Hot Dipped Galvanized Steel in Coil in Coils
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 5000 m.t./month
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Description：
Galvanized Steel Coil gets coated in layers of zinc because rust won't attack this protective metal. The most external layer is all zinc, but successive layers are a mixture of zinc and iron, with an interior of pure steel. These multiple layers are responsible for the amazing property of the metal to withstand corrosion-inducing circumstances. Zinc also protects the steel by acting as a "sacrificial layer." If rust does take hold on the surface of Galvanized Steel Coil, the zinc will get corroded first. This allows the zinc that is spread over the breach or scratch to prevent rust from reaching the steel. For countless outdoor, marine, or industrial applications, Galvanized Steel Coil is an essential fabrication component.
Superiority：
1. Good Resistance to Corrosion
2. Qualified Processing Machinability
3. High Thermal Resistance
4. Excellent Reflectivity
5. Inexpensive and effective enough
6. Can be recycled and reused multiple times
Application：
With excellent cold bending molded manufacturability, 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 and widely applied in construction, home appliances, decoration
1. Architecture Roofs and outside walls of civilian and industrial buildings, garage doors, fencings and window blinds
2. Appliances Industry Outer clad sheets for washing machine, refrigerator, television, air conditioner and ventilation system, explosion-proof strip, solar water heater and appliance parts
3. Auto Industry Muffler, heat shields of exhaust pipe and catalytic converter, auto parts & accessories under the frame, signboard in highway
4. Industrial Instruments Electric control cabinet, industrial refrigeration equipment, automatic vending machine
Construction field ,ships building industry ,Petroleum and chemical industries ,war and electricity industries ,food processing and medical industry, boiler heat exchanger, machinery and hardware fields
Electrical Appliance：refrigetator.washer,switch cabinet,etc
Furniture：central heating slice, lampshade, etc
Product Specification：
Material:SGCC,DX51D,Q195
Thickness: 0.3-3.0mm
Width: 600-1500mm
Inner Diameter: 508mm, 610mm
Weight of Steel Coil: 3-15MT
Coating Type: Al-Zn Alloy
Available Dipped Layer: 50-150g/m2
Surface Finish Structure: Normal Spangle & Small Spangle & Zero Spangle
Steel grade & Standard: JIS G3302 SGCC
Spangle: Normal spangle, large spangle, small(min) spangle, zero spangle
FAQ:
1.How about the package for the Hot Dip Galvanized Steel in Coil?
Usually Standard export seaworthy package: waterproof paper+steel trip packed+wooden case seaworthy package
Package：Covered with waterproof-paper, strapped by strips. Standard seaworthy export package:4 eye bands and 4 circumferential bands in steel, galvanized metal fluted rings on inner and outer edges, galvanized metal & waterproof paper wall protection disk, galvanized metal & waterproof paper around circumference and bore protection.
2. Can I know the production period of the goods?
Usually it need 20 days for 25tons in one container. We can produce 300 tons per day but we need to arrange the production in advance.
3. How about the label, could you make the label according to pour requirements?
Usually we use the MILL label, but if you need special form we can make.
- Q: How are steel coils inspected for surface quality?
- To ensure that steel coils meet the required standards and are defect-free, a meticulous inspection process is carried out using various methods and technologies. The following steps are involved in inspecting the surface quality of steel coils: 1. Visual Inspection: Trained personnel visually examine the entire surface of the coils to detect any visible defects such as scratches, dents, or irregularities. This step allows for the identification of obvious issues through visual observation. 2. Magnetic Particle Inspection: This non-destructive testing method involves applying a magnetic field to the surface of the steel coil and then adding a magnetic particle solution. Any surface cracks or defects cause the magnetic particles to cluster, making them visible under appropriate lighting. This technique effectively detects surface cracks and abnormalities. 3. Eddy Current Testing: Electromagnetic induction is used in this inspection method to identify surface defects. An eddy current probe is moved over the surface of the steel coil, and any variations in the electrical current induced by the magnetic field are detected. This technique is especially useful for detecting surface cracks, pits, or corrosion. 4. Ultrasonic Testing: Ultrasonic waves are employed to inspect the surface of the steel coil for hidden defects like subsurface cracks or inclusions. High-frequency sound waves are transmitted into the material, and any changes in the reflected sound wave pattern indicate the presence of defects. Ultrasonic testing is highly reliable and can detect even the smallest defects within the steel coil. 5. Surface Roughness Measurement: Specialized equipment is used to measure the surface roughness of the steel coil. This measurement helps determine if the surface meets the required smoothness standards. The equipment scans the surface and provides detailed information about the roughness, allowing the inspector to ensure it falls within an acceptable range. In summary, the inspection of steel coils for surface quality involves a comprehensive process that combines visual examination with advanced testing methods such as magnetic particle inspection, eddy current testing, ultrasonic testing, and surface roughness measurement. These inspection techniques effectively identify and evaluate potential defects or surface irregularities, ensuring that the steel coils meet the necessary surface quality standards.
