Cold Rolled Steel Coil JIS G 3302 -Chinese Best in Low Price

Cold Rolled Steel Coil JIS G 3302 -Chinese Best in Low Price System 1

Cold Rolled Steel Coil JIS G 3302 -Chinese Best in Low Price

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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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Cold Rolled Steel Coil JIS G 3302 -Chinese Best in Low Price

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 JIS G 3302 -Chinese Best in Low Price

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: How are steel coils used in the production of metal roofing?: Steel coils are used in the production of metal roofing by being fed through a series of machines that shape, cut, and coat the steel to create the final roofing product. The coils are uncoiled and flattened, then formed into the desired profile using roll forming machines. The formed sheets are then cut into specific lengths and coated with protective layers to enhance durability and corrosion resistance. These coated steel sheets are then packaged and shipped to construction sites for installation as metal roofing.

Q: What are the main characteristics of steel coils?: The main characteristics of steel coils include their high strength and durability, flexibility, corrosion resistance, and ability to be easily formed and shaped. They are also known for their uniformity, as they are typically manufactured to precise dimensions and tolerances. Additionally, steel coils have excellent conductivity properties and are commonly used in various industries such as automotive, construction, and manufacturing.

Q: What are the different thickness tolerances for steel coils?: The different thickness tolerances for steel coils can vary depending on the specific requirements and industry standards. However, some common thickness tolerances for steel coils include: - Standard Tolerance: This tolerance typically ranges from ±0.005 inches to ±0.010 inches, meaning that the actual thickness of the steel coil can deviate within this range from the specified thickness. - Tighter Tolerance: In some cases, stricter tolerances may be required, especially for critical applications or industries. Tighter tolerances can range from ±0.002 inches to ±0.005 inches, ensuring a more precise thickness control for the steel coils. - Custom Tolerance: Depending on the specific needs of a project or customer, custom thickness tolerances can be defined. These tolerances can be either looser or tighter than the standard or tighter tolerances, depending on the application and the desired level of precision. It is important to note that different industries and applications may have their own specific tolerance requirements. For instance, industries like automotive or aerospace may require tighter tolerances due to the critical nature of their applications, while other industries may accept looser tolerances. Additionally, the specific type of steel being used can also impact the acceptable thickness tolerances. Therefore, it is crucial to consult the relevant industry standards and specifications to determine the appropriate thickness tolerances for steel coils in a particular application.

Q: What are the dimensions of steel coils used in the metalworking tool industry?: The dimensions of steel coils used in the metalworking tool industry vary depending on the specific requirements of the tool being manufactured. However, common dimensions for steel coils in this industry range from 0.5 to 3 millimeters in thickness and 1000 to 2000 millimeters in width.

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: I also heard Stainless holds up better againts rust, blue steel needs more care.: Stainless steel requires less maintenance, but I've got a K-38 Combat Masterpiece from 1974. Back then SW used the real blueing process, and the blue steel looks like its a foot deep. Probably the best looking gun in the accumulation. Still new in the box, never fired. Its my Vietnam tribute gun, same one I carried as a Security Policeman in the Air Force from 1969-1971.

Q: How are steel coils inspected for hardness using hardness testers?: To assess the strength and durability of steel coils, hardness testers are employed to examine their hardness. Hardness testers are specialized devices used to gauge a material's resistance to indentation or penetration. For steel coils, Rockwell or Brinell testers are commonly utilized. Both methods entail exerting a precise force onto the surface of the coil and measuring the depth of indentation or size of the impression made. In the case of Rockwell testing, a steel ball or diamond cone is pressed onto the coil's surface with a predetermined force. The depth of penetration is then measured and compared to a standardized scale in order to determine the hardness value. Different scales are employed based on the size and type of indenter in use. On the other hand, Brinell testing involves using a spherical indenter made of tungsten carbide or hardened steel. This indenter is pressed onto the coil's surface with a known force, and the resulting indentation is measured and compared to a standardized table to determine the hardness value. Both methods provide a quantitative measure of the steel coil's hardness, which serves as an indicator of its ability to resist deformation, wear, and cracking. The hardness test results are subsequently utilized to ensure that the steel meets specific quality standards or customer requirements. It is important to note that the inspection process may involve sampling, where representative sections of the steel coil are tested, or it may involve testing the entire coil, depending on the specific inspection requirements. Additionally, accurate and reliable results necessitate proper calibration and maintenance of the hardness testers.

Q: What are the different types of steel coil slitting machines?: There are several types of steel coil slitting machines, including rotary slitters, loop slitters, and stationary slitters. Rotary slitters use rotating circular blades to cut the coils into desired widths, loop slitters use a looping process to cut the coils, and stationary slitters use stationary blades to slit the coils. Each type of machine has its own advantages and is suitable for different applications.

Q: Are steel coils used in shipbuilding?: Yes, steel coils are commonly used in shipbuilding. They are primarily used to manufacture various structural components and hull sections of ships due to their strength, durability, and resistance to corrosion.

Q: We all know that when we drop a small steel ball (size 3mm diameter; weight 1.10 grams) and a paper (size 11.7 inches length and 8.3 inches breadth; weight 4.5 grams) from a height. The steel ball will win the race to the ground due to its aerodynamic structure.Now imagine the same steel ball with the same weight converted to the structure similar that of paper. What will be the result? Which object will fall first; steel sheet or paper?: In okorder /... 11.7x8.3 inch paper 97.11 square inches 0.062651488 sq meters at 4.5gm is a non-standard 19 pound bond ledger paper, but that is OK, because at least it is in range. 38 gauge steel sheets are about the thinnest that hold their structure 0.00625 thick 1221 g/m? or, at 11.7x8.3 76.5grams So, with this data at hand we can better visualize the situation. Paper of 0.00625 thick in the size shown is 35# paper 131.68 g/m? 8.25grams Steel is higher in density than paper, so you cannot get the same size and air flow without it being lighter in weight than the steel and the air resistance would be lower for the heavier item, so steel of the same shape and thickness as paper falls faster. Suppose you want paper heavier than steel for the same area, then the thickness increases. Will a steel sheet 0.00625 thick and 11.7x8.3 inch size 76.5gm fall faster or slower than a 9 or 10 times thicker paper sheet? If it was able to hold flat in each type the thicker paper should get more backflow behind it aerodynamically and fall faster than an equal weight thinner steel sheet as my guess, but I don't have those numbers. The steel will always be heavier than the paper for the same exact shape and thickness by about 9x. My answer here is difficult, but the question has some flaws to think about.

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