Cold Rolled Steel Sheets and Coils of Good Quality

Cold Rolled Steel Sheets and Coils of Good Quality System 1

Cold Rolled Steel Sheets and Coils of Good Quality

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 100000 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 Sheets and Coils of 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:

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 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.

3.What advantages does your company have？

Cement : Annual capacity of 400 million tons, No. 1 in the world

Fiberglass: Annual capacity of 1 million tons fiberglass, No. 1 in the world.

Composite Materials — Carbon Fiber: Annual capacity of 10,000 tons PAN precursor and 4,000 tons carbon fiber, No. 1 in China

Composite Materials — Rotor Blade: Annual production capacity of 15,000 pieces, No.1 in China, Top3 worldwide

Glass: CNBM owns about 20 modern float glass product`ion lines, With annual capacity of 10 million square meters glass.

Light Weight Building Materials: Annual capacity of 1.65 billion square meters of gypsum board, No. 1 in the world.

Commercial concrete: Annual capacity of 0.35 billion cubic meters, No. 1 in the world.

Refractory Material: Annual capacity of 40,000 tons casting refractory, No.1 in the world.

Q: How are steel coils inspected for oil or rust residues using chemical analysis?: Chemical analysis techniques can be employed to inspect steel coils for the presence of oil or rust residues. One widely used method is Fourier transform infrared spectroscopy (FTIR), which involves subjecting a small sample of the steel coil to infrared radiation and analyzing the resulting infrared spectrum. By identifying specific chemical bonds indicative of oil or rust residues, this technique can effectively detect their presence. For oil residue detection, a common approach is to examine the FTIR spectrum for a peak at approximately 2920 cm-1, which corresponds to the stretching vibration of C-H bonds in hydrocarbon chains. The observation of this peak signifies the existence of oil residues on the steel coil. To identify rust residues, the FTIR spectrum is scrutinized for characteristic peaks associated with iron oxide or hydroxide compounds. For instance, the presence of a peak at around 560 cm-1 suggests the presence of iron oxide (FeO) or iron hydroxide (Fe(OH)3). Apart from FTIR analysis, other chemical analysis techniques like X-ray fluorescence spectroscopy (XRF) or energy-dispersive X-ray spectroscopy (EDX) can also be employed. These methods provide information about the elemental composition of the steel coil, enabling the identification of specific elements linked to oil or rust residues, such as carbon or iron. In essence, the chemical analysis of steel coils for oil or rust residues offers a dependable and precise means of ensuring the coils' quality and cleanliness before further processing or utilization.

Q: I am looking at website on google based on the terms structural steel fabrication and simply steel fabricationI know that there must be a difference between the two terms, but it seems that many website authors use the two terms interchangeably.Do you know the key differences between the two terms?: Steel fabrication can include any kind of manufacture of steel. Structural steel is a narrow subset which would include, for example, I-beams and would not usually include stainless steel, sheet steel, rolled steel, etc.

Q: I am buying a knife for my future husband for his wedding gift and I was wondering what is better carbon steel or stainless steel?: The better grade of stainless is the top choice, but it can be hard to find, and expensive. - Surgical scalpels are made of it. (Common '420' stainless will not hold an edge as well as high carbon steel.)

Q: I have lung cancer. My doctor told me to invest in stainless steel pots to cook with, instead of magnalite. What's the difference between the all stainless steel pots and the Hard-Anodized pots? and are there any stainless steel pots that are nonstick?: The difference in stainless steel cookware is the amount of different metals used when making them. 18-10 is the best combination. I have Tramontina SS pots and pans and love them. Nice heavy bottoms that evenly heat. Getting used to cooking with stainless is a bit difficult. You need to start with high heat and then turn it down when you add ingredients. This assists in food not sticking.

