High Quality Surface Finish Cold Rolled Steel Coil

High Quality Surface Finish Cold Rolled Steel Coil

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 m.t./month

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Basic Info.

Model NO.:SPCC

Surface Treatment:Oiled

Technique:Cold Rolled

Standard:ASTM, JIS, GB, DIN, BS

Steel Grade:SPCC

Product Description:Cold Rolled Steel

Brand Name:Cheeho & OEM

Heat Treatment:Annealed

Temper Type:Ba

Margin Status:Ec & Em

Surface Condition:Sb & SD

Surface Quality:FC & Fd

Inner Diameter:508-610mm

Approved Certificate:SGS & ISO & BV & TUV

Export Markets:Global

Additional Info.

Trademark:CheeHo & OEM

Packing:Standard Seaworthy Package

Standard:SGS & ISO & BV & TUV Approved

Origin:Jiangyin, Jiangsu, China

HS Code:72091790

Production Capacity:250000mt/Year

Product Description

Brief Introduction
Cold Rolled Steel is steel that has been worked below its recrystallization temperature by passing it between a pair of rollers. Recrystallization temperature is the temperature at which grains in the lattice structure of the metal have been rearranged, leaving it free of strain and deformations. Cold Rolled Steel is pre-treated before being cold rolled with a process known as pickling, which uses strong acids to remove scale and other impurities. The Cold Rolled Steel is then passed through rollers to reduce its thickness. Most cold rolling takes place in multiple passes and as the size of the Cold Rolled Steel is further reduced, its strength and hardness both increase, but its ductility decreases. After cold rolling, heating the metal up in a process known as annealing can restore some of its ductility. The final Cold Rolled Steel coil may be manufactured in the form of sheets, strips, bars, or other forms.

Specification
1. Thickness: 0.4-2.0mm
2. Width: 900-1250mm
3. Inner Diameter: 508mm
4. Weight of Steel Coil: 3-15MT
5. Heat Treatment: Annealed
6. Margin Status: EC & EM
7. Surface Quality: FB&FC
8. Surface Status: SB & SD
9. Surface Treatment: Oiling

Mechanical Properties
1. Yield Strength: ≤320MPa
2. Tensile Strength: ≤370MPa
3. Elongation (L=50mm, b=25mm) When:
(1) Nominal Thickness <0.25mm: 30%
(2) Nominal Thickness 0.25mm-<0.40: 32%
(3) Nominal Thickness 0.40-<0.60mm: 34%
(4) Nominal Thickness 0.60-<1.0mm: 36%
(5) Nominal Thickness 1.0-<1.6mm: 37%
(6) Nominal Thickness >1.6mm: 38%

Application
1. Base metal for coated and dipped products.
2. Home appliance
3. Precise welding tube
4. Flux cored welding wire
5. Bicycle, battery shell,
6. Automobile fitting, hardware
7. Enameling industry etc.

Superiority
1. High precision of dimensional tolerance
2. Excellent mechanical property such as the yield strength and tensile strength, etc.
3. Being highly resistant to denting
4. Exhibits useful magnetic properties
5. High quality surface finish and get well prepared for the surface coating
6. Available in a variety of sizes and shapes with characteristics useful in a wide range of applications

Chemical Components

Grade	Chemical Components
Grade	C	Mn	P	S	Alt
SPCC	≤0.12	≤0.50	≤0.035	≤0.025	≥0.020
SPCD	≤0.10	≤0.45	≤0.030	≤0.025	≥0.020
SPCE	≤0.08	≤0.40	≤0.025	≤0.020	≥0.020

Q:What is the maximum tension that steel coils can withstand during uncoiling?: The maximum tension that steel coils can withstand during uncoiling can vary depending on various factors such as the type and grade of steel, the dimensions of the coil, and the uncoiling process. However, steel coils are typically designed to withstand high tension forces, with maximum tensile strengths ranging from 300 to 2,000 megapascals (MPa). It is recommended to consult the manufacturer's specifications or engineering guidelines for precise information regarding the maximum tension limits for a specific steel coil.

Q:Are they made using the same processes, or is tempered steel made without the quenching process?: No. Not quite. The term 'Hardened steel' is often used to refer to 'Heat treated steel'. There are two separate steps in heat treatment. First the red hot steel is 'quenched' (rapidly cooled). This yields maximum hardness ,but the steel may be too brittle for the intended purpose. The next stage, 'tempering' is heating to a limited temperature, and slow cooling. This reduces the hardness somewhat, depending on the re-heat temperature, but restores some of the toughness lost in the first stage.

Q:I'm a hiker and cook on a camp fire with a canteen cup. So which would be a better material for cooking on a campfire with, aluminum or stainless steel?: Stainless steel and as to the soot problem, it isn't. Black absorbs heat faster, so if you let the pan get blackened it will heat up better for you. Most people used cast iron for campfire cooking and it was black and worked well. Trouble with cast iron is it weighs and ton and not good for hiking with.

