HOT ROLLED STEEL COIL HIGH QUALITY AND COMPETITVE PRICE
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 5000 m.t./month
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HOT-ROLLED STEEL COIL
Hot rolled low hardness, easy processing, good ductility.
Available specification：
thickness | width(mm) | length(mm) | coil inside diameter(mm) | |
HOT ROLLED STEEL COIL | 1.5-25 | 600-2000 | 762 | |
HOT ROLLED STEEL STRIP | 1.5-20 | 30-720 | 762 | |
HOT ROLLED STEEL PLATE | 6-700 | 500-4500 | 4000-18000 | |
HOT ROLLED STEELSHEET | 1.2-25 | 50-2000 | 0-18000 |
We can supply customers' with different specifications of the highest quality and lowest price.
With excellent cold bending molded manufacturablity, good decoration effect, strong anti-corrosion ability, galvanized steel coils and sheets are also pollution-free and easily recycled. Accordingly, they can be used as final products and basic plates of color coated steel coils.
Sincerely welcome to contact us for the future details if any item interest you ,and we will make every effort to assure that your requirements will be satisfied ,and we hope to establish long-term business relations with you on the basis of the equality and mutual benefit.
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- Q: What is the width range of steel coils?
- The width range of steel coils can vary depending on the specific requirements and industry standards, but generally, it can range from a few millimeters to several meters.
- Q: What is the difference between galvanized and galvalume steel coils?
- Galvanized and galvalume steel coils are both types of steel coils that have undergone a coating process to enhance their durability and resistance to corrosion. However, there are distinct differences between the two. Galvanized steel coils are coated with a layer of zinc. This coating provides excellent corrosion resistance and protects the underlying steel from rust and other forms of deterioration. The zinc coating also acts as a barrier against moisture and prevents the steel from coming into direct contact with the elements. Galvanized steel coils are commonly used in applications where corrosion resistance is crucial, such as in construction, automotive manufacturing, and agricultural equipment. On the other hand, galvalume steel coils are coated with a combination of zinc and aluminum. This unique coating composition provides enhanced corrosion resistance compared to galvanized steel coils. The aluminum in the coating acts as a sacrificial anode, offering additional protection to the steel by sacrificially corroding instead. This sacrificial protection mechanism helps the underlying steel to remain intact and prevents the spread of corrosion even if the coating is damaged. Galvalume steel coils are often used in environments where extreme weather conditions and high humidity are prevalent, making them suitable for roofing, siding, and other outdoor applications. In summary, the main difference between galvanized and galvalume steel coils lies in the composition of their coatings. Galvanized steel has a zinc coating, while galvalume steel has a combination of zinc and aluminum. Galvalume steel offers superior corrosion resistance due to the sacrificial protection provided by the aluminum in the coating. The choice between the two depends on the specific application and the level of corrosion resistance required.
- Q: Don't ask me why, but I took my stainless steel ring and I heated it up with my gas stove. I stuck it in there til the metal turned red, and the flame which is normally blue turned orange for some reason when the metal turned red. Anyway, afterwards i cooled it off in water and now it's all discolored and it feels different. It's weighs less and it doesn't feel the same. Plus, it's ugly cause it's all black and blue. What happened? Someone help
- Stainless steel has a rating. I don't know what your ring's stainless steel rating is. If you know, you can look it up. The rating will tell you how much steel vs other metal it has (usually Cr and Ni). But usually when you heat the stainless steel to extreme temperature it will discolor due to oxidation. What is worse is that you cooled it off in water (I assumed that you did it while it was still hot). By rapid cooling, you have changed the physical structure of the steel itself. It will change the hardness of the steel. That is why it feels different. Look up on annealing, normalizing, quenching and tempering under heat treatment for steel.
- Q: How are steel coils protected from chemical damage?
- Steel coils are typically protected from chemical damage through various methods such as applying protective coatings or using barrier films. These protective measures act as a barrier between the steel surface and any potentially corrosive chemicals, preventing direct contact and minimizing the risk of chemical damage.
- Q: How are steel coils labeled for identification?
- Steel coils are typically labeled for identification using tags or stickers that contain important information such as the grade, size, weight, and production details of the coil. Additionally, some coils may also have unique identification numbers or barcodes for easier tracking and inventory management.
- Q: How are steel coils inspected for formability?