Q: How does the steel coil market vary regionally?: The steel coil market varies regionally due to several factors such as the level of industrialization, economic development, and the specific demands and requirements of each region. In developed regions such as North America and Europe, the steel coil market is relatively mature and highly competitive. These regions have well-established manufacturing industries and infrastructure, which create a strong demand for steel coils for various applications such as automotive, construction, and machinery. The market in these regions is driven by factors like technological advancements, product innovation, and the need for high-quality materials. On the other hand, developing regions such as Asia-Pacific, Latin America, and Middle East & Africa experience rapid industrialization and urbanization, driving the demand for steel coils. These regions have growing construction sectors, booming automotive industries, and increasing infrastructure projects, which contribute to the rising demand for steel coils. Additionally, the availability of low-cost labor and raw materials in some of these regions makes them attractive for steel coil production. Furthermore, the regional variations in regulations and trade policies also impact the steel coil market. Tariffs, import/export restrictions, and government initiatives to promote domestic production can affect the market dynamics. For instance, protectionist measures like trade barriers or anti-dumping policies can limit the import of steel coils, leading to increased domestic production and regional market growth. Moreover, geographical factors and climate conditions can also influence regional steel coil markets. Coastal regions with high humidity levels and exposure to saltwater require specialized corrosion-resistant steel coils, while inland regions with extreme temperatures may demand coils with specific mechanical properties to withstand such conditions. Overall, the steel coil market varies regionally due to differences in industrialization, economic factors, specific demands, regulations, and geographical considerations. Understanding these variations is crucial for steel coil manufacturers, suppliers, and consumers to effectively navigate the market and capitalize on the opportunities available in each region.

Q: How are steel coils inspected for dimensional accuracy during processing?: Steel coils are inspected for dimensional accuracy during processing through a combination of manual measurements, visual inspections, and advanced technology such as laser sensors or 3D scanning systems. These methods ensure that the coils meet the required specifications and tolerances for their intended applications.

Q: case hardening steel is adviced or thru hardening steel is most suitable?: I don't know your application, but here is some advice. Case hard provides a hard shell around soft steel, depending on the bake, the case is usually .002-.008 thick. (thousands of an inch) Heat treated steel or tool steel is hard all the way thru. Case hardening, provides toughness with flexibility, however, once it's compromised, the part is scrap. Hardend tool steel is extreemly hard throughout and the harder it is, the more brittle it becomes. The application of the part will help you to determine the material needed. For instance; Plastic injection molds are very hard so the hot plastic wont erode them over years of use. Punch Press dies aren't as hard but are tougher to withstand the shock. Machine bolts are case hardened so they can last, but soft enough to allow some stretching during tightening. Either way, the time in mfg will be about the same. Most tool steels today cut like cheese, but take time to be heat treated. Tool steel will cost a bit more than low carbon steel. Low carbon steel is as machinable, and cheaper, but, again, the baking period is as long or longer than tool steel. There are a lot of materials on the market today that maintain the durability of heatreated steel without having to go thru that process. 4140, ( or chrome/moly) comes to mind. There are also some 400 series stainless that work as well, and others. You need to determine strength, flexibility, ease of mfg, cost and repairability when considering which steel to use.

Q: so my parents gave me stainless steel cookware for christmas and the first time i used it i cooked chicken. it stuck to the pan and where the oil splattered it cooked on and turned it dark black and brownish. and the bottom too. i don't cook with it because i don't want to burn it on anymore but i don't know how to clean it. how do i cook without burning anything, aside from a lower flame and how on earth do i get the stains on. i've tried almost everything too! thanks.: Dear pwrgrlmanda, I also use stainless steel. I have found the best way to clean any cookware that has food baked or cooked on it is by filling my sink with the hottest water possible, submerging the entire piece of cookware in the sink and then liberally sprinkling cascade powder over the top. Allow it to set overnight and usually in the morning everything will come off with a nylon scrubber. It really works! No more elbow grease. This also works for corning ware, glass baking pans, cookie sheets etc. Hope it works for you.

Q: What could the impurities in steel wool be?And why are they there?Thanks for your help :): Impurities in steel wool would be of the elemental type. I'm sure steel wool is a mixture of different low grade not good for much of anything else materials. There may be excessive impurities such as lead, cobalt, boron, aluminum etc... in the steel wool. There may also be solvent residue on the wool i.e cleaner, lubricant etc.. I'm sure every batch is different - I know the iron level is high thats what makes them rust quickly.

Q: How are steel coils used in the manufacturing of intake manifolds?: Steel coils are typically used in the manufacturing of intake manifolds as the primary material for forming the manifold's structure. These coils are shaped and cut into specific dimensions to create the necessary components, such as runners and plenums, which help regulate the flow of air and fuel mixture into the engine. The steel coils are often subjected to additional processes, including welding, machining, and surface treatments, to ensure the final intake manifold meets the required specifications and performance standards.

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