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 wanna strip down my bike and take off all the paint... im thinking of leaving it just the steal color... Do i need to put anythinng on the steel to coat it or can i just leave it like that... Will it rust or anything?: If it's stainless steel or aluminum, it won't rust. Chances are the bike parts that have been painted are of metals that will rust. If you like the metal color, then you can get paints that look like metal or you can clear coat it. You might want to consider just a grey primer.

Q:My 8-year-old and 9-year-old boys have approached me with an interesting question. Does fire burn steel? One says yes, the other says no. Help me to settle yet another debate :): It can burn it... but not the sort of fire you would find at home... Ive actually done it before in a silversmithing class with a very hot blow torch. It takes a long time, the metal first goes pink, then glowing orange red... it stays that way for a while, and then 'cracks' kind of loudly and basically disintergrates very suddenly. A torch this hot has a very hard (noisy) flame which is very transparent. But you cant burn it in the fireplace.

Q:What are the different coil edge options?: There are several different coil edge options available, including open coil, continuous coil, offset coil, and pocket coil. Each type of coil edge offers unique features and benefits. Open coil edges are interconnected and provide a durable and supportive foundation. Continuous coil edges are made from a single piece of wire and offer enhanced stability and motion isolation. Offset coil edges have an hourglass shape for improved contouring and pressure relief. Pocket coil edges consist of individual fabric-encased coils that move independently, offering personalized support and minimizing motion transfer. Ultimately, the choice of coil edge depends on personal preferences and desired sleeping experience.

Q:Please explain why steel is denser than wood.: The atoms in steel are more tightly packed. They have a greater mass in a smaller volume than wood. Basically, if you take 100 g of steel and 100 g of wood, the piece of steel will be smaller (less volume) than wood and therefore more dense. Density = Mass/Volume

Q:How are steel coils loaded and unloaded from ships?: Steel coils are typically loaded and unloaded from ships using heavy-duty cranes and specialized equipment. When loading, the coils are lifted from the dockside or storage area using a crane with strong lifting capacity. They are carefully positioned onto the ship's deck, ensuring proper balance and securement to prevent any damage during transit. Unloading is done in a similar manner, with the crane carefully lifting the coils from the ship's deck and placing them onto the dock or designated storage area. Throughout the process, safety protocols are followed to ensure the smooth and efficient handling of these heavy and valuable cargo.

Q:What are the common industry standards for steel coils?: Steel coils in the industry have varying standards depending on the region and specific use. However, there are widely accepted standards used in the steel industry. Among the most frequently used standards for steel coils is the American Society for Testing and Materials (ASTM) standard. ASTM has created various specifications for different types of steel coils, including hot-rolled, cold-rolled, and galvanized coils. These specifications outline the mechanical and chemical properties that the steel must meet, as well as dimensions, tolerances, and testing requirements. Apart from ASTM, international organizations like the International Organization for Standardization (ISO) and the European Committee for Standardization (EN) have also established standards for steel coils. ISO standards, such as ISO 3574 and ISO 5952, offer guidelines for general requirements, dimensional tolerances, and mechanical properties of steel coils. Similarly, EN standards like EN 10130 and EN 10131 specify the characteristics and tolerances for cold-rolled steel coils. Moreover, industry-specific organizations and associations may have their own standards for steel coils. For instance, the American Iron and Steel Institute (AISI) has developed specific standards for various steel products, including coils. These standards cover aspects including chemical composition, mechanical properties, and surface finish. It's worth noting that steel coil standards can also be determined by the intended use. Industries like automotive, construction, and manufacturing may have specific requirements that surpass general standards. In such cases, customers and manufacturers may refer to industry-specific standards or collaborate to define custom specifications. In summary, while there are several common industry standards for steel coils, it is crucial to consult the specific standards and requirements applicable to the region and application in question to ensure compliance and quality.

Q:420 440 1045 or 1065 ive bought knifes with these steel grades and i want to know which one is better.: SAE 440 is the best. Classified as high grade cutlery steel. There are various grades of 440: A, B, C, and F. 440 A is the most stain resistant while 440 C has the most carbon and can achieve the highest hardness (Best edge Retention). SAE 440 Chemistry: 16 - 18% Chromium, 0.60 - 1.2% Carbon, 0.75% Molybdenum. SAE 420 is pretty good. Classified as cutlery steel, it is a stain resistant grade but has less chromium and significantly less carbon than SAE 440. SAE 420 Chemistry: 12 - 14% Chromium, 0.15% Carbon (min), 0 Molybdenum Chromium is what makes the steel corrosion resistant. It also adds toughness. Molybdenum adds extra corrosion resistance and adds hardenability. So you can see by chemical components that 440 is highest quality although that also means more cost. 1045 and 1065 are low quality steels and you should probably never use them for a knife. The 1 indicates plain carbon steel with little other alloying elements. The last two digits indicate how much carbon is in the steel. 1045 has 0.45% carbon, mid-range hardenability. 1065 has 0.65% carbon, high hardenability. So if I had to choose I would choose 1065 over 1045 but the difference isn't that noticeable. Everything I said here assumes they have all had the optimum Quench and Temper heat-treatment for their chemistry grade.

Q:What are the dimensions of steel coils used in the railway equipment industry?: The dimensions of steel coils used in the railway equipment industry can vary depending on the specific application and requirements. However, common dimensions for railway steel coils typically range in thickness from 1.5mm to 25mm and in width from 600mm to 2000mm. The inner diameter of the coil is typically around 508mm, while the outer diameter can range from approximately 900mm to 2000mm.

Q:What are the safety regulations for handling steel coils?: The safety regulations for handling steel coils include wearing appropriate personal protective equipment, such as gloves and steel-toed boots, using proper lifting techniques and equipment, ensuring a clear and organized work area, and following guidelines for stacking and securing coils to prevent accidents and injuries. Regular inspections and maintenance of equipment and storage areas are also crucial for ensuring safe handling of steel coils.

Q:What are the different types of steel coil edge condition options?: There is a variety of steel coil edge condition options available, each offering distinct characteristics and advantages. The most common types are as follows: 1. Mill Edge: This is the basic and widely used type of steel coil edge condition. It occurs naturally during the hot rolling process and is characterized by a rough and uneven edge. Mill edge coils are typically suitable for applications where edge quality is not crucial, such as general fabrication. 2. Slit Edge: Slit edge coils are produced by cutting the edges of the steel coil using a slitting machine. This process results in a smoother and more uniform edge compared to mill edge coils. Slit edge coils are often preferred for applications that require a higher level of precision, such as in the automotive or electrical industries. 3. Trim Edge: Trim edge coils are similar to slit edge coils but undergo an additional trimming process to eliminate any defects or imperfections from the edges. This creates an even smoother and cleaner edge, making trim edge coils ideal for applications where appearance and aesthetic quality are important, such as in architectural or decorative purposes. 4. Deburred Edge: Deburred edge coils undergo a deburring process to remove any sharp or burr-like edges. This is done to ensure safety and prevent injuries during the handling or processing of the coils. Deburred edge coils are commonly used in industries where worker safety is a priority, such as in construction or manufacturing. 5. Rounded Edge: Rounded edge coils have their edges rounded off to eliminate any sharp corners or edges. This type of edge condition is often utilized in applications where the coils will come into contact with delicate materials or surfaces, as it helps prevent scratching or damage. It is important to consider the specific requirements of the application and the desired outcome when choosing a steel coil edge condition. Each type offers its own unique benefits, and factors such as precision, appearance, safety, and functionality should be taken into account when selecting the appropriate option.

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