Cold Rolled Steel Coil JIS G 3302--Chinese Best with Best Quality

Cold Rolled Steel Coil JIS G 3302--Chinese Best with Best Quality System 1

Cold Rolled Steel Coil JIS G 3302--Chinese Best with Best Quality System 2

Cold Rolled Steel Coil JIS G 3302--Chinese Best with Best Quality System 3

Cold Rolled Steel Coil JIS G 3302--Chinese Best with Best Quality

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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 with Best Quality

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 with Best Quality

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 is stainless steel made? what are the things used in making it?: There are 3 basic stainless steels. The Martinsitic, the ferritic, and the Austinistic. The spelling may be wrong on all of them. (Got out of school in 1966 with my metallurgy in 1965. The Ferritic is magnetic and has some resistance to corrosion but the Martinsitic is much more resistant to corrosion. The Austinitic stainless is very resistant to corrosion. The differences are the amount of Chrome and Nickel in the batches. The Austinitic has an 18/8 ratio of Chromium and Nickel with the rest Iron and minor ingredients. The carbon content is very important and these steels are often made in small batches with close monitoring of composition and carbon content. Scrap metals are frequently used with the chrome and nickel being added as carefully selected scrap or even fresh crude stocks. Electric melting is frequent to avoid contamination.

Q: it isn't a SIGG water bottle or any other brand, as it's from thingsengraved what I'm wondering is, is this just as good as a SIGG water bottle, or is there any difference?: Stainless steel is one of the best products to use for anything associated with food. It can be sterilized, it won't stain or absorb odors, it can be recycled and much of it is made of recycled material. If you take care of it, it can last a lifetime. We get hung up on brand names, you should look at the material it is made of. Which is a quality grade of stainless steel. I couldn't find the grade on the Sigg site, but I would think it would be the same or very similar. So, all that to say, this one seems to be as good as a Sigg.

Q: Can steel coils be coated with scratch-resistant materials?: Yes, steel coils can be coated with scratch-resistant materials. These coatings are typically applied to the surface of the steel coils to enhance their durability and protect them from scratches and abrasions.

Q: What are the different methods of surface treatment for steel coils?: There are several different methods of surface treatment for steel coils, each with its own benefits and applications. Some of the most common methods include: 1. Hot-dip galvanizing: This is a process where the steel coil is immersed in a bath of molten zinc, which forms a protective coating on the surface. Hot-dip galvanizing provides excellent corrosion resistance and is commonly used in outdoor applications such as roofing, fencing, and automotive parts. 2. Electro-galvanizing: In this method, a thin layer of zinc is electroplated onto the surface of the steel coil. Electro-galvanizing offers similar corrosion resistance as hot-dip galvanizing, but with a thinner coating. It is often used in applications where a smooth and aesthetically pleasing finish is desired, such as appliances, electrical equipment, and automotive components. 3. Powder coating: Powder coating involves applying a dry powder to the surface of the steel coil, which is then cured under heat to form a durable and protective layer. This method provides excellent resistance to chipping, scratching, and fading, making it suitable for a wide range of indoor and outdoor applications. 4. Painting: Steel coils can also be treated with conventional liquid paint coatings, which provide both protection and aesthetic appeal. Paint coatings can be customized to meet specific requirements such as corrosion resistance, UV protection, or chemical resistance. They are commonly used in industries such as construction, automotive, and appliances. 5. Pickling and oiling: This method involves removing any scale or rust from the surface of the steel coil by dipping it in an acid solution (pickling), followed by a coating of oil to prevent reoxidation. Pickling and oiling are typically used for temporary corrosion protection during storage and transportation of steel coils. 6. Pre-painted coatings: Steel coils can be coated with pre-painted finishes at the manufacturing stage. Pre-painted coatings are applied in a continuous process, where the steel coil is passed through a coating line, and a layer of paint is applied. This method provides a wide range of colors and finishes, making it popular in the construction, automotive, and appliance industries. These are just a few of the methods commonly used for surface treatment of steel coils. The choice of method depends on factors such as the desired level of corrosion resistance, aesthetics, environmental conditions, and the specific application requirements.

Q: I was wondering because i just watched an episode of build it bigger on the discovery channel about the uss George bush, and when they were discribing it they said it was 500 tons of steel and 47,000 tons of aluminum. this kinda struck me as odd because i thought that it was mostly made of steel. and i would think that even if it was mostly aluminum, that the hull would be steel. and i think the hull would weigh more than 500 tons.: The hull is steel the island is an aluminum composite. Carriers are 100,000 tons of Diplomatic Diplomacy!

Q: How are steel coils inspected for coil weight accuracy after processing?: Steel coils are inspected for coil weight accuracy after processing through the use of weighing scales or load cells. These devices measure the weight of the coil and compare it to the predetermined weight specifications. If the weight falls within the acceptable range, the coil is deemed accurate.

Q: How do steel coils contribute to the aerospace industry?: Steel coils contribute to the aerospace industry by being used in the manufacturing of various aircraft components such as engine parts, landing gear, and structural elements. The high strength and durability of steel make it a preferred material for these applications, ensuring the safety and reliability of aircraft. Additionally, steel coils are also used in the production of specialized tools and equipment required for aerospace manufacturing processes.

Q: What are the different types of corrosion protection for steel coils?: There are several different types of corrosion protection for steel coils, including galvanizing, paint coatings, organic coatings, and metallic coatings. Each method provides a barrier between the steel surface and the corrosive environment, preventing or slowing down the corrosion process. Galvanizing involves applying a layer of zinc to the steel surface, while paint coatings use various types of paints or primers. Organic coatings utilize polymers or resins to form a protective layer, and metallic coatings such as tin or aluminum can also be applied. The choice of corrosion protection method depends on factors such as the specific corrosive environment, desired lifespan, and cost considerations.

Q: What are the common welding defects in steel coils?: During the welding process, various defects can occur in steel coils. These defects encompass: 1. Porosity: Gas entrapment during welding results in small holes or voids in the weld metal. This defect weakens the weld and increases its vulnerability to corrosion. 2. Insufficient fusion or incomplete penetration: Inadequate fusion between the base metal and weld metal or incomplete penetration of the joint leads to this defect. A weak or brittle weld is the consequence. 3. Cracks: Cracks can manifest in the weld metal or the heat-affected zone (HAZ) of the base metal. They are caused by factors like high stress levels, improper cooling, or insufficient preheating. Cracks significantly reduce the weld's strength and integrity. 4. Undercutting: Excessive melting of the base metal at the weld's toe creates a groove or depression known as undercutting. This defect weakens the weld and concentrates stress, potentially leading to failure. 5. Excessive spatter: The welding arc expels small droplets of molten metal, which can land on the steel coil's surface. Too much spatter results in a rough or uneven surface finish and necessitates additional cleaning or grinding. To minimize these welding defects in steel coils, it is vital to ensure proper weld preparation, including thorough cleaning to remove any contaminants from the steel's surface. Moreover, utilizing the correct welding parameters, such as appropriate heat input and travel speed, helps minimize defects. Regular inspection and quality control measures also aid in detecting and addressing defects before they escalate into more serious issues.

Q: How are steel coils used in the manufacturing of doors and windows?: Steel coils are used in the manufacturing of doors and windows by being processed into flat sheets or strips, which are then cut, shaped, and formed into various components such as frames, panels, and reinforcements. The steel coils provide strength, durability, and stability to the final products, ensuring high-quality doors and windows that can withstand different weather conditions and provide security to buildings.

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