- Steel coils are typically inspected for formability through a combination of visual inspection, mechanical testing, and laboratory analysis. Visual inspection involves examining the surface of the coil for any visible defects such as scratches, dents, or deformities that could affect its formability. This is usually done by trained personnel who carefully inspect the entire surface of the coil. Mechanical testing is also commonly employed to assess the formability of steel coils. This can include conducting physical tests such as tensile testing, where a sample is subjected to controlled forces to measure its strength and elongation properties. This helps determine if the steel has the necessary ductility and strength to be formed into the desired shape without cracking or breaking. Additionally, laboratory analysis is often conducted to assess the chemical composition and microstructure of the steel. This involves taking small samples from the steel coil and analyzing them using techniques such as spectroscopy and microscopy. These analyses can provide valuable insights into the steel's composition, grain structure, and other characteristics that can impact its formability. Overall, a combination of visual inspection, mechanical testing, and laboratory analysis is used to ensure that steel coils meet the required formability standards. This comprehensive approach helps identify any potential issues or defects that could affect the performance and reliability of the steel when it is formed into its intended shape.
- Q: What are the common quality issues with steel coils?
- Some common quality issues with steel coils include: 1. Surface defects: Steel coils may have surface defects such as scratches, pits, or rust spots. These defects can affect the appearance and smoothness of the final product and may also impact its performance. 2. Dimensional variations: Steel coils may exhibit dimensional variations, such as thickness variations, width variations, or length variations. These variations can lead to difficulties in processing the steel and may result in inconsistent product dimensions. 3. Mechanical properties: Steel coils may have variations in mechanical properties such as yield strength, tensile strength, or hardness. These variations can affect the strength and durability of the final product and may also impact its suitability for specific applications. 4. Coating issues: Steel coils that are coated or galvanized may experience issues with the coating, such as uneven coverage, peeling, or adhesion problems. These coating issues can result in reduced corrosion resistance and compromised aesthetics. 5. Internal defects: Steel coils may have internal defects such as inclusions, voids, or segregations. These defects can weaken the steel and may lead to failure or breakage during processing or use. 6. Edge issues: Steel coils may have edge defects, such as burrs, cracks, or uneven edges. These edge issues can affect the handling and processing of the steel and may also lead to problems during fabrication or assembly. 7. Coil set or camber: Steel coils may exhibit coil set or camber, which refers to the curvature or bowing of the coil. This can result in difficulties during processing and may lead to distorted or misaligned products. To ensure the quality of steel coils, manufacturers employ various quality control measures such as rigorous inspection, testing, and adherence to industry standards and specifications.
- Q: They both sell the same thingIf prices are to high companies won't by the steelIf prices are to low then the steel company won't earn enoughWhy are some steel companies more successful than others
- Steel is a global commodity. There is some variety in product (flat rolled, tubing, etc), but basically the same product worldwide. Cost to the customer includes shipping of a very heavy product. Inputs are also heavy and costly to ship. Inputs: - Coal - Iron Ore. Some firms have the ability to recycle old steel, a competitive advantage. - Energy (very energy intensive industry) - Labor - Machinery. A new blast furnace is more efficient than 50 years old. So the most profitable steel firms have some of these characteristics: - Proximity to raw materials - Proximity to customers - Access to cheaper means of transportation; rail and sea - Newer machinery - Cheaper labor force - Reasonable cost for electricity and fuel for furnaces
- Q: What are the common methods of slitting or shearing steel coils?
- There are several common methods for cutting or shearing steel coils, including: 1. Rotary Shearing: To cut through the steel coil, a rotary shear machine is used. This machine has a set of rotating blades that move in a circular motion, slicing the coil into individual strips of the desired width. 2. Scissor Shearing: Another method involves using scissor-like blades to make the cuts. These blades are typically operated by hydraulic or mechanical systems, exerting pressure on the coil to cut through it. 3. Slitting: This method is commonly used to cut steel coils into narrower strips. The coil is passed through a set of circular blades, known as slitters, which are set at specific distances apart. The slitters cut through the coil, creating multiple strips of the desired width. 4. Guillotine Shearing: For thicker steel coils, a large guillotine machine is used. This machine has a long blade that moves vertically to shear the coil. Guillotine shearing produces clean and straight cuts. 5. Laser Cutting: Laser cutting is an advanced method that utilizes a high-powered laser beam. This beam is directed by computer-controlled systems, allowing for precise and accurate cutting. Laser cutting is often used for complex shapes or when high precision is required. Each of these methods has its own advantages and is suitable for different applications. The thickness of the steel coil, desired strip width, and required level of precision are factors that determine the most appropriate method to use.
- 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.
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HOT ROLLED STEEL COIL HIGH QUALITY AND COMPETITVE PRICE
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 5000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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