Cold Rolled Steel Sheet in Coil/High Quality/low Price

Cold Rolled Steel Sheet in Coil/High Quality/low Price

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 12 m.t.

Supply Capability:: 50000 m.t./month

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Product Description

Commodity	Cold Rolled Steel Coils
Raw material	SGCC, SPCC, DC51D, SGHC,A653
Certificate	ISO9001.ISO14001.OHSAS18001
Thickness	0.15mm-5mm
Width	1250mm or under
Tolerance	thickness+/-0.01mm
Surface treatment	galvanized / galvalumized steel sheets
Zinc coating	40-180g
Type of coating structure	2/1 or 2/2 coating, or customized
MOQ	25 tons
Packaging	Seaworthy standard packaging or as customed
Delivery	10-15 days after receiving the prepayment
Application	Building industry ,structural use, roofing, commercial use ,household appliance, industry facilities,office buildings

1)Thickness: 0.4-3.0mm

2)Width: 600/1000/1250/1500mm or customized

3)Grade: SPCC, SPCD, SPCE, DX51D+Z, DC01-06, ST12, 170P1, HC380LA, SPHC, Super deep drawing

4)Standard: JIS G3141-1996, EN 10131-2006, DIN EN 1002

5)Weight of Cold Rolled Coil : 3-15MT

6)Surface Treatment: Galvanized or Oil

7)Technique: Cold rolled

8)Edge: Cut edge or Mill

9)Original place: Tianjin, China

10)Advantage of Cold Rolled Coil :

High quality in flatness, brightness and straightness, and be qualified in both chemical compositions and mechanical properties.

11) Package of Cold Rolled Coil : Strapped with min three strapping strips, covered by anti-water paper and plastic film, fixed on the iron or wooden pallets by strapping strips and covered by plastic bag to prevent damage from transportation.

12)Applications for Cold Rolled Coil :(1) For the further producing of hot dip galvanized steel products or Prime Pre-painted Steel Coil
(2) Cold rolled Steel Coil: Auto manufacture, Oil drum, Transformer's tank panel, Furniture, bicycle, construction, battery case, industrial machine, etc.

13)Process of Cold Rolled Coil :

Pickling: To clean the dust and rust points on the surface.
Cold Rolling: Digital rolling control system produces minimum thickness tolerance, helps to prevent twist and improve straightness.
Slitting: Precise slitting machinery helps control the best width tolerance and avoid camber or cracker.

DC01-DC03 Cold Rolled Steel Coil

Q: What are the different methods of punching steel coils?: There are several different methods used for punching steel coils, depending on the specific requirements and desired outcome. Here are a few common methods: 1. Mechanical Punching: This method involves using a mechanical press to apply force and create holes in the steel coil. It utilizes a punch and die set, where the punch is driven into the coil to create the hole. Mechanical punching is ideal for punching small to medium-sized holes and is often used in high-volume production settings. 2. Hydraulic Punching: Hydraulic punching utilizes hydraulic pressure to drive the punch into the steel coil. This method is often used for punching larger holes or shapes that require greater force. Hydraulic punching machines offer precise control and can handle thicker and harder materials. 3. Laser Cutting: Laser cutting is a non-contact method that uses a laser beam to cut through the steel coil. A focused laser beam is directed onto the coil, melting and evaporating the material to create the desired shape or hole. Laser cutting offers high precision and can be used for complex shapes and patterns. 4. Plasma Cutting: Plasma cutting involves using a high-velocity jet of ionized gas (plasma) to melt and remove the steel coil material. This method is suitable for cutting thicker steel coils and is often used for larger holes or irregular shapes. 5. Waterjet Cutting: Waterjet cutting utilizes a high-pressure jet of water mixed with abrasive particles to cut through the steel coil. This method is versatile and can effectively cut through various materials, including steel. Waterjet cutting is known for its high precision and clean cuts. Each method of punching steel coils has its own advantages and considerations. Factors such as material thickness, desired precision, production volume, and cost will determine the most suitable method for a specific application.

