High Quality of Cold Rolled Steel Coil in China

High Quality of Cold Rolled Steel Coil in China System 1

High Quality of Cold Rolled Steel Coil in China System 2

High Quality of Cold Rolled Steel Coil in China

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 100 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. 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

High Quality of Cold Rolled Steel Coil in China

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:

0.150

0.476

11.231

12.50

0.900

0.039

0.010

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 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.

3. 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: I'm talking about the sort of carbon fiber that's used in the auto industry (mostly in supercars).If an object made of steel were to be copied by an exact same object, but made of carbon fiber - how lighter would the carbon fiber object be?For example, if a table is made of steel and it weighs X, how much will it weigh if it were made of carbon fiber?Thanks.: Carbon fiber doesn't really refer to a single material (steel doesn't either, but most steels have similar densities). Pure carbon fiber is just that, fibers made of 90+% carbon. Carbon fiber in the context of cars usually refers to carbon fiber-reinforced polymers rather than plain woven fibers. The polymer adds rigidity to what would otherwise just be like a sheet of fabric. The density depends on the polymer used and the ratio of polymer:fiber. For 50% fiber by volume in epoxy, it has a density of 1.6 g/cm^3. Steel has a density of ~7.8 g/cm^3. So, by volume, steel is almost 5 times heavier.

Q: What are the common coil finishes available for steel coils?: Steel coils can be finished in various ways to serve different purposes and achieve different aesthetic appearances. Some popular coil finishes include: 1. Hot-dip galvanized: By immersing the steel coil in molten zinc, a protective layer is formed on its surface. This finish is ideal for outdoor applications like roofing, fencing, and automotive parts due to its excellent corrosion resistance. 2. Galvannealed: Achieved by annealing the hot-dip galvanized coil, this finish gives a matte gray appearance. Galvannealed coils have enhanced paint adhesion, making them suitable for subsequent painting or powder coating in applications like appliances and furniture. 3. Electro-galvanized: A thin layer of zinc is electroplated onto the surface of the steel coil in this process. Electro-galvanized finishes offer good corrosion resistance and are commonly used indoors, such as in electrical enclosures, HVAC systems, and automotive components. 4. Pre-painted or coated: These finishes involve applying a layer of paint or a coating system to the steel coil, improving its appearance and providing extra protection. Pre-painted coils are extensively used in construction, appliances, and automotive industries due to their aesthetic appeal and corrosion resistance. 5. Bare or mill finish: This refers to the untreated, raw steel coil without any additional coatings or finishes. Bare steel coils are commonly used in applications where corrosion resistance is not the main concern, such as structural components, pipes, and tubes. These are just a few examples of the many coil finishes available for steel coils, each offering unique properties and advantages depending on the intended use. Carefully considering the specific requirements of the application is important when choosing the most suitable coil finish.

Q: How are steel coils inspected for quality control?: Steel coils are inspected for quality control through a series of rigorous tests and inspections. This typically involves visual checks for any surface defects, such as scratches or dents, as well as measurements of dimensions, weight, and thickness. Additionally, non-destructive testing techniques like ultrasonic or magnetic particle testing may be conducted to detect internal flaws or inconsistencies in the steel. These comprehensive inspections ensure that only high-quality steel coils are approved for use.

Q: What is the strongest steel ever made.: tungsten steel

Q: what is the difference between stainless steel 304 (AISI 304) and stainless steel 310 (AISI 310) COR-TEN A: Weathering steel will rust, but the rust will be adherant and not flake off and be replaced by new rust. Therefore once it rusts it will pretty much stop rusting any more. One (severe) down side is that anything around it will be streaked with rust stains and it will look awful. Some bozo with the Texas Department of Transportation designed a number of freeway interchange overpasses here in Houston using Cor-Ten steel and all of the concrete supports are streaked with red rust stains and it looks like hell. Cameron built an office building here in Houston with a Cor-Ten facade and it is streaked with rust too. They should have gone ahead and spent the money and painted them, but they didn't.

