Zinc Coated Galvanized Steel Coil of GI System 1

Zinc Coated Galvanized Steel Coil of GI

Ref Price:

Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 10000 m.t./month

Inquire Now

Add to My Favorites

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

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

Zinc Coated Galvanized Steel Coil of GI

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:

Zinc Coated Galvanized Steel Coil of GI

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 coated or painted?: Steel coils are typically coated or painted using a process known as coil coating. This involves a series of steps including cleaning, pretreating, applying primer, and applying the final topcoat. The coils are first cleaned to remove any dirt or contaminants. They are then pretreated to enhance adhesion and corrosion resistance. After that, a primer is applied to provide a base layer for the paint. Finally, the desired topcoat is applied using various methods such as roll coating, spray coating, or electrostatic coating.

Q: Can steel coils be coated with anti-slip materials?: Yes, steel coils can be coated with anti-slip materials.

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: What are the typical coil thickness options?: The typical coil thickness options vary depending on the specific application and industry. However, common coil thickness options range from 0.005 inches to 0.250 inches (0.127mm to 6.35mm), with various intermediate thicknesses available.

Q: What are the common handling defects in steel coils?: Some common handling defects in steel coils include coil damage, coil slippage, coil edge damage, coil distortion, and coil contamination. These defects can occur during transportation, loading and unloading, handling, and storage of the coils.

Q: this is for a school project due morrow can u please answerwhat are disadvantages of stainless steelplease also show were u got info ty: Disadvantages of Stainless Steel: 1. High initial cost 2. Difficult to fabricate, or in other words, it is not as malleable as other metals, say iron, and hence if not fabricated properly, results in costly re-work. 3. Difficult to weld 4. High cost of polishing etc. i.e. adding finishing touches for the market. Also, for the record: Stainless steel does NOT rust. One of the advantages of it over other metals (steel and iron) are that it is rust-free. But of course, depending on the environment condition (E.g. long periods in a rainforest without use at all) it can rust....this is a very rare (and unfortunate) situation. ;)

Q: How are steel coils stored and transported?: Steel coils are typically stored and transported in a horizontal position, either on the ground or on specially designed racks. They are often secured with steel straps or bands to prevent movement or damage during transportation. When being transported, steel coils are typically loaded onto flatbed trucks or shipping containers using cranes or forklifts. The coils are then secured in place with additional straps or chains to ensure stability during transit.

Q: How are steel coils protected against UV radiation?: Steel coils are protected against UV radiation through the application of protective coatings or paints. These coatings act as a barrier, shielding the steel from direct exposure to UV rays, preventing oxidation and degradation of the metal.

Q: Why can't the coil weight be too low?: And may make the level stacked steel coil collapse, rolling, produce production safety accidents.

Q: How are steel coils inspected for weldability?: Steel coils are inspected for weldability through a series of comprehensive tests and examinations. The main objective of this inspection is to assess the quality and suitability of the steel coils for welding processes. Firstly, visual inspection is conducted to identify any visual defects or irregularities on the surface of the coils. This includes checking for surface roughness, cracks, scratches, or any other imperfections that may affect the weldability. Next, destructive testing methods such as tensile testing and impact testing are performed. Tensile testing measures the strength and ductility of the steel, ensuring it meets the required mechanical properties for welding. Impact testing evaluates the steel's resistance to brittle fracture, which is crucial in determining its weldability. Furthermore, non-destructive testing techniques such as ultrasonic testing (UT) and magnetic particle inspection (MPI) are employed to detect internal defects and discontinuities. UT uses high-frequency sound waves to identify any hidden flaws within the steel, while MPI utilizes magnetic particles to identify surface and near-surface defects. Additionally, chemical analysis is carried out to determine the steel's composition and ensure it meets the required specifications for welding. This analysis involves checking the levels of carbon, manganese, sulfur, and other elements that may affect the weldability and overall performance of the steel. Moreover, weldability testing is performed to evaluate the steel's response to welding processes. This involves conducting various welding trials using different techniques and parameters to determine the steel's behavior during welding, such as its susceptibility to cracking, distortion, or other welding-related issues. Overall, the inspection of steel coils for weldability is a multi-faceted process that combines visual, destructive, non-destructive, chemical, and weldability testing methods. By conducting these thorough inspections, manufacturers can ensure that the steel coils meet the required standards and are suitable for welding applications.

Send your message to us

*Email

*TEL

*Quantity

*Unit