Cold Rolled Steel Coil--Excellent Heat Resistance Performance

Cold Rolled Steel Coil--Excellent Heat Resistance Performance System 1

Cold Rolled Steel Coil--Excellent Heat Resistance Performance

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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 Coil--Excellent Heat Resistance Performance：

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 ：

• Excellent process capability

• Smooth and flat surface

• Workability, durability

• Excellent heat resistance performance

3. Cold Rolled Steel Images

Cold Rolled Steel Coil--Excellent Heat Resistance Performance

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

FAQ ：

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.

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 different methods of engraving steel coils?: There are several different methods of engraving steel coils, each with its own advantages and applications. Some of the most common methods include: 1. Chemical Etching: This is a process that involves applying a chemical solution to the surface of the steel coil, which selectively removes the metal to create the desired design. Chemical etching is highly precise and can produce intricate patterns and fine details. It is commonly used for decorative purposes, such as creating logos or patterns on steel coils. 2. Laser Engraving: Laser engraving uses a high-powered laser beam to remove the top layer of the steel coil, creating a permanent mark. This method offers high precision and allows for the engraving of complex designs, logos, or text. Laser engraving is frequently used for branding purposes or to add identification marks to steel coils. 3. Mechanical Engraving: Mechanical engraving involves the use of a cutting tool or a diamond-tipped stylus to physically remove the metal from the steel coil's surface. This method is known for its durability and versatility, as it can create deep and long-lasting engravings. Mechanical engraving is often used for industrial applications, such as adding serial numbers, part codes, or other identification marks to steel coils. 4. Electrochemical Etching: Electrochemical etching, also known as electrolytic etching, utilizes an electric current to selectively dissolve the metal surface of the steel coil. This technique is commonly used for marking and branding purposes, as it can produce high-quality, permanent engravings. Electrochemical etching is often employed in industries where precision and durability are essential, such as aerospace or automotive manufacturing. 5. Inkjet Printing: While not strictly engraving, inkjet printing is a method that can be used to add patterns or designs onto steel coils. This process involves using specialized inks and a digital printing system to apply the desired design directly onto the surface of the coil. Inkjet printing is versatile, cost-effective, and allows for high-resolution prints, making it suitable for various applications, including decorative or branding purposes. In conclusion, the different methods of engraving steel coils offer a range of options for creating permanent markings, logos, or patterns. The choice of method depends on factors such as the desired level of precision, durability requirements, and the specific application for the steel coil.

Q: I understand that Stainless Steel is a low carbon steel having minimum 10.5% chromium content in it there r 60 different type of stainless steel. Kindly informa) Is this info correct?????b) Which stainless steel can get rusted or can have superficial rust????: Stainless steel is a generic term for a whole range (there are more than 60 types) of Fe-Cr alloys. They all contain some amount of C and some alloys include a good number of other alloying elements. In almost all cases, the materials have corrosion resistance due the Cr atoms that are in solid solution with the Fe matrix. Under corrosive conditions, the Cr forms a thin tight coherent layer of Cr-oxide. This Cr oxide coating prevents further corrosion so long as it is not chemically or physically removed. If the SS has been subject to mechanical abrasion, the corrosion resistance can sometimes be restored by a light exposure to nitric acid which passivates the surface, restoring the Cr-oxide layer. The carbon content is an important factor in corrosion preformance but so is the heat treatment. Under the wrong conditions and in different environments, all SSs can rust. One of the most common corrosion problems is sensitization which occurs in the heat affect zone (HAZ) around welds. If the C content is high enough and the heat is high enough, the Cr atoms in solid solution form Cr-carbides and are no longer available to form a protective Cr-oxide. The corrosion resistance can be restored by appropriate heat treatment.

Q: What are the common surface defects in steel coils?: Common surface defects in steel coils include scratches, pits, indentations, stains, and rust spots. Scratches can occur during handling or processing of the steel coils and can vary in depth and length. Pits are small depressions on the surface of the coil and can be caused by impurities in the steel or during the manufacturing process. Indentations are similar to pits but are usually larger and more noticeable. Stains can be caused by various factors such as chemicals, water, or other contaminants coming into contact with the steel surface. Rust spots occur when the steel is exposed to moisture or corrosive elements, leading to the formation of iron oxide. These defects can affect the appearance, quality, and performance of the steel, and it is important to address them to ensure the desired end-use of the coils.