Q:Can steel coils be welded?: Yes, steel coils can be welded. Welding is a widely used process for joining metal components, including steel coils.

Q:Can steel coils be customized in terms of size and specifications?: Certainly! Steel coils can indeed be personalized in terms of size and specifications. Although steel coils are normally produced in standard sizes and specifications, they can be customized to fulfill particular requirements based on the customer's preferences. Customization may involve altering the dimensions of the coils in terms of width, length, and thickness, as well as modifying specifications such as the type of steel, surface finish, and coating. Through this process, steel coils can be tailored to suit various applications and industries, ensuring that they meet the specific requirements and performance standards of customers. Industries such as automotive, construction, manufacturing, and appliances often utilize customized steel coils, as precise sizes and specifications are essential for efficient and effective operations.

Q:How are steel coils used in the manufacturing of agricultural irrigation systems?: Steel coils are used in the manufacturing of agricultural irrigation systems as they are shaped and formed into various components such as pipes, tubes, and fittings. These coils provide strength, durability, and corrosion resistance, ensuring the longevity and reliability of the irrigation system.

Q:What are the characteristics of hot-rolled steel coils and cold rolled steel coils? What loading and unloading tools should be used? What items should be paid attention to?: When placing materials to roll on both sides of the main pad wood pallets, prevent rolling back and forth. In addition the floor should be thickened, cannot have uneven or debris, because the line of steel coils when gravity concentrated in contact with the ground floor, there is a fracture easily, debris, easy to leave the indentation in the steel roll.

Q:What is the strongest steel ever made.: Wootz is laughable. A modern car spring has more tensile strength, not to mention better purity in manufacturing. Alpha B is right. My answer would be NS110. While wootz was the source of the original damascus steel. The manufacturing process was much like many crucible type steels of the past. And they were not used by japanese smiths. A traditional japanese sword was made from the ground up. Smelting the iron laden sand into Tamahagane. Which is a pumice like crude steel. It would be forged, and diamond powder would be applied and hammered into the skin. It would then be folded repeatedly to homogenize the blade. For what you are asking for now. I would say that 1/2 mild steel plate should work nicely.

Q:What are the different types of coil slitting machines?: In the market, one can find various coil slitting machines, each designed to meet specific requirements and preferences. Some commonly used types are as follows: 1. Rotary shear slitters: These machines employ rotary knives mounted on a rotating drum to slice the coil into narrow strips. They are perfect for high-speed operations and can handle large quantities of material. 2. Loop slitters: Loop slitting machines pass the coil through a loop to maintain tension and prevent material damage during the slitting process. They are suitable for delicate materials or those prone to deformation. 3. Turret slitters: Turret slitting machines have multiple sets of slitting knives mounted on a rotating turret. This enables quick and easy switching between various slitting configurations, reducing downtime and increasing productivity. 4. Drag slitters: Drag slitting machines utilize a stationary knife and a moving clamp to hold and pull the coil through the cutting process. They are versatile and can handle a wide range of materials, including thick or heavy coils. 5. Crush slitters: Crush slitting machines employ a set of opposing rollers to crush and cut the coil material. They are commonly used for softer materials or those that are challenging to cut with traditional knives. 6. Laser slitters: Laser slitting machines make use of a high-powered laser beam to precisely cut through the coil material. They offer unparalleled accuracy and are suitable for high-end applications or materials with complex shapes. Each type of coil slitting machine has its own advantages and limitations. The choice of machine depends on factors such as the type of material, required speed, desired accuracy, and production volume.

Q:How are steel coils processed for different finishes?: Steel coils can be processed for different finishes through various methods. One common process is called coil coating, where the steel coil is cleaned, primed, coated, and cured to achieve a desired finish. This process includes removing any contaminants from the surface of the coil, applying a primer to enhance adhesion, and then coating it with a specific paint or coating material. The coated coil is then cured at high temperatures to ensure proper adhesion and durability. Another method for processing steel coils is through galvanization. In this process, the steel coil is coated with a layer of zinc to protect it from corrosion. This can be done through hot-dip galvanization, where the coil is immersed in a bath of molten zinc, or through electro-galvanization, where a thin layer of zinc is electroplated onto the coil. The galvanized finish provides excellent corrosion resistance and can be further processed to achieve different aesthetic finishes. Additionally, steel coils can be processed for different finishes through various surface treatments. This may involve processes such as pickling, where the coil is treated with an acid solution to remove scale and impurities, or mechanical treatments like brushing or grinding to achieve a desired texture. These surface treatments can be followed by applying a protective coating or paint to enhance the appearance and durability of the coil. Overall, the process of achieving different finishes on steel coils involves a combination of cleaning, coating, curing, and surface treatments. The choice of specific methods depends on the desired finish and the intended application of the steel coil.

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