- Q: How is the thickness of a steel coil measured?
- The thickness of a steel coil is typically measured using a gauge, which is a specialized tool specifically designed for measuring the thickness of materials. The gauge is pressed against the coil, and the reading on the gauge indicates the thickness of the steel.
- Q: Are steel buildings or homes better then wooden buildings? Why?
- Both have advantages and disadvantages. Wood is much cheaper than steel. Wood buildings are easier to construct. Wood more easily lends itself to finishing activities (drywall and such on the interior). Wood buildings can be repaired fairly easily when damaged. Steel is stronger, and can be used for much taller buildings. Steel is more durable, it lasts longer and is more resistant to degradation. Steel is more suitable for extreme situations such as earthquakes. The cost and purpose of the building typically drive the decision regarding what material to use. For homes, its usually not feasible to use steel frames, steel just costs too much. For tall buildings, for industrial buildings, steel is used because the benefits outweight the extra cost.
- Q: Iron melts faster when there will be low carbon in Iron.During steel making the molten Iron gets purified and alloying being done through the process. How the carbon is being controlled at Iron melting stage and what it is called?
- Steel is usually made in a two-step process. As you may know, carbon, in the form of coke, is added to the iron ore during the initial smelting process. This is the first step. The conversion of iron ore into raw iron is accomplished with a blast furnace. Carbon dissolves with the iron during the smelting process. The amount of carbon in the iron is generally not controlled at this point as this would be too difficult, the excess carbon is removed in the next step. The result is pig iron which is crude iron that has a very high carbon content, and a large amount of impurities. Pig iron is almost as brittle as glass, and it is useless in this form. In most modern steelmaking operations, molten pig iron is tapped from the blast furnace three or four times per day- it is not allowed to cool. The liquid pig iron is carried in ladles directly to a Basic Oxygen Furnace which converts the pig iron into steel. The basic oxygen converter uses a stream of pure oxygen to burn off the excess carbon. Impurities are also burned off, particularly phosphorus, silicon, and sulfur (which damage the steel's properties.) These elements all have a much higher affinity for oxygen than iron does, so the iron itself remains unchanged. Once the carbon content and the impurities are reduced to the desired level. The oxygen is shut off, and the iron has now become steel. At this point other alloying elements may be added, such as chromium, manganese, or molybdenum. These elements improve the steel's properties, but also add to it's price. If necessary, more carbon can be added as well if the carbon content has accidentally dropped too low. Finally, molten steel from the basic oxygen furnace is poured off. It can be cast into ingots, billets, or thin slabs.
- Q: How are steel coils used in the production of shipbuilding components?
- Steel coils are used in the production of shipbuilding components as they are the primary raw material for manufacturing various structural and mechanical parts, such as hulls, decks, bulkheads, and frames. These coils are unwound, cut, shaped, and welded to form the required sections and profiles, providing the necessary strength and durability to withstand the harsh marine environment.
- Q: What are the different methods of forming steel coils?
