GI Hot-Dip Galvanized Steel Coil Prime Quality

GI Hot-Dip Galvanized Steel Coil Prime Quality System 1

GI Hot-Dip Galvanized Steel Coil Prime Quality

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 200 m.t.

Supply Capability:: 10000 m.t./month

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1.Structure of Galvanized Steel Coil 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.

2.Main Features of the Galvanized Steel Coil：

• Base material for countless outdoor and industrial applications

• High corrosion resistance

• High strength

• Good formability

• Rust- proof ability

• Good visual effect

3.Galvanized Steel Coil Images

GI Hot-Dip Galvanized Steel Coil Prime Quality

4.Galvanized Steel Coil Specification

Operate Standard: ASTM A653M-04/JIS G3302/DIN EN10143/GBT 2518-2008

Grade : SGCD,SGCH, Q195,DX51D

Zinc coating :40-180g( as required)

Width:914-1250mm(914mm, 1215mm,1250mm,1000mm the most common)

Coil id:508mm/610mm

Coil weight: 4-10 MT(as required)

Surface: regular/mini/zero spangle, chromated, skin pass, dry etc.

GI Hot-Dip Galvanized Steel Coil Prime Quality

5.FAQ of Galvanized Steel Coil

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

1.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.

2. What is the minimum order quantity ?

Our MOQ is 50mt for each size. And we will consider to give more discount if you make big order like 1000 tons and more. Further more, the more appropriate payment term your offer the better price we can provide.

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 15-25 days, but the shipment will depend on the vessel situation.

Q:How are steel coils used in the manufacturing of shipping containers?: Steel coils are used in the manufacturing of shipping containers as they are rolled into sheets, which are then cut and welded to create the walls, roof, and floor of the container. The high strength and durability of steel coils ensure that the shipping containers can withstand the rigors of transportation, protecting the goods inside.

Q:What is the average tensile strength of a steel coil?: The average tensile strength of a steel coil can vary depending on the specific type and grade of steel being used. However, on average, steel coils tend to have a tensile strength ranging from 300 to 2,000 megapascals (MPa).

Q:What are the different types of steel coil surface treatments?: The different types of steel coil surface treatments include hot-dip galvanizing, electro-galvanizing, organic coating, and pickling and oiling.

Q:What are the dimensions and weight range of steel coils?: Steel coils can come in various dimensions and weight ranges depending on the intended use and industry requirements. The dimensions of steel coils typically range from 0.15mm to 3.5mm in thickness, and from 600mm to 2,000mm in width. The weight range of steel coils can vary widely, but commonly falls between 5 and 25 metric tons. The specific dimensions and weight range of steel coils are determined by factors such as the type of steel, the production method, and the desired application.

Q:I know that the steel is significantly harder than when air cooled, but why is the quenched steel harder?: When steel is slowly cooled, lots of carbon diffusion takes place because it is not very soluble in steel at room temperature. The carbon is in solution at high temperatures, and is rejected out of the lattice as it cools. And when this happens, the microstructure will consist of ferrite and pearlite, and the lattice structure will be base centered cubic (bcc). If it is cooled fast enough, then the carbon gets trapped in the interstitial sites of the lattice and distorts it to a body centered tetragonal (same as bcc, but elongated in one direction) This elongation strains the lattice and makes it harder. Also, when cooled fast enough the atoms do not have time to diffuse like they normally would and they shear into place. This forms the hard phase of martensite that is desired of heat treated steel. But then it must be tempered back some because it is too brittle.

