Cold Rolled Steel of High Quality of China

Cold Rolled Steel of High Quality of China System 1

Cold Rolled Steel of High Quality of 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

Cold Rolled Steel of High Quality of 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: How are steel coils used in the production of construction machinery?: Steel coils are used in the production of construction machinery as they are a primary raw material for manufacturing various components such as structural frames, chassis, and other heavy-duty parts. These coils are typically processed and fabricated through cutting, bending, welding, and shaping techniques to create the required components that form the foundation of construction machinery.

Q: I need to identify a metal. It is rusty so I suspect it is either iron or steel. Since they both have similar densities and are magnetic, how do I tell the difference betweeen steel and iron?: Iron is a natural ore. Google: Iron ore, click on Mineral Information Institute - Iron Ore. Steel is a man-made material, consisting of iron. Google: Sir Henry Bessemer, inventor.

Q: What are the common methods of protecting steel coils from corrosion?: There are several common methods used to protect steel coils from corrosion. 1. Coating: One of the most effective methods is to apply a protective coating on the surface of the steel coil. Various types of coatings such as paint, epoxy, or zinc can be used to create a barrier between the steel and the corrosive environment. These coatings provide excellent corrosion resistance and prevent moisture and oxygen from reaching the steel surface. 2. Hot-dip galvanizing: This method involves immersing the steel coil in a bath of molten zinc, which creates a thick layer of zinc coating on the surface. The zinc coating acts as a sacrificial barrier, protecting the steel from corrosion. Hot-dip galvanizing is particularly effective in harsh environments or for long-term outdoor exposure. 3. VCI (Volatile Corrosion Inhibitor) packaging: VCI packaging is a method where steel coils are wrapped in a specially designed film or paper that contains volatile corrosion inhibitors. These inhibitors vaporize and form a protective layer on the surface of the steel, preventing corrosion. VCI packaging is commonly used for short-term storage or transportation of steel coils. 4. Desiccants: Moisture is a major contributor to corrosion. Therefore, using desiccants such as silica gel or activated alumina can help absorb moisture and maintain a dry environment around the steel coils. Desiccants are often used in conjunction with other protective methods to enhance corrosion protection. 5. Proper handling and storage: Proper handling and storage practices can significantly reduce the risk of corrosion. Steel coils should be stored in a dry environment away from moisture sources. They should also be handled with clean gloves to prevent the transfer of corrosive contaminants. Regular inspection and maintenance of the storage area are essential to identify and address any potential corrosion risks. By employing one or a combination of these methods, steel coils can be effectively protected from corrosion, ensuring their durability and integrity.

Q: What are the common international standards for steel coils?: The common international standards for steel coils include ASTM A36/A36M, ASTM A572/A572M, ASTM A283/A283M, ASTM A516/A516M, and EN 10025-2. These standards specify the requirements for the chemical composition, mechanical properties, and dimensions of steel coils used in various industries worldwide.

Q: How are steel coils used in the production of steel springs?: Steel coils are used in the production of steel springs as they serve as the raw material for creating the spring's structure. The steel coils are typically shaped and cut into the desired length and diameter to form the spring's body. The coils are then heated and tempered to provide the necessary strength and flexibility required for the spring's function. Overall, steel coils are integral in the manufacturing process of steel springs, providing the base material from which springs are formed.

Q: how many persent of manganese in all types of carbon steel: Not more than 1.65 % of manganese in carbon steel. *Carbon steel, also called plain carbon steel, is steel where the main alloying constituent is carbon. The American Iron and Steel Institute (AISI) defines carbon steel as: Steel is considered to be carbon steel when no minimum content is specified or required for chromium, cobalt, columbium, molybdenum, nickel, titanium, tungsten, vanadium or zirconium, or any other element to be added to obtain a desired alloying effect; when the specified minimum for copper does not exceed 0.40 percent; or when the maximum content specified for any of the following elements does not exceed the percentages noted: manganese 1.65, silicon 0.60, copper 0.60 *AISI 1040 is a carbon steel which is having a 0.60-0.90 % of manganese.

Q: Can steel coils be bent or formed into different shapes?: Yes, steel coils can be bent or formed into different shapes through various processes such as rolling, bending, or stamping.

Q: What are the common coil defects and their causes?: Common coil defects include: 1. Coil breaks: These are caused by improper handling, excessive tension, or defects in the raw material. They result in breaks or fractures in the coil. 2. Edge waves: Edge waves occur due to uneven tension during winding, improper coil alignment, or excessive elongation. This leads to wavy or uneven edges in the coil. 3. Buckling or wrinkling: Buckling or wrinkling can be caused by excessive elongation, improper winding tension, or uneven cooling. It results in irregularities or folds in the coil surface. 4. Slivers: Slivers are thin strips of material that can be present on the surface of the coil. They are typically caused by poor shearing or cutting processes, improper cleaning, or debris in the production line. 5. Oil spots: Oil spots are oily or greasy stains that can appear on the coil surface. They are usually caused by inadequate cleaning or lubrication during the manufacturing process. 6. Coating defects: Coating defects can include uneven or inconsistent coating, bubbles, or peeling. These defects can be caused by issues with the coating application process, improper drying or curing, or contamination in the coating material. It is important to address these coil defects promptly to ensure product quality and prevent further issues during subsequent processing or usage.

Q: i am working a client.my vendor specified in pipe specification pipe line class as MS1 (code for Mild steel)but assigned material to this code is cs smls astm A 106B.my question is any difference between CS and MS material?pls suggest me: CS is a noxious gas that I have tasted. If it is spec mild steel then do so.

Q: I just started playing guitar last year. I never changed the chords. When my sister started taking guitar lessons her teacher said that she needed to change the chords. When i bought the guitar it came with steel strings but i bought nylon strings because they are easier on the fingers. The problem is i already tuned up the guitar but it sounds really bad like if it was not tuned. What can i do about this?: Steel and nylon strings are not interchangeable. Guitars are designed and built for either steel or nylon. Using steel strings on a guitar made for nylon will just destroy the guitar. Nylon strings won't break a steel string guitar, but they probably won't sound that great (different woods sound better with different types of strings)

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