Q: What are the dimensions of steel coils used in the electrical equipment industry?: The dimensions of steel coils used in the electrical equipment industry can vary depending on the specific application and requirements of the equipment being manufactured. However, there are some common dimensions that are frequently used in this industry. Typically, the width of steel coils used in electrical equipment manufacturing ranges from 0.5 inches to 72 inches (1.27 cm to 182.88 cm). The thickness of these coils can vary from as thin as 0.005 inches (0.0127 cm) to as thick as 0.25 inches (0.635 cm). The length of steel coils used in the electrical equipment industry can also vary, but it is often determined by the manufacturing process and the specific equipment being produced. Coils can range from a few feet to several hundred feet in length. Furthermore, the weight of steel coils can vary depending on their dimensions and the type of steel being used. For instance, a common weight range for steel coils used in the electrical equipment industry is between 5,000 pounds (2,268 kg) and 50,000 pounds (22,680 kg). It is important to note that these dimensions are not fixed and can vary based on the specific needs of the electrical equipment industry. Manufacturers may have their own unique specifications and requirements for the steel coils they use in their products.

Q: How do steel coils contribute to durability and longevity in products?: Steel coils contribute to durability and longevity in products mainly due to their strength, stability, and corrosion resistance. Firstly, steel is renowned for its exceptional strength, making it an ideal material for various applications where durability is crucial. Steel coils, which are essentially tightly wound rolls of steel, provide added strength and structural integrity to products. The stability offered by steel coils is another key factor in enhancing the durability of products. The tightly wound structure of the coils ensures they maintain their shape and resist deformation under heavy loads or extreme conditions. This stability is particularly important in industries such as construction and automotive, where products need to withstand rigorous usage over extended periods. Moreover, steel coils possess exceptional corrosion resistance properties, primarily due to the presence of protective coatings. These coatings, such as zinc or other metallic alloys, act as a barrier against moisture and environmental elements that can cause rust and degradation. By preventing corrosion, steel coils help prolong the lifespan of products, making them more durable and reliable. Additionally, steel coils can be customized to meet specific requirements, such as different thicknesses, widths, or surface finishes. This versatility allows manufacturers to tailor the steel coils to their desired application, ensuring optimal performance and longevity in their products. In summary, steel coils contribute to durability and longevity in products through their strength, stability, corrosion resistance, and customization capabilities. By incorporating steel coils into various industries and applications, manufacturers can ensure their products withstand the test of time, ultimately benefiting consumers with longer-lasting and more reliable products.

Q: How are steel coils used in the manufacturing of automotive frames?: Steel coils are used in the manufacturing of automotive frames by being shaped, cut, and welded into different sections to create the structural framework of the vehicle. These coils provide the necessary strength and durability required to support the weight of the vehicle and withstand various stresses, ensuring the safety and stability of the automotive frame.

Q: What is the average flatness tolerance for steel coils?: The average flatness tolerance for steel coils varies depending on the specific industry and application. However, in general, most steel coil manufacturers aim for a flatness tolerance of around 0.25% to 0.5% of the material's thickness.

Q: What are the cost considerations when purchasing steel coils?: When buying steel coils, there are several factors to consider regarding cost. To begin with, the price per unit of steel coil is a significant consideration. The cost of steel coils can vary depending on factors such as the type of steel, grade, thickness, width, and length. Higher-grade steel coils tend to be more expensive than lower-grade ones, and thicker or wider coils can also come at a higher cost. Another cost consideration is the quantity of steel coils required. Purchasing larger quantities often comes with volume discounts, so it is important to determine the necessary quantity and assess whether it is more cost-effective to buy in bulk or smaller batches based on demand and storage capacity. Transportation costs should also be taken into account. The weight and size of the coils can impact shipping costs, especially for long-distance transportation. Additionally, the distance between the supplier and the buyer can affect freight charges, so it is crucial to evaluate different shipping options and choose the most cost-effective method. Furthermore, it is essential to consider any additional costs associated with processing or customizing the steel coils. For example, if the coils need to be cut, leveled, or coated, these extra services can add to the overall cost. Obtaining quotes from different suppliers and comparing prices for these value-added services is important. Lastly, the overall quality and reliability of the steel coils must be taken into consideration. Although cheaper options may seem more cost-effective initially, they may end up costing more in the long run if they do not meet required standards or have a shorter lifespan. Choosing reputable suppliers with a history of delivering high-quality products is advisable to ensure that the investment in steel coils is worthwhile. In conclusion, the cost considerations when purchasing steel coils include the price per unit, quantity discounts, transportation costs, additional processing services, and the overall quality and reliability of the coils. Thoroughly evaluating these factors will help make an informed decision that balances cost-effectiveness with the desired quality and specifications of the steel coils.

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