or outdoor equipment industry. 5. Roll coating: This method involves passing the steel coils through a series of rollers that are partially submerged in paint. As the coils go through the rollers, the paint is transferred onto their surface. Roll coating is often used for thin or delicate steel coils, as it provides a gentle and uniform paint application. It is commonly used in the appliance or electronics industry. Each method has its own advantages and is chosen based on factors such as the desired finish, production volume, cost, and specific requirements of the project. Ultimately, the choice of painting method depends on finding the most suitable balance between quality, efficiency, and cost-effectiveness.

Q:my sister is making rolls and we have no idea what steel cut oats are. can someone please help with this?: It does NOT look or cook like oatmeal but is made from the same grain. It takes much longer to cook since it is a whole grain, and tastes very good by the way. If you hate the slimy feel of oatmeal, this is the one to try, with all the same nutritional goodness of oatmeal. You can find it in most grocery stores in the hot cereal aisle. EDIT: you are right Mnt. Camp, steel cut is better that the regular oatmeal.

Q:what is the porpose of preheating mild steel prior to welding: For most mild steel, it is not necessary to preheat the steel, even in thick sections. Preheating, as well as maintaining interpass temperatures is sometime used when welding high-strength or high-performance steels. This reduces the likelihood of weld cracks. Mild steel is ductile enough that weld cracks aren't usually a problem. Preheating reduces the speed at which the weld cools and solidifies. in high-strength steels, this produces a more ductile microstructure in the weld and heat affected zone, thus reducing the possibility of hot and cold cracks. This also may improve some of the mechanical properties of the H.A.Z., such as impact toughness. The slower cooling rate allows more time for hydrogen to diffuse out of the weld, reducing the potential for hydrogen embrittlement. Hydrogen is produced when water vapor reacts with the steel at high temperatures, producing iron oxide and hydrogen gas. Some steels can be damaged by even relatively small amounts of hydrogen. Electrodes used in flux core arc welding and in shielded metal arc welding often contain fluxes which tend to absorb moisture from the air. Also, rust and mill scale contain water molecules which are chemically bound to the iron atoms. Note that hydrogen embrittlement is generally not an issue with mild steel, due to it's low carbon and alloy content. Preheating also reduces shrinkage stresses, due to the slower cooling rate. This is beneficial in parts which are heavily restrained, or where distortion is a particular concern.

Q:How are steel coils inspected for surface cleanliness during processing?: Steel coils are inspected for surface cleanliness during processing through various methods such as visual inspection, magnetic particle inspection, and ultrasonic testing. These techniques help identify any contaminants, defects, or surface irregularities that may be present on the coils, ensuring their quality and suitability for further processing or use.

Q:How are steel coils used in the production of HVAC systems?: Steel coils are used in the production of HVAC systems as they serve as the primary component for heat transfer. These coils are responsible for absorbing heat from the surrounding air and transferring it to cool the interior of a building. Additionally, steel coils are used for the condenser coils in HVAC systems, where they aid in the removal of heat from the refrigerant, allowing for efficient cooling and dehumidification.

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