Hot-Dip Galvanized/Aluzinc Steel Coil in Competitive Price and High Quality

Hot-Dip Galvanized/Aluzinc Steel Coil in Competitive Price and High Quality System 1

Hot-Dip Galvanized/Aluzinc Steel Coil in Competitive Price and High Quality

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 100 m.t.

Supply Capability:: 10000 m.t./month

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Hot-dip Zinc Coating Steel Building Roof Walls
1.Structure of Hot-Dip Galvanized Steel Sheet Description：

Hot-dip galvanized steel coils are available with a pure zinc coating through the hot-dip galvanizing process. It offers the economy, strength and formability of steel combined with the corrosion resistance of zinc. The hot-dip process is the process by which steel gets coated in layers of zinc to protect against rust. It is especially useful for countless outdoor and industrial applications. Production of cold formed corrugated sheets and profiles for roofing, cladding, decking, tiles, sandwich walls, rainwater protective systems, air conditioning duct as well as electrical appliances and engineering.

2.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

3.Hot-Dip Galvanized Steel Sheet Images

Hot-Dip Galvanized/Aluzinc Steel Coil in Competitive Price and High Quality

4.Hot-Dip Galvanized Steel Sheet Specification

Standard: ASTM, JIS,EN

Grade: CS, DX51D+Z,SGCC, SS 230~550,S220GD+Z~S550GD+Z, SGC340~SGC570

Thickness: 0.1mm~5mm

Width: max 2000mm

Coil weight:3-12 MT

Coil ID:508/610mm

Surface structure: zero spangle, regular spangle or minimum spangle

Surface treatment: Chromate treatment, Oiled/dry, skinpassed/non-skinpassed

Packing: Standard seaworthy export package

Technology test results:

Processability	Yield strength	Elongation %	Elongation %	180°cold-bending
Common PV	-	270-500	-	d=0,intact,no zinc removal
Mechanical interlocking JY	-	270-500	-	d=0,intact,no zinc removal
Structure JG	>=240	>=370	>=18	d=0,intact,no zinc removal
Deep drawn SC	-	270-380	>=30	d=0,intact,no zinc removal
EDDQ SC	-	270-380	>=30	d=0,intact,no zinc removal

5.FAQ of Hot-Dip Galvanized Steel Sheet

We have organized several common questions for our clients，may help you sincerely：

1.How about your company？

A world class manufacturer & supplier of castings forging in carbon steel and alloy steel，is one of the large-scale professional investment casting production bases in China,consisting of both casting foundry forging and machining factory. Annually more than 8000 tons Precision casting and forging parts are exported to markets in Europe,America and Japan. OEM casting and forging service available according to customer’s requirements.

2.How to guarantee the quality of the products？

We have established the international advanced quality management system，every link from raw material to final product we have strict quality test；We resolutely put an end to unqualified products flowing into the market. At the same time, we will provide necessary follow-up service assurance.

3. How long can we receive the product after purchase?

Usually within thirty working days after receiving buyer’s advance payment or LC. We will arrange the factory manufacturing as soon as possible. The cargo readiness usually takes 15-30 days, but the shipment will depend on the vessel situation.

Q:How do steel coils compare to stainless steel coils?: Steel coils and stainless steel coils are both used in various industries, but they differ in their composition and properties. Steel coils are typically made from carbon steel, which is strong and durable but susceptible to corrosion. On the other hand, stainless steel coils are made from an alloy of iron, chromium, and other elements, which provides them with excellent corrosion resistance. Stainless steel coils also have a higher resistance to heat and oxidation, making them suitable for applications that require superior durability and hygiene standards. Overall, stainless steel coils are generally considered to be of higher quality and more suitable for applications where corrosion resistance is crucial.

Q:What are the different methods of annealing steel coils?: Steel coils can be annealed using various methods, each with its own advantages and applications. Full annealing, process annealing, and spheroidize annealing are the main methods. The most common method is full annealing, wherein the steel coils are heated above their critical point (usually between 800 and 900 degrees Celsius or 1472 and 1652 degrees Fahrenheit) and then slowly cooled in a controlled manner. This process refines the grain structure of the steel, making it softer and more ductile. Full annealing is employed to relieve internal stresses, enhance machinability, and improve the overall mechanical properties of the steel. Process annealing, sometimes called subcritical annealing or stress relief annealing, is used to reduce the hardness and brittleness of steel coils. It involves heating the coils below their critical point (typically between 550 and 650 degrees Celsius or 1022 and 1202 degrees Fahrenheit) and then slowly cooling them. This method relieves internal stresses that may have developed during previous manufacturing processes like cold working or welding. Process annealing is commonly used to enhance the formability and toughness of steel coils. Spheroidize annealing is a specialized form of annealing that softens high carbon and alloy steels. It entails heating the steel coils slightly below their critical point (usually between 650 and 700 degrees Celsius or 1202 and 1292 degrees Fahrenheit) and holding them at that temperature for an extended period. This allows the carbides within the steel to transform into rounded or spheroidal shapes, thereby increasing machinability and ductility. Spheroidize annealing is frequently employed in the production of cutting tools, bearings, and other applications that require improved machinability. In addition to these main methods, there are variations and specialized techniques like recrystallization annealing, intercritical annealing, and solution annealing. Each method has specific parameters and temperature ranges. The choice of annealing method depends on factors such as the type of steel, desired mechanical properties, and intended application of the steel coils.