Q:How do steel coils compare to other materials?: Steel coils have several advantages over other materials. Firstly, steel is known for its high strength and durability. This makes steel coils highly resistant to wear and tear, making them suitable for a wide range of applications. Additionally, steel coils have excellent heat resistance, making them ideal for use in high-temperature environments. Furthermore, steel coils have superior corrosion resistance compared to many other materials. This is especially important in industries such as construction and automotive, where exposure to moisture and chemicals is common. Steel coils can withstand these harsh conditions, ensuring long-lasting performance and reliability. Another advantage of steel coils is their versatility. Steel can be easily molded into various shapes and sizes, allowing for customization and flexibility in design. This makes steel coils suitable for a wide range of applications, including manufacturing, construction, transportation, and energy industries. Moreover, steel coils offer good value for money. Despite their numerous benefits, steel coils are generally more affordable compared to other materials such as aluminum or copper. This makes steel coils a cost-effective choice for businesses and industries looking for high-quality and reliable materials. In summary, steel coils have several advantages over other materials. They offer high strength, durability, and heat resistance, along with superior corrosion resistance. Steel coils are also versatile and can be easily customized to suit different applications. Additionally, they provide good value for money. Overall, steel coils are a reliable and efficient choice for various industries and applications.

Q:Consider a steel rod of diameter 4.5 mm and length 3.3 m. If a compressive force of 4900 N is applied to each end, what is the change in the length of the rod?: You need to calculate the stress on the rod and compare this with the mechanical properties of the steel. It would help if you were given more info. You will need to know something about the steel such as the yeild stress and E, the modulus of elasticity. The value of E is about the same for a wide range of steels. So long as the applied stress is below the yield stress, the strain is all elastic and is calculated from E. The real answer is that you can not answer this question since you do not know what the temperature is. Given the applied load, the change in length will be much different at room temperature than at 1500C.

Q:How are steel coils used in the production of steel beams?: Steel coils are an essential component in the production of steel beams. These coils are typically made by hot rolling steel strips in a continuous process. The coils are then sent to a steel beam manufacturing facility to be further processed. Firstly, the steel coils are uncoiled and flattened to obtain a flat surface. This ensures the uniformity of the beam's dimensions and improves the overall quality. The uncoiling process involves feeding the coil through a series of rollers, which gradually unroll the steel strip. Once the steel strip is uncoiled, it is then cut into specific lengths, depending on the desired size of the steel beams. This cutting process is typically done using automated machines, which ensure precision and accuracy. Next, the cut steel strips are shaped into the desired profile of the steel beams. This is achieved through a process called roll forming, where the steel strip is passed through a series of rollers that gradually bend and shape it into the required shape. The roll forming process can create various types of steel beams, such as I-beams, H-beams, and U-beams, depending on the design and structural requirements. After the roll forming process, the steel beams undergo further finishing operations, such as straightening, welding, and surface treatment. Straightening ensures that the beams are perfectly aligned and free from any deformations. Welding is performed to join different sections of the beams together, ensuring their structural integrity. Lastly, the beams are surface treated, usually through processes like shot blasting or painting, to protect them from corrosion and enhance their appearance. In summary, steel coils play a crucial role in the production of steel beams. They provide the raw material that is uncoiled, cut, shaped, and further processed to create high-quality steel beams. These beams are widely used in various construction projects, ranging from buildings and bridges to industrial structures, making them an essential component in the construction industry.

Q:What are the common applications of galvanized steel coils?: Galvanized steel coils are commonly used in a variety of applications such as construction, automotive manufacturing, and the production of household appliances. They are used for roofing, siding, and structural components in buildings due to their corrosion resistance and durability. In the automotive industry, galvanized steel coils are used for manufacturing car parts, such as body panels and frames, to enhance their strength and longevity. Additionally, they are utilized in the production of household appliances like refrigerators, washing machines, and air conditioning units, as the galvanized coating protects against rust and extends the lifespan of these products.

Q:How are steel coils inspected for thickness and width accuracy?: Steel coils are inspected for thickness and width accuracy using non-destructive testing methods such as ultrasonic testing and laser measurement systems. Ultrasonic testing involves sending high-frequency sound waves through the coil, and by analyzing the reflected waves, the thickness of the steel can be determined. Laser measurement systems use lasers to scan the width of the coil, providing precise measurements. These inspection methods help ensure that steel coils meet the required thickness and width specifications.

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