The Cheap Hot-dip Zinc Coating Steel Building Roof Walls JIS G3302

The Cheap Hot-dip Zinc Coating Steel Building Roof Walls JIS G3302 System 1

The Cheap Hot-dip Zinc Coating Steel Building Roof Walls JIS G3302

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 50 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

The Cheap Hot-dip Zinc Coating Steel Building Roof Walls JIS G3302

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: 0.18mm~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	Tensile strength	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 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. 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: were iron age weapons made of steel?: Even in very early iron, a small amount of steel was produced by carburization, where the iron picks up carbon by laying in hot coals before quenching. This produces a thin layer of steel on the surface of the iron. By about 300 BC Damascus steel was being produced by the crucible method on the Indian subcontinent, and the Romans used steel from Noricum. In the first century BC the Chinese were melting cast iron and wrought iron together to make steel.

Q: What are the quality control measures for steel coil production?: Quality control measures for steel coil production are essential to ensure that the final product meets the required standards and specifications. Here are some key quality control measures commonly employed in the steel coil production process: 1. Raw Material Inspection: Before production starts, the raw materials such as steel billets are thoroughly inspected for their chemical composition, mechanical properties, and surface defects. This ensures that only high-quality materials are used in the production process. 2. Process Control: Throughout the production process, various process control measures are implemented to monitor and control critical parameters. These may include temperature control, rolling speed, tension control, and lubrication. Regular checks and adjustments are made to ensure that these parameters are within the specified tolerances. 3. Dimensional and Surface Inspection: Steel coils undergo rigorous dimensional and surface inspections to ensure that they meet the required thickness, width, and length specifications. Surface defects such as scratches, pits, or dents are also carefully examined and minimized to meet quality standards. 4. Mechanical Testing: Mechanical properties such as tensile strength, yield strength, elongation, and hardness are tested on a regular basis. These tests are crucial to ensure that the steel coils possess the desired strength and performance characteristics. 5. Visual Inspection: Visual inspection is an important quality control measure to identify any visible defects or irregularities in the steel coils. Trained inspectors check for issues like cracks, corrosion, or uneven surfaces, and take necessary actions to rectify or reject the faulty coils. 6. Non-Destructive Testing: Non-destructive testing methods like ultrasonic testing, magnetic particle testing, or eddy current testing are often employed to detect internal defects such as voids, inclusions, or discontinuities that may impact the quality of the steel coils. 7. Documentation and Traceability: Proper documentation and traceability of all quality control measures are maintained throughout the production process. This includes recording test results, inspection reports, and other relevant data to ensure transparency and accountability. 8. Continuous Improvement: Quality control measures in steel coil production are not static but subject to continuous improvement. Regular audits, feedback from customers, and analysis of process data are used to identify areas for improvement and implement corrective actions to enhance product quality. By implementing these quality control measures, steel coil manufacturers can ensure that the final product meets the required specifications, performs reliably, and achieves customer satisfaction.

Q: How are steel coils uncoiled?: Steel coils are typically uncoiled using a machine called a decoiler or uncoiler, which gradually unwinds the coil by feeding it through a set of rollers. The rollers apply tension to the coil, allowing it to unwind smoothly and evenly. The speed and direction of the uncoiling process can be controlled to match the specific requirements of the application.

Q: How are steel coils inspected for surface finish variations?: Steel coils are inspected for surface finish variations by using techniques such as visual inspection, magnetic particle inspection, and surface roughness measurement.

Q: How are steel coils processed for cold rolling or hot rolling?: Steel coils are processed for cold rolling or hot rolling through a series of steps. For cold rolling, the steel coil is first uncoiled and then cleaned to remove any dirt or impurities. It is then passed through a series of rollers to reduce its thickness and improve its surface finish. On the other hand, for hot rolling, the steel coil is heated to high temperatures and then run through a set of rollers to reduce its thickness and shape it into the desired form. Both processes involve careful control of temperature, pressure, and speed to achieve the desired properties and dimensions of the steel.

Q: What are the common coil coating methods?: The common coil coating methods include roll coating, curtain coating, and spray coating.

Q: When I got my AR-15 I was told that I should get either get Brass or Steel Case ammo and stick with one or the other, I was wondering why? It surely wouldn't damage anything switching back and forth between the two would it? I got steel case ammo and I have stuck with It and probably will either way, I was just wanting to know it I ever wanted to get some Hornady's or somthing like that.: my uncle is a cop and he received't run metal case by skill of his ar. it actualy did reason it to jam, and he cleans it after each decision visit. the element with ars is they are very low tollerance and require softer metals which will push them round esier. by skill of the years, metal will also positioned on down your internals swifter than brass because brass is softer. some mags each once in a lengthy time period wont damage some thing, yet when i wouldnt completely use metal case in mine.

Q: What are the common coil weight and width combinations available for steel coils?: The common coil weight and width combinations available for steel coils vary depending on the specific industry and application. However, some commonly available coil weight and width combinations for steel coils include weights ranging from 1 to 40 metric tons and widths ranging from 600 to 2,000 millimeters. These combinations can be tailored to meet the requirements of different manufacturing processes and end-user needs.

Q: Hey everyone.I have a whetstone and a honing steel. I purposely tried to make one of my knives less sharp twice to see how well the whetstone and honing steel would work.It even seemed that when I was using my whetstone it wasn't as sharp as it was when I used my honing steel, but when I also used my honing steel after having sharpened my knife on the whetstone, it was razor sharp.I was wondering, is the whetstone only supposed to be used when the knife edge isn't as flat anymore or something? Like, only when it doesn't really have an edge anymore?Please explain your answer.Thanks everyone.: You're not supposed to use the whetstone alone. It leaves a burr, which the steel removes. If you google using a whetstone, you'll see plenty of info. It is possible to use a finer stone in place of the steel.

Q: What are the different methods of coil packaging for steel coils?: There are several methods of coil packaging for steel coils, including stretch wrapping, strapping, banding, and shrink wrapping. Stretch wrapping involves wrapping a stretch film tightly around the coil to secure it. Strapping and banding use metal or plastic straps to hold the coils together. Shrink wrapping involves covering the coil with a plastic film that shrinks when heated, providing a tight and protective cover. These methods help to protect the coils during storage, transportation, and handling, ensuring they remain in good condition.

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