Q:How are steel coils inspected for yield strength using tensile testing?: Steel coils are inspected for yield strength using a testing technique called tensile testing. Tensile testing involves subjecting a sample of the steel coil to controlled tension until it reaches its breaking point. This test helps determine various mechanical properties of the steel, including yield strength. To inspect steel coils for yield strength using tensile testing, a small strip of the coil is cut and prepared for testing. The strip is placed in a tensile testing machine, which consists of two grips that firmly hold the strip at opposite ends. The machine then applies a steadily increasing force to the strip, causing it to elongate until it ultimately breaks. During the test, the machine measures the force applied and the elongation of the strip. The yield strength is determined by identifying the point on the stress-strain curve where the material begins to deform plastically, or exhibit permanent deformation without any increase in load. The yield strength is typically reported as the stress required to cause a specific amount of plastic deformation, commonly 0.2% or 0.5%. This value represents the maximum stress that the steel can withstand without permanent deformation occurring. By conducting tensile testing on a sample of the steel coil, it is possible to determine its yield strength. This information is crucial for ensuring the quality and reliability of the steel coil, as it indicates the maximum stress it can withstand before permanent deformation occurs. Additionally, this testing method allows for the evaluation of other mechanical properties, such as ultimate tensile strength, elongation, and modulus of elasticity, providing a comprehensive understanding of the steel's performance characteristics.

Q:Iron too heavy for Ulysses but if there was any iron used id imagine it was steel. Can steel go deeper into sun than iron? Compare two bolts.. 1steel 1iron..is there a difference to what the steel can do?: Dont understand are you going to put them in sun ? Sun made from gas wich is on fire. Its impossible to get to the sun and not to get burn. Steel is really more solid and strong than iron so its more hard to break it or to bend. But in camparing of fusion temperature - iron is a bit more better, though it would not make a big difference .From metals - tungsten has the highest fusion temperature - near to 3400 C . Iron is near to 1530 C, steel is near to 1300 -1500 C. So according to this tungsten can go most close to sun. Right near the sun temperature is millions of degrees so anything will fuse and burn there.

Q:What are the dimensions of steel coils used in the appliance industry?: The dimensions of steel coils used in the appliance industry can vary depending on the specific application and manufacturer. However, common dimensions for steel coils in the appliance industry range from 0.15mm to 6mm in thickness and 600mm to 2000mm in width.

Q:What are the common processing defects in steel coils?: The common processing defects in steel coils include surface imperfections such as scratches, dents, and stains, as well as edge wave, coil set, camber, and crossbow. Other defects may include coil breaks, oil spots, rust, and uneven thickness or width variation.

Q:It seems that steel would be stonger and more stable than wood, fire resistant, and better for the environment, so why are most homes wood-framed rather than steel-framed?: Because it's always been done that way. Never underestimate inertia when asking why new materials/techniques are not adopted. Besides, the cost does not give steel a clear advantage. You can drive a nail anywhere into a stud. With steel, you have to drill your holes precisely.

Q:What are the common coil finishes available for steel coils?: There are several common coil finishes available for steel coils, each serving different purposes and providing distinct aesthetic appearances. Some of the most frequently used coil finishes include: 1. Hot-dip galvanized: This finish involves immersing the steel coil in a bath of molten zinc, which forms a protective layer on its surface. It provides excellent corrosion resistance and is widely used in outdoor applications such as roofing, fencing, and automotive parts. 2. Galvannealed: This finish is achieved by annealing the hot-dip galvanized steel coil, resulting in a matte gray appearance. Galvannealed coils offer enhanced paint adhesion, making them suitable for applications that require subsequent painting or powder coating, such as appliances and furniture. 3. Electro-galvanized: In this process, a thin layer of zinc is electroplated onto the steel coil's surface. Electro-galvanized finishes provide good corrosion resistance and are commonly used in indoor applications, such as electrical enclosures, HVAC systems, and automotive components. 4. Pre-painted or coated: These finishes involve applying a layer of paint or a coating system to the steel coil, enhancing its appearance and providing additional protection. Pre-painted coils are extensively used in construction, appliances, and automotive industries due to their aesthetic appeal and corrosion resistance. 5. Bare or mill finish: This finish refers to the untreated, raw steel coil without any additional coatings or finishes. Bare steel coils are commonly used in applications where corrosion resistance is not a primary concern, such as structural components, pipes, and tubes. These are just a few of the most common coil finishes available for steel coils, and each offers unique properties and advantages depending on the intended use of the steel coil. It is important to carefully consider the specific requirements of the application to choose the most suitable coil finish.

Q:I'm quite confused...i watched all of steel angel kurumi (the 28 episodes) and then continued to steel angel kurumi zero. it was an entire different story line with only the steel angels being the same. the world is different the guys are different, and there is a new character. Even the humor is gone. its like a whole different series. So what gives, what is the relationship between them?: Steel Angel Zero is an OVA (Original Video Animation), a very short animation that went straight to DVD. It probably was written because Kurumi was so popular, and the producer wanted to check the waters for whether they should make a second season. It's pretty hard to keep track of what anime is which, especially in the more popular series. If you think Zero is worth zero, try Steel Angel Kurumi 2 (anime, 12 episodes), and Steel Angel Kurumi Encore (OVA, 4 episodes) as well.

Q:How are steel coils inspected for surface cleanliness after processing?: Steel coils are inspected for surface cleanliness after processing through visual examination, using techniques such as optical scanning or high-resolution cameras. Additionally, other methods like acid etching or solvent cleaning may be employed to remove any contaminants or residues on the surface to ensure the coils meet the required cleanliness standards.

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