Hot Rolled Steel Coils, A36,SS400,Q235B,SPHC from China
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 100000 m.t./month
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Quality Product, Order Online Tracking, Timely Delivery
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Hot Rolled Steel Coils/Sheets
Application:Floor board, factory stair boards, deck board, car boards ,staircases, lorry beds, elevator floors, general fabrication.
Material:Q195 Q225 Q235 Q345 A36 S235jr St37-2 SS400 and so on
Uses: fridge ,air conditioner, washing machine and household appliances, automobile,steel furniture, drum, motorcycles, fitting apparatuses, furniturem,builings electronic telecoms and gas- conveyance projects.
Product: | Hot Rolled Steel Coils/Sheets |
Material: | Q195,Q235,A36,SS400,S235JR,Q345,ST37-2, CCSB etc |
Standard : | JIS G3002 GB/T251B |
Technique: | hot rolled |
Thickness | 1.2mm to 200mm |
Tolerance of thickness: | :+/-0.03mm |
Width: | 750mm-2000mm |
Tolerance of width: | :+/-5.00mm (aiming to +/-2.00mm) |
Normal width: | 914mm, 1000mm, 1200mm, 1219mm, 1250mm,1500mm |
Length: | According to requirement |
Coil ID: | 508mm-610mm |
Coil Weight: | 10-25 Metric Tons |
Surface: | Black, Chromate, fingerprint resistant treatment, slight oiled or non-oiled, dry |
Port of Loading: | Tianjin/Shanghai port |
Packaging Details: | Standard export packing or according to the clients required |
- Q: What are the typical tolerances for steel coils?
- The typical tolerances for steel coils vary depending on the specific requirements and standards set by the industry. However, common tolerances for steel coils include thickness tolerances of +/- 0.001 to 0.005 inches, width tolerances of +/- 0.005 to 0.050 inches, and length tolerances of +/- 0.250 to 0.500 inches. These tolerances ensure that the steel coils meet the desired specifications and can be used effectively in various applications.
- Q: How are steel coils used in the production of construction machinery?
- Steel coils are used in the production of construction machinery as they provide the raw material needed for manufacturing various components, such as frames, beams, and structural elements. These coils are processed and shaped into the desired forms, ensuring the machinery's durability, strength, and stability.
- Q: How are steel coils heat treated?
- Steel coils are heat treated using a process called annealing. Annealing is a heat treatment technique in which the steel coils are heated to a specific temperature and then slowly cooled down. This process helps to relieve any internal stresses within the steel, improve its mechanical properties, and enhance its overall performance. The heating process involves raising the temperature of the steel coils to a critical point, typically between 800°C and 900°C, depending on the specific grade and desired outcome. The coils are then held at this temperature for a specific period of time, allowing for the transformation of the steel's microstructure. Once the desired time has elapsed, the heated steel coils are slowly cooled down in a controlled manner. This slow cooling process is vital as it allows the steel to undergo a gradual transformation, resulting in a more uniform and refined microstructure. This controlled cooling also helps to minimize the formation of internal stresses, which can potentially weaken the steel. The annealing process can be performed in different atmospheres, such as air, nitrogen, or hydrogen. The choice of atmosphere depends on the specific requirements and properties desired for the steel coils. For instance, annealing in a protective atmosphere like nitrogen or hydrogen can help prevent oxidation or decarburization of the steel surface. Overall, heat treating steel coils through annealing is a critical step in enhancing their mechanical properties, improving their formability, and achieving the desired characteristics for various industrial applications.
- Q: How are steel coils used in the production of electrical conduits?
- Steel coils are used in the production of electrical conduits in several ways. Firstly, steel coils are used as the raw material for manufacturing electrical conduits. These coils are made of high-quality steel that is specially processed and formed into a long, continuous strip. Once the steel coils are obtained, they are fed into a machine called a slitter. The slitter cuts the coils into narrower strips of the desired width. These narrower strips will serve as the base material for the electrical conduits. The next step is to shape the steel strips into the desired conduit shape. This is done by passing the strips through a series of rollers and other shaping tools. The steel strips are gradually formed into the round or rectangular shape of the conduit. The rollers apply pressure and manipulate the steel strip until it reaches the desired shape. After the shaping process, the ends of the steel strips are welded together to create a continuous conduit. This welding process ensures that the conduit will have a seamless structure, which is important for its functionality and durability. Once the conduits are formed and welded, they undergo further processing to enhance their properties. This may include processes such as galvanizing, where the conduits are coated with a layer of zinc to protect them from corrosion. This additional layer provides the conduits with increased longevity, making them suitable for various electrical applications. In summary, steel coils are essential in the production of electrical conduits. The coils serve as the raw material that is shaped, welded, and processed to create the final product. The use of steel coils ensures that the electrical conduits are strong, durable, and capable of withstanding the demands of electrical installations.
