Hot-Dip Galvanized Steel Coil in Good Price and High Quality

Hot-Dip Galvanized Steel Coil in Good Price and High Quality System 1

Hot-Dip Galvanized Steel Coil in Good 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 Steel Coil in Good 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:

Hot-Dip Galvanized Steel Coil in Good Price and High Quality

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 are steel coils used in the production of metal fixtures?: Steel coils are an essential component in the production of metal fixtures. These coils, which are typically made from carbon steel, are used as the primary raw material to manufacture a wide range of metal fixtures. The steel coils are first uncoiled and then cut into sheets of the desired size and thickness. These sheets serve as the base material for different types of metal fixtures, including brackets, hinges, handles, and other structural components. Once the sheets are cut, they undergo various forming processes such as bending, stamping, or rolling. These processes help shape the steel sheets into the specific design required for the metal fixture. For instance, bending may be used to create brackets or angles, while stamping can be used to form intricate patterns or shapes. After the forming processes, the steel sheets are often subjected to welding or joining techniques to assemble multiple components of the metal fixture. Welding ensures that the various parts are securely attached, providing strength and durability to the final product. Furthermore, steel coils also play a crucial role in enhancing the appearance and longevity of metal fixtures. They can be coated or treated with protective layers, such as galvanized or powder coatings, to prevent corrosion and provide a polished finish. These coatings ensure that the metal fixtures can withstand environmental factors and extend their lifespan. In summary, steel coils are an integral part of the production process for metal fixtures. They are transformed into sheets, which are then shaped, joined, and coated to create a wide range of functional and aesthetically pleasing metal fixtures used in various industries.

Q: Are steel coils used in the aerospace industry?: Yes, steel coils are used in the aerospace industry for various applications such as manufacturing aircraft components, structural parts, and engine components.

Q: What are the different coil slitting methods used for steel coils?: Steel coils can be slit into smaller, narrower coils using various methods. These methods serve the purpose of cutting the coils to suit specific applications. 1. The most commonly used method for coil slitting is blade slitting. Circular knives or blades are employed to cut the steel coil into narrower strips. These blades are placed at predetermined intervals and usually attached to a rotating shaft. As the coil passes through the blades, their circular motion slices through the coil, resulting in the desired narrower strips. 2. Another method, known as rotary shear slitting, involves the use of two sets of rotary shear knives to cut the steel coil. These upper and lower sets of knives rotate in opposite directions, creating a scissor-like cutting action. As the coil is fed through the shearing blades, the sharp edges of the knives slice through the coil, producing the desired narrower strips. 3. Sliding shear slitting is yet another method utilized for coil slitting. This method involves a stationary upper knife and a moving lower knife to cut the coil. The lower knife moves back and forth across the coil while the upper knife remains fixed. As the coil passes through the moving knife, it is cut into narrower strips. 4. Crush slitting is a less common method employed for coil slitting. In this method, the steel coil is fed through a set of rollers equipped with blades. Although the blades are not sharp, the pressure exerted by the rollers crushes and fractures the coil, resulting in the creation of the desired narrower strips. 5. Laser slitting is a modern and precise method used for coil slitting. It utilizes a laser beam to cut through the steel coil. The laser beam is directed onto the coil, and its high intensity melts and vaporizes the steel, creating a narrow slit. Laser slitting offers high accuracy and a clean cut, making it suitable for specialized applications. Each of these coil slitting methods possesses its own advantages and limitations. The choice of method depends on factors such as the type of steel, desired strip width, production volume, and required precision. Manufacturers select the most suitable method based on their specific requirements and the properties of the steel coils they are processing.

Q: What are the different coil coatings available for steel coils?: There are several different coil coatings available for steel coils, including polyester, silicone modified polyester (SMP), polyvinylidene difluoride (PVDF), plastisol, and epoxy. Each coating has its own unique properties and advantages, such as durability, weather resistance, and color retention, allowing for a wide range of applications in various industries.

Q: How are steel coils used in the manufacturing of aerospace components?: Steel coils are used in the manufacturing of aerospace components as they provide a reliable source of high-quality steel. These coils can be shaped, cut, and formed into various aerospace parts such as fuselage frames, landing gear, engine components, and wing structures. The strength and durability of steel make it an ideal material for withstanding the extreme conditions and stresses experienced by aircraft during flight, ensuring the safety and performance of aerospace components.

Q: Can solution annealing be done on carbon and low alloy steels. please give an explanatory answer.: No. Carbon steel has two different crystal structures, FCC and BCC , depending on the temperature. when you heat steel up and then quench it, it locks the crystal structure into the BCC form. this makes it hard. whereas precipitation hardened austentic stainlesses remain BCC regardless of the temp, so the hardness change is not a function of thermally induced strain. you can anneal carbon steel but the thermal profile is closer to the precipitation profile of PH stainlesses than it is to the Solution annealing profile.

Q: What are the main factors that affect the flatness of steel coils?: The main factors that affect the flatness of steel coils are the quality and thickness of the steel material, the tension and speed of the rolling process, the temperature and cooling rate during the cooling process, and any potential defects or imperfections in the machinery used for rolling and cooling the steel coils.

Q: How are steel coils inspected for formability?: Steel coils are inspected for formability through a combination of visual inspection, physical testing, and advanced technologies such as laser scanning and digital image correlation. These methods assess the coil's surface condition, dimensional accuracy, and mechanical properties to ensure it meets the required standards for various forming processes.

Q: How are steel coils inspected for straightness?: Steel coils are inspected for straightness through a variety of methods to ensure they meet the required quality standards. One common method is visual inspection, where trained inspectors visually examine the coil for any visible defects or deformations that may indicate a lack of straightness. They carefully observe the coil's edges, surface, and overall shape to identify any irregularities. Another method used is measuring the coil's straightness using precision instruments. This involves taking measurements at various points along the coil's length and comparing them against specified tolerances. Techniques such as laser measurements or straightness gauges are employed to accurately assess the deviation from the desired straightness. Furthermore, some coils undergo non-destructive testing, such as magnetic particle inspection or ultrasonic testing, to identify any internal defects or stresses that could affect the straightness. These tests can reveal hidden flaws that may not be evident through visual inspection alone. In addition, some manufacturers may employ automated inspection systems that utilize advanced technologies like computer vision or artificial intelligence. These systems can quickly scan the coil's surface and analyze it for any deviations from straightness, providing precise measurements and ensuring consistent quality. Overall, the inspection of steel coils for straightness involves a combination of visual inspection, precise measurements, non-destructive testing, and advanced technologies. These methods aim to identify any deviations from the required straightness, ensuring that only coils meeting the specified standards are used in various applications.

Q: who, when and where was dual phase steel invented?: Dual Phase steels refers to a distinct group of alloys which are used for automotive bodies. These were developed to give improved deep drawing (for shaping) and strength while on the road. Most of the work was started at the same time in the 1970s as a response to the oil crisis (history repeats!) with SSAB in Europe, US Steel and British Steel leading the way. There are many variants of the dual phase alloys prefered by each of the auto manufacturers. The work on these steels led the way for TRIP (transformation induced plasticity) steels, rephosphorised steels and HSLA (high strength low alloy) steels. There is a distinction between these steels and duplex steels which typically refer to austenitic/ferrtic stainless steels. Also be aware that everyday low carbon steels with 0.1%-0.6% carbon will have a ferritic/pearlitic structure but are not considered to be dual phase So to summarise: Who - major steel companies worldwide When - from about 1973 onwards (up to around 1977 when the developments went in other directions) Where - Europe, USA and Japan (but I'm not sure who it was in Japan doing the work)

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