Cold Rolled Steel coil --in Good Quality China Best

Cold Rolled Steel coil --in Good Quality China Best System 1

Cold Rolled Steel coil --in Good Quality China Best System 2

Cold Rolled Steel coil --in Good Quality China Best System 3

Cold Rolled Steel coil --in Good Quality China Best

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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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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. 2.Main Features of the Cold Rolled Steel：

• Excellent process capability

• Smooth and flat surface

• Workability, durability

• High strength

• Good visual effect

3. Cold Rolled Steel Images

Cold Rolled Steel coil --in Good Quality China Best

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

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，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 they worth today? As well as a 1943 steel nickel?: The article I am inclosing quotes the price at 50 cents, apparently the 1943 copper penny is worth thousands of dollars.

Q:How are steel coils used in the production of aerospace components?: Steel coils are used in the production of aerospace components in a variety of ways. One common application is in the manufacturing of structural parts, such as frames, beams, and brackets. Steel coils are often processed into flat sheets or strips, which are then cut and formed into the desired shape for these components. The strength and durability of steel make it an ideal material for these critical parts that need to withstand extreme forces and conditions. Additionally, steel coils are used in the production of engine components, such as turbine blades and combustion chambers. These components require materials with high temperature resistance and excellent mechanical properties. Steel coils are processed and shaped into intricate forms to create these vital engine parts, ensuring efficient and reliable operation. Furthermore, steel coils are used in the production of fasteners, such as bolts, nuts, and screws, which are essential for assembling various aerospace components. The high strength and corrosion resistance of steel make it a preferred choice for these fasteners, as they need to withstand the extreme forces and environments experienced during flight. Overall, steel coils play a crucial role in the production of aerospace components by providing the necessary strength, durability, and reliability required for safe and efficient operation in the demanding aerospace industry.

Q:How do steel coils compare to other materials, such as aluminum or copper?: Steel coils have several advantages over other materials such as aluminum or copper. Firstly, steel is generally stronger and more durable, making steel coils less prone to damage or deformation. Additionally, steel has better heat resistance and can withstand higher temperatures, making it suitable for a wider range of applications. Steel coils also tend to be more cost-effective compared to aluminum or copper, making them a popular choice in various industries.

Q:Can steel coils be coated with phosphorescent materials?: Yes, steel coils can be coated with phosphorescent materials. The phosphorescent coating can be applied to the surface of the steel coils, allowing them to emit a glow in the dark or low-light conditions.

Q:What are the different methods of surface inspection for steel coils?: Steel coils can undergo surface inspection using various methods, each with its advantages and limitations. Among the commonly used techniques are: 1. Visual Inspection: Inspectors visually examine the steel coil surface for defects like scratches, dents, or discoloration. Though subjective and reliant on inspector expertise, this method proves cost-effective for detecting obvious defects. 2. Magnetic Particle Inspection (MPI): This method involves applying a magnetic field to the coil and then iron particles on the surface. Disruptions in the magnetic field caused by defects or cracks gather the particles, making the flaws visible. MPI effectively detects surface cracks and defects not easily seen by the naked eye. 3. Eddy Current Testing (ECT): ECT, a non-destructive testing method, employs electromagnetic induction to identify surface defects in steel coils. A probe with a coil generates an alternating magnetic field near the coil surface. Changes in electrical conductivity or magnetic permeability due to surface defects lead to a change in the induced current, which can be analyzed. ECT successfully identifies cracks, corrosion, and other surface irregularities. 4. Ultrasonic Testing (UT): High-frequency sound waves are used to examine both the surface and subsurface of steel coils. A transducer sends ultrasonic waves into the steel, and the reflected waves are analyzed to detect material changes or anomalies. UT effectively identifies cracks, delaminations, or voids within the coil, providing valuable insights into the steel's structural integrity. 5. Optical Inspection: This technique utilizes advanced imaging techniques like cameras or laser scanners to capture high-resolution images of the coil surface. These images are then analyzed for defects such as scratches, pits, or irregularities. Optical inspection provides detailed information and is often used alongside other methods for a comprehensive inspection. It is important to note that each method has its limitations and may be more suitable for specific defect types or surface conditions. Therefore, a combination of these techniques is often employed to ensure a thorough and accurate inspection of steel coils.