- There are several methods used for forming steel coils, depending on the specific requirements and applications. These methods include hot rolling, cold rolling, and continuous casting. Hot rolling is the most common method used for forming steel coils. It involves heating the steel billet or ingot to high temperatures and then passing it between a series of rollers to reduce its thickness and shape it into a coil. This process is typically performed above the recrystallization temperature of the steel, which allows for better shaping and improved mechanical properties. Cold rolling, on the other hand, is a process that is performed at or near room temperature. It involves passing the steel through a series of rollers to reduce its thickness and shape it into a coil. Cold rolling is often employed to produce steel coils with precise dimensions and excellent surface finish. It can also increase the strength and hardness of the steel. Continuous casting is another method used for forming steel coils. It involves pouring molten steel into a continuous casting machine, where it is solidified into a strand. The strand is then continuously fed into a series of rollers, which shape it into a coil. Continuous casting offers several advantages, such as improved efficiency, reduced energy consumption, and better control over the steel's composition and quality. In addition to these primary methods, there are various secondary processes involved in forming steel coils. These include pickling, annealing, and coating. Pickling removes any rust or scale from the surface of the steel, ensuring a clean and smooth finish. Annealing involves heating the steel to a specific temperature and then slowly cooling it, which helps to improve its ductility and reduce internal stresses. Coating is often applied to steel coils to provide corrosion resistance or enhance its aesthetic appeal. In summary, the different methods of forming steel coils include hot rolling, cold rolling, and continuous casting. Each method offers unique advantages and is chosen based on the specific requirements of the steel product. Additionally, secondary processes such as pickling, annealing, and coating are often employed to further enhance the quality and performance of the steel coils.
- Q: what are the characteristics when of iron or steel when stretched? which one could be stretched further? which one stretches more evenly?thankyou
- Technically, this is known as ductility. a material which can be permanently bent and stretched is said to be ductile. Pure iron, when it lacks carbon and impurities like sulfur and phosphorus, is relatively soft, ductile, and weak. It's about as soft as brass. It can be stretched to about 50% of it's original length before it breaks. The amount a sample can be stretched without breaking is known as elongation. The key to steel is the addition of about 2 parts per thousand of carbon, or around 0.2%. This alters the crystal structure and makes steel much harder, stronger, and tougher, though it also becomes somewhat less ductile. Mild steel, with a low carbon content, has an elongation of around 30% Adding more carbon makes the steel yet stronger, but further reduces the elongation. Adding more than 2-3% carbon produces what is known as Cast Iron. Cast iron is brittle. It has virtually no ductility. It's pretty cheap to produce though.
- Q: How do you prevent damage to steel coils during transportation?
- To prevent damage to steel coils during transportation, several measures can be taken. Firstly, proper packaging and securing techniques should be employed, such as using strong and sturdy crates or pallets to protect the coils from physical impact. Additionally, using protective materials like foam or padding between coils can help cushion them and minimize movement. Secondly, ensuring that the coils are properly loaded and secured in the transport vehicle is crucial. This includes using appropriate restraints, such as straps or chains, to prevent the coils from shifting or falling during transit. Lastly, employing safe driving practices, such as avoiding sudden stops or sharp turns, can also contribute to preventing damage to steel coils during transportation.
- Q: What are the disadvantages of using steel coils?
- One disadvantage of using steel coils is their weight and size, which can make transportation and handling challenging. Additionally, steel coils are susceptible to corrosion, requiring regular maintenance and protective measures to prevent rusting. The production of steel coils also contributes to environmental pollution due to the energy-intensive manufacturing process. Lastly, the upfront cost of steel coils can be relatively high compared to other materials, which may not be suitable for budget-constrained projects.
- Q: steel welding with ms steel iron
- Welding austenitic stainless steels to carbon and low alloy steels are established methods in the process and construction industries. Dissimilar metal welds involving stainless steels can be done using most full fusion weld methods, including TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas). Weld procedures using filler (consumable) enable better control of joint corrosion resistance and mechanical properties. In selecting the weld filler, the joint is considered as being stainless, rather than the carbon steel. Over-alloyed fillers are used to avoid dilution of the alloying elements in the fusion zone of the parent stainless steel.
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Hot Dipped Galvanized Steel in Coil in Coils
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 5000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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