- Q: i know stainless steel swords are decoration, what metal is ok for a sword that is usable
- carbon steel will hold a good edge, but will corrode easily. The nicest blades I have seen are made from damascus steel (repeatedly folded over and over). It makes a blade which is good and flexible sideways, but more rigid in the cutting direction, and it holds an edge extremely well. It also looks awesome due to the grain effect from the folds, but is very expensive.
- Q: How are steel coils inspected for thickness variations?
- Steel coils are inspected for thickness variations using non-contact measurement techniques such as laser or ultrasonic sensors. These sensors are capable of accurately detecting and measuring the thickness of the steel coils at various points along their length. The collected data is then analyzed to identify any variations in thickness and ensure the quality and consistency of the steel coils.
- Q: What are the different methods of coil recoiling for steel coils?
- Steel coils can undergo coil recoiling using various methods, each with its own advantages and applications. Some commonly used methods include: 1. Slitting and rewinding: This method entails cutting the wide steel coil into narrower strips, which are then rewound into smaller coils. Circular blade slitting machines are typically employed for steel cutting, while the rewinding process ensures tight and uniform winding of the narrower strips. Industries like automotive, construction, and packaging widely employ this method. 2. Rewinding with tension control: This method involves unwinding and rewinding the steel coil using tension control systems. These systems maintain consistent tension throughout the recoiling process, resulting in uniform winding quality. This method proves beneficial when handling delicate or sensitive materials that require gentle treatment. 3. Recoiling with edge trimming: In situations where steel coil edges are damaged, uneven, or flawed, edge trimming can be combined with the recoiling process. Edge trimming machines remove defective sections, ensuring coils with smooth and even edges. 4. Recoiling with surface treatment: Steel coils often undergo surface treatment processes like oiling, coating, or galvanizing to enhance corrosion resistance or improve surface properties. Recoiling can be performed alongside these treatments, guaranteeing proper application and uniform coverage across the entire coil surface. 5. Recoiling with tension leveling: Tension leveling is a process that eliminates coil shape defects, such as coil set or crossbow, by applying tension during recoiling. This method ensures a flat and even coil shape, which is advantageous for subsequent processing and manufacturing operations. 6. Recoiling with precision slitting: Precision slitting is a specialized method used to achieve extremely narrow strip widths or tight tolerances in the steel coil. It involves precise control of slitting knives and winding tension to ensure accurate and consistent strip dimensions. Industries requiring high precision, such as electronics or precision engineering, commonly employ this method. In summary, the choice of coil recoiling method depends on factors such as desired coil dimensions, material characteristics, surface requirements, and the specific industry or application. Manufacturers often combine multiple methods to meet the diverse needs of their customers.
- Q: How are steel coils used in the manufacturing of machinery?
- Steel coils are used in the manufacturing of machinery as they serve as a primary material for various components such as gears, shafts, frames, and structural supports. These coils are typically cut, shaped, and welded to form intricate and durable parts that can withstand the demands of heavy-duty machinery. Additionally, the strength, versatility, and corrosion resistance of steel make it an ideal choice for machinery manufacturing, ensuring longevity and reliability in the final product.
- Q: What are the different types of steel coil storage containers?
- There are several types of steel coil storage containers, including coil racks, coil cradles, coil saddles, and coil cars.
- Q: What are the common maintenance practices for steel coils?
- Common maintenance practices for steel coils include regularly inspecting for any signs of corrosion, cleaning the coils to remove dirt and debris, applying protective coatings or paint to prevent rust, storing the coils in a dry and well-ventilated area, and ensuring proper handling and transportation to avoid any damage. Additionally, it is important to monitor and control the humidity levels around the coils to prevent moisture buildup, which can lead to corrosion.
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Hot Rolled Steel Coils, A36,SS400,Q235B,SPHC from China
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 100000 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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