Q: What are the challenges in coil slitting for narrow strip widths?: There are several challenges associated with coil slitting for narrow strip widths. One of the main challenges is maintaining accuracy and precision during the slitting process. When dealing with narrow strip widths, even the slightest misalignment or deviation can result in significant defects or inconsistencies in the final product. This requires careful calibration and adjustment of the slitting equipment to ensure that the strips are cut with utmost accuracy. Another challenge is the risk of material damage or deformation during the slitting process. Narrow strip widths are more prone to distortion, wrinkling, or edge cracking, especially if the material is not properly handled or supported during slitting. Special care must be taken to ensure that the material is fed smoothly through the slitting machine and that the tension is properly controlled to minimize any potential damage. Additionally, narrow strip widths can pose challenges in terms of handling and transporting the slit coils. These coils are more susceptible to bending, twisting, or telescoping, which can lead to difficulties in stacking, storage, or transportation. Proper packaging and handling techniques must be employed to ensure that the slit coils maintain their shape and integrity throughout the supply chain. Furthermore, narrow strip widths often require more frequent blade changes during the slitting process. This increases the complexity and time required for setup and maintenance, as the blades need to be carefully selected and replaced to achieve optimal cutting results. It is crucial to have skilled technicians who can handle these blade changes efficiently and effectively. Overall, while coil slitting for narrow strip widths offers various benefits such as cost savings and increased material utilization, it also presents several challenges that need to be carefully addressed. These challenges include maintaining accuracy, preventing material damage, ensuring proper handling and transportation, and managing blade changes effectively. By understanding and addressing these challenges, manufacturers can optimize their coil slitting operations and produce high-quality narrow strip products.

Q: How are steel coils used in the production of electrical relays?: Steel coils are used in the production of electrical relays as the electromagnetic core. When an electric current passes through the coil, it generates a magnetic field that attracts or repels the relay's contacts, allowing the relay to switch on or off and control the flow of electricity in various applications.

Q: What are the challenges in coil slitting?: Coil slitting is a process used to cut large coils of metal into narrower strips of desired widths. While it offers several advantages in terms of efficiency and flexibility, there are also several challenges associated with coil slitting. One of the main challenges in coil slitting is ensuring consistent strip width accuracy. Since coil slitting involves cutting the metal coil into smaller strips, it is crucial to maintain consistent width measurements throughout the process. Any deviation in the strip width can lead to issues downstream in the production line, affecting the quality and functionality of the final product. This challenge requires the use of precise slitting equipment and careful monitoring of the process parameters. Another challenge in coil slitting is managing edge quality. The edge quality of the slit strips is critical, especially in applications where the edges need to be free from burrs or other imperfections. Achieving clean and smooth edges requires proper blade selection, positioning, and maintenance. Any defects or irregularities on the strip edges can impact subsequent processes like bending, welding, or coating. Additionally, coil slitting poses challenges related to the material itself. Certain types of metals, such as high-strength steels or alloys, can be more difficult to slit due to their hardness or brittleness. Slitting these materials may result in blade wear and premature failure, leading to increased downtime and maintenance costs. Furthermore, the presence of contaminants or surface defects on the coil can also affect the slitting process, requiring additional cleaning or preparation steps. Another significant challenge in coil slitting is handling and processing large coils. Coils can be heavy and unwieldy, making it crucial to have proper equipment and procedures in place to handle them safely. Additionally, the slitting process can generate significant amounts of scrap material, which needs to be efficiently managed and disposed of. Proper storage, transportation, and recycling of the scrap are essential to minimize waste and maintain a clean and organized working environment. In conclusion, coil slitting offers numerous benefits in terms of customization and productivity. However, it also presents challenges in maintaining strip width accuracy, managing edge quality, dealing with difficult materials, and handling large coils and scrap. Overcoming these challenges requires expertise, precision equipment, and careful process control to ensure the desired quality and efficiency in coil slitting operations.