Q: What are the various surface finishes available for steel coils?: There are several surface finishes available for steel coils, each with its own unique properties and applications. Some of the most commonly used surface finishes for steel coils include: 1. Hot rolled: This finish is achieved by rolling the steel at high temperatures, which creates a rough, scale-like surface. Hot rolled coils are typically used for structural applications, such as construction materials and industrial machinery. 2. Cold rolled: In contrast to hot rolled coils, cold rolled coils are rolled at room temperature, resulting in a smoother and more refined surface. Cold rolled steel is often used in automotive and appliance manufacturing due to its superior surface finish and dimensional accuracy. 3. Galvanized: Galvanizing is a process that involves coating steel with a layer of zinc to protect it from corrosion. Galvanized steel coils have a shiny, metallic appearance and provide excellent corrosion resistance, making them suitable for outdoor applications, such as roofing, fences, and gutters. 4. Electro-galvanized: Similar to galvanized steel, electro-galvanized coils are also coated with a layer of zinc. However, the coating thickness is typically thinner and achieved through an electroplating process. Electro-galvanized steel coils offer good corrosion resistance and are commonly used in the manufacturing of electrical appliances, automotive parts, and construction components. 5. Pre-painted: Pre-painted steel coils are coated with a layer of paint or polymer film on the surface. This finish provides both protection against corrosion and aesthetic appeal, allowing for a wide range of color options. Pre-painted steel coils are extensively used in the construction industry for applications like roofing, cladding, and wall panels. 6. Stainless steel: While not technically a surface finish, stainless steel coils have their own unique properties that make them suitable for various applications. Stainless steel coils are highly resistant to corrosion, heat, and chemical damage, making them ideal for industries such as food processing, medical equipment, and marine applications. These are just a few examples of the various surface finishes available for steel coils. The choice of finish depends on factors such as the intended application, desired appearance, and level of corrosion resistance required.

Q: How are steel coils inspected for dimensional accuracy during processing?: Steel coils are inspected for dimensional accuracy during processing using various methods such as laser measuring systems, ultrasonic thickness gauges, and calipers. These tools are used to measure the width, thickness, and diameter of the coils to ensure they meet the required specifications. Additionally, visual inspections are also conducted to identify any irregularities or defects in the coils.

Q: They both sell the same thingIf prices are to high companies won't by the steelIf prices are to low then the steel company won't earn enoughWhy are some steel companies more successful than others: Steel is a global commodity. There is some variety in product (flat rolled, tubing, etc), but basically the same product worldwide. Cost to the customer includes shipping of a very heavy product. Inputs are also heavy and costly to ship. Inputs: - Coal - Iron Ore. Some firms have the ability to recycle old steel, a competitive advantage. - Energy (very energy intensive industry) - Labor - Machinery. A new blast furnace is more efficient than 50 years old. So the most profitable steel firms have some of these characteristics: - Proximity to raw materials - Proximity to customers - Access to cheaper means of transportation; rail and sea - Newer machinery - Cheaper labor force - Reasonable cost for electricity and fuel for furnaces

Q: How are steel coils protected against corrosion?: Steel coils are protected against corrosion through various methods such as applying protective coatings, galvanizing, or using corrosion inhibitors. These measures help to create a barrier between the steel surface and the surrounding environment, preventing the onset of corrosion and extending the lifespan of the coils.

Q: and what are the four main elements in STAINLESS steel? x: Very high carbon steel (0.96 to 2.11%) is hard and not very ductile (difficult to mold or shape). It is also difficult to weld, but has the lowest melting point. As the carbon content is reduced, the steel becomes softer, more ductile and melts at a higher temperature. Stainless steel is an alloy of Iron, Carbon, Chromium. The fourth element would depend upon the grade of steel, but Nickel is probably the most common.

Q: can you play one?: Yessir. No, I can only play a piano and Guitar Hero.

Q: What are the different coil winding methods used for steel coils?: The different coil winding methods used for steel coils include cross-winding, helical winding, and layer winding. Cross-winding involves winding the steel coil in a crisscross pattern to ensure even distribution of the material. Helical winding involves winding the steel coil in a spiral pattern, which provides strength and stability to the coil. Layer winding involves winding the steel coil in layers, with each layer placed on top of the previous one, ensuring efficient use of space and easy unwinding of the coil.

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