Hot-dip galvanized Colored steel coil for cutting and forming

Hot-dip galvanized Colored steel coil for cutting and forming

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 35000 m.t./month

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Main Features of the Hot-Dip Galvanized Steel Sheet：

• Excellent process capability

• Smooth and flat surface

• Workability, durability

• Excellent anticorrosive property

• High strength

• Good formability

• Good visual effect

Standard and Grade :

Hot-dip galvanized steel coil
	ASTM A653M-06a	EN10327:2004/ 10326:2004	JISG 3302-2010	AS-NZS 4534-2006
Commercial quality	CS	DX51D+Z	SGCC	G1+Z
Structure steel	SS GRADE 230	S220GD+Z	SGC340	G250+Z
	SS GRADE 255	S250GD+Z	SGC400	G330+Z
	SS GRADE 275	S280GD+Z	SGC440	G350+Z
	SS GRADE 340	S320GD+Z	SGC490	G450+Z
	SS GRADE550	S350GD+Z	SGC570	G550+Z
		S550GD+Z		G550+Z

Hot-dip galvanized Colored steel coil for cutting and forming

FAQ:

Q: How do you guarantee the quality of your product?

A: Every process will be checked by responsible QC which insures every product's quality.

Q: How much is your delivery time?

A: Normally within 30 days of receipt of LC original or prepayment, but mostly according to the specific requirements or the quantity

Q: I need sample, could you support?

A: We can supply you with the sample for free, but the delivery charges will be covered by our customers. For avoiding the misunderstanding, it is appreciated if you can provide the International Express Account for Freight Collect. Also you can have a visit to us, welcome to CNBM!

Q: What are the different methods of uncoiling steel coils?: There are several methods used for uncoiling steel coils, including hydraulic uncoiling, motorized uncoiling, and manual uncoiling. Hydraulic uncoiling involves using hydraulic cylinders to unwind and release the tension in the coil. Motorized uncoiling utilizes a motorized mandrel or decoiler to unwind the coil. Manual uncoiling, on the other hand, requires physical effort to unwind the coil by hand. Each method has its own advantages and is chosen based on the specific requirements and capabilities of the uncoiling process.

Q: I just bought some cheap earrings from this beauty supply store but they said surgical steel So will they prevent my ears from bleeding / infection ?: Surgical steel is a grade of steel often used in medical appliances like tweezers, forceps, etc. It's generally non-reactive and considered very safe. It doesn't contain any special properties against infection--you still have to observe basic hygiene and clean your piercings properly--but most people can wear surgical steel earrings without a problem. However, if you have a contact allergy to base metals like nickel, surgical steel may cause redness or irritation because of the metals used in it. If cheap rings or necklaces make your skin break out in a rash you should NOT wear surgical steel.

Q: What are the different types of steel coil surface treatments for corrosion resistance?: To enhance corrosion resistance, different methods are utilized for treating the surface of steel coils. These treatments create a protective layer that prolongs the lifespan of the steel and prevents corrosion. Some commonly used treatments for corrosion resistance include: 1. Galvanizing: Widely recognized as an effective method, galvanizing involves applying a layer of zinc to the steel coil's surface. The zinc acts as a sacrificial anode, corroding before the steel, thus safeguarding it against rust and corrosion. 2. Chromate conversion coating: This treatment entails applying a chromate-based solution to the steel coil's surface. The chromate forms a thin film that serves as a protective barrier against corrosion. Moreover, it improves the adherence of paint or other coatings that may be applied subsequently. 3. Phosphating: Phosphating is a process where a phosphate coating is added to the steel coil. This coating establishes excellent corrosion resistance by chemically bonding with the steel surface. It also enhances the adherence of subsequent coatings or paints. 4. Organic coatings: These coatings comprise paint or epoxy and are applied to the steel coil to create a barrier between the steel and its surroundings. They offer corrosion resistance and enhance aesthetic appeal. The selection of organic coating depends on the specific application and the desired level of corrosion protection. 5. Zinc-rich paint: Similar to galvanizing, zinc-rich paint contains a high concentration of zinc particles. When applied to the steel coil, these particles provide sacrificial protection, preventing corrosion. This coating is commonly employed in harsh environments or for steel coils exposed to frequent moisture or saltwater. It is important to consider various factors such as the application, environment, budget, and required level of corrosion resistance when choosing a surface treatment. Consulting with a steel coil manufacturer or corrosion specialist is advisable to determine the most suitable treatment for a specific situation.

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 loaded onto trucks or containers?: Steel coils are typically loaded onto trucks or containers using specialized equipment such as coil lifters or coil hooks. These devices safely secure the coils and allow them to be lifted and positioned onto the truck or container. The coils are then secured in place using straps or other restraints to prevent them from shifting during transportation.

Q: What are the main challenges in handling and processing steel coils?: The main challenges in handling and processing steel coils include their large size and weight, the risk of damage during transportation and storage, the need for specialized equipment and facilities, ensuring proper handling to prevent injury to workers, and addressing the potential for corrosion and rust. Additionally, the variability in coil dimensions and surface conditions can pose difficulties in achieving precise and consistent processing results.

Q: What materials are used to make steel coils?: Steel coils consist primarily of steel, an alloy primarily composed of iron and carbon. The choice of steel type for coil production depends on the desired properties and applications. Carbon steel is typically the preferred option due to its strength, durability, and versatility. Additional alloying elements, like manganese, silicon, nickel, or chromium, may be incorporated to enhance specific steel characteristics or properties. To produce steel coils, the raw materials are melted, the molten steel is refined, and specialized equipment and processes are employed to shape it into coils.

Q: What types of steel are used in steel coils?: There are various types of steel that are commonly used in steel coils, including carbon steel, stainless steel, and alloy steel.

Q: What are the common coil packaging methods?: Common coil packaging methods include shrink wrapping, strapping, banding, and stretch wrapping. Shrink wrapping involves using a heat shrink film to tightly encase the coil, while strapping and banding utilize metal or plastic bands to secure the coil in place. Stretch wrapping involves wrapping the coil with a stretchable film to provide stability and protection. These methods are commonly used in industries such as steel, wire, and cable manufacturing.

Q: How do steel coils contribute to sound insulation in buildings?: Steel coils contribute to sound insulation in buildings by absorbing and dampening sound vibrations. The dense and heavy nature of steel helps to reduce the transmission of sound waves, preventing them from traveling through walls and floors. Additionally, steel coils can be used as a core material in soundproofing panels, enhancing their effectiveness in reducing noise transmission.

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