Q: How are steel coils used in the production of construction materials?: Steel coils are used in the production of construction materials as they serve as the raw material for various applications. These coils are processed and shaped into different forms, such as beams, bars, or sheets, which are then used to create structural components like columns, beams, and walls. Additionally, steel coils are also employed in the manufacturing of roofing materials, pipes, and other essential construction elements. Overall, steel coils are crucial in providing strength, durability, and structural integrity to construction materials.

Q: How does adding carbon to Iron make it stronger? How does steel look the molecular structure in comparison to Iron? looking for a very scientific answer =]: Cast Iron' is typically brittle, while 'Maleable Iron' has a small percentage of carbon which allows it to be hammered and formed. Steel is an alloy that consists mostly of iron and has a carbon content between 0.2% and 2.1% by weight, depending on the grade. Carbon is the most common alloying material for iron. Steel is a crystalline structure of iron molecules interspersed with carbon molecules. This is properly known as cementite. The hardness and malleability of steel depends not only on the carbon content, but on how the carbon and iron molecules are arranged to one another. Internal stresses in the steel's crystalline structure will increase or decrease depending on the temperature it is subjected to and the rate at which molten steel is cooled. This 'tempering' can increase the strength of the steel at the expense of brittleness.

Q: How are steel coils used in the manufacturing of storage cabinets?: Steel coils are used in the manufacturing of storage cabinets as they provide the raw material for forming the cabinet's metal components. Coils are unrolled, cut, and shaped into the necessary panels, shelves, and doors, which are then assembled to create the cabinets. The strength and durability of steel make it an ideal material for these cabinets, ensuring they can safely store and organize various items.

Q: What are the different methods of steel coil surface cleaning?: There are several methods of steel coil surface cleaning, including mechanical cleaning, chemical cleaning, and high-pressure water cleaning. Mechanical cleaning involves using abrasive materials or brushes to physically remove dirt, rust, and other contaminants from the surface. Chemical cleaning uses various chemicals or solvents to dissolve or loosen the contaminants, making them easier to remove. High-pressure water cleaning involves spraying water at a high pressure to dislodge and wash away the dirt and debris. These methods can be used individually or in combination, depending on the level of cleanliness required and the specific condition of the steel coil.

Q: Im looking at some knives and am wandering if they use good steel one is this case knife and its 54 dollars Do they use good steel or not Iv never had a good experience with Case but am wandering if they use good steel now? if you all have any other recommendations let me hear them I got my Selection from here so any others wont hurt. so basic break down does case use good steel know?: Old Case Knives

Q: With the Reduced weight of steel,wouldn't the projectile be at a much higher velocity when fired causing more damage?I mean l couldn't steel be worked to seal the bore,not damage the rifling and still cheap enough to mass produce,and be light enough to carry much more ammo.: The bullet needs to be a bit malleable to conform to the grooves in the barrel. In an American .30 gun a .308 bullet is forced out of the gun it has to conform to the .30 bore and .308 grooves to form a tight seal. That's why lead and copper are the primary materials of the bullet. A steel bullet in a steel bore would potentially produce a pipe bomb or at least do significant damage to the bore. Also, the weight of bullets are optimized for their application with the current materials. There is no need or desire to reduce the mass of the bullet. Simply reducing mass for increased velocity can effect the terminal ballistics in all kinds of ways, but you cannot assume that damage will be higher for a variety of reasons. If nothing else the fact that the military has INCREASED the 5.56x45mm from 55gr to 62gr should be enough to doubt your claim. Also steel is about 70% the density of lead, so there would not be a major savings in mass, but aluminum is only 25% the density and it is much closer to the hardness of lead. If you really wanted a light bullet, the aluminum may be the way to go.

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