Q:How are steel coils inspected for straightness using laser alignment?: The straightness of steel coils is examined using laser alignment technology in a precise and automated manner. This technology offers a non-contact approach to measuring the straightness of steel coils with high accuracy and efficiency. To begin with, a conveyor system is utilized to move the steel coil through the inspection area. As the coil passes through, a laser alignment system is set up to emit a laser beam across the width of the coil. This laser beam acts as a reference line for measuring straightness. The laser alignment system consists of a laser emitter and a receiver unit. The emitter projects a perfectly straight and parallel laser beam for alignment purposes. On the opposite side of the coil, the receiver unit captures the laser beam and analyzes its position. As the coil progresses through the inspection area, the receiver unit determines the deviation of the laser beam from the desired straight line. This is accomplished by analyzing the position of the laser beam at multiple points along the width of the coil. The laser alignment system is connected to a computerized control system that processes the data obtained from the receiver unit. The control system performs intricate calculations to determine the straightness of the coil based on the position of the laser beam. Any variations or deviations from the desired straight line are recorded and thoroughly examined by the control system. The inspection data can be viewed in real-time, enabling operators to monitor the straightness of the steel coil during the inspection process. The use of laser alignment technology for steel coil inspection offers numerous benefits. It provides highly precise measurements, ensuring that even slight deviations from straightness are detected. Furthermore, the non-contact nature of laser alignment eliminates the need for physical contact with the coil, thus reducing the risk of damage or contamination. Additionally, the automated process saves time and enhances efficiency compared to manual inspection methods. In conclusion, laser alignment technology is a dependable and efficient method for inspecting the straightness of steel coils. It guarantees that only coils meeting the required straightness criteria are approved, thereby contributing to the quality control of steel manufacturing processes.

Q:How are steel coils used in the production of storage tanks and silos?: Steel coils are an essential component in the production of storage tanks and silos due to their strength and durability. These coils are typically made from high-quality steel and are processed through various manufacturing techniques to attain the desired thickness and shape. In the production process, steel coils are first uncoiled and then cut into specific sizes and lengths to meet the requirements of the storage tank or silo design. The coils are then shaped into cylindrical sections, using bending and rolling machines, to create the main body of the tank or silo. Once the desired shape is achieved, the coils are welded together to form a continuous and secure seam. This welding process ensures that the tanks and silos are leak-proof and can withstand the pressure exerted by the stored materials. Furthermore, steel coils also play a crucial role in reinforcing the structure of storage tanks and silos. They are often used to create the roofs, bottoms, and other structural components of these storage units. The strength and resilience of steel make it ideal for withstanding the weight of the stored materials and any external forces that may be exerted on the tank or silo. Additionally, steel coils can be coated or treated with protective materials to enhance their resistance to corrosion and extend their lifespan. This is particularly important for storage tanks and silos that are used to store corrosive substances or are exposed to harsh environmental conditions. Overall, steel coils are a fundamental element in the production of storage tanks and silos, providing the necessary strength, durability, and structural integrity required for these storage units.

Q:gigantic navy ships made of steel float, why??: Believe it or not - A steel boat floats for the exact same reason all boats float. And the very best - easy to understand explanation of this (with pictures) is at the link below.

Q:How are steel coils used in the packaging industry?: Steel coils are used in the packaging industry primarily for the production of metal strapping and seals. These coils are unwound and processed to create strong and durable strapping materials that are used to secure and bundle various types of packaging, such as boxes, crates, and pallets. The steel coils provide excellent tensile strength and resistance to breakage, making them ideal for ensuring the safe transportation and storage of goods.

Q:How do steel coils contribute to the manufacturing of electrical appliances?: Steel coils are essential components in the manufacturing of electrical appliances as they are used to create the core of transformers and electromagnets. These coils, made from steel, provide the necessary magnetic field required for the functioning of electrical appliances such as refrigerators, televisions, and washing machines.

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