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Basic Information
Hot-dip galvanized coils can be divided into hot-rolled galvanized coils and cold-rolled hot-dip galvanized coils, which are mainly used in construction, home appliances, automobiles, containers, transportation and household industries. Especially steel structure construction, automobile manufacturing, steel silo manufacturing and other industries. Their main features are: strong corrosion resistance, good surface quality, conducive to deep processing, economical and practical, etc.
Product Details
There are mainly several kinds of surface glitter:
1. Spangle Coating
In the normal solidification process of zinc layer, zinc grains grow freely and form a coating with obvious zinc flower morphology.
2. Minimized Spangle Coating
During the solidification process of zinc layer, the zinc grains are artificially limited to form the smallest zinc flower coating as possible.
3. Spangle-Free
By adjusting the chemical composition of the plating solution, there is no visible zinc flower morphology, and the surface is uniform.
4. Zinc-Iron Alloy Coating
Heat treatment of the steel strip after the galvanized bath, so that the entire coating to produce zinc and iron alloy layer, this coating appearance is dark gray, no metallic luster, easy to powder in the vigorous forming process, suitable for in addition to general cleaning, without further treatment can be directly painted coating.
5. Differential Coating
On both sides of the galvanized steel sheet, a coating with different zinc layer weights is required.
6. Skin Pass
Finishing is a cold rolling process of small deformation on galvanized steel plates for one or more of the following purposes.
Improve the surface appearance of galvanized steel or suitable for decorative coating; To temporarily minimize the phenomenon of slip lines (Luders lines) or creases that occur when the finished product is not processed.
Product Parameters
| Product name | Hot Dipped AZ150 Galvalume Steel Coil DX51D Z275 Galvanized Plate in Coil |
| Standard | JIS G3321 / ASTM A792M / EN10215 |
| Grade | SGLCC/SGLCD/SGLC490/SGLC570/ CS TypeA,B,C/DS/255/DX51D/DX52D |
| Thickness | 0.12-2mm |
| Width | According to customer's requirement, (usual size:1000mm,1200mm,1250mm,1500mm) |
| Zinc weight | 30-600g/m2 |
| Coil weight | 5-8tons |
| Spangle | Mini/regular/big/zero spangle |
| Grade | Yield Strength | tensile strength | Mechanical properties elongation after breaking | R 90 | N 90 |
| MPa | MPa | A 80mm % not less than | not less than | not less than | |
| DX51D+Z | 240~380 | 270~500 | 24 | - | - |
| DX52D+Z | 140~300 | 270~420 | 26 | - | - |
| DX53D+Z | 140~260 | 270~380 | 30 | - | - |
| DX54D+Z | 120~220 | 260~350 | 36 | 1.6 | 0.18 |
Next for you in detail!
First, raw material preparation.
The raw material of galvanized steel coil is ordinary steel coil, which is processed into the required size flat plate after cutting, polishing, leveling, slinting and other processes. In this process, the key step is of course cutting and scuttling, we think that to ensure the dimensional accuracy of the steel coil and the flatness of the shear edge is not very critical?
Second, surface treatment.
Before galvanizing, the steel coil needs to be surface treated. First, the surface of the steel coil is pickled with hydrochloric or sulfuric acid to remove surface rust and dirt. Then, rinse well with water and dry with compressed air. The purpose of this is to ensure that the galvanized layer can be tightly attached to the steel surface, thereby improving the anti-corrosion effect.
Three, hot dip galvanizing.
Hot dip galvanizing is an important step in the processing of galvanized steel coils. The treated steel coil is put into the galvanized tank, and the zinc layer is covered on the steel surface after melting at high temperature to form a zinc alloy layer. This process needs to be carried out at high temperatures, and the general temperature is controlled between 450-500 ° C. At the same time, it is necessary to control the thickness of zinc layer in order to achieve better anti-corrosion effect.
Fourth, cooling and passivation.
After hot dip galvanized steel coils need to be cooled and passivated. Cooling can be water cooling or air cooling, the purpose is to allow the steel coil to cool quickly, so as not to affect the structure and performance of the zinc layer. Passivation is to enhance the corrosion resistance of the zinc layer, and chromate passivation agent is generally used for surface treatment.
Fifth, Winding and packaging.
The steel coil after the above treatment can be rewound and packaged. The galvanized steel coil is collected by a winder and then packaged. When packaging, it is necessary to ensure that the steel coil is not scratched or contaminated, and to ensure that the product identification is clear and accurate.
Sixth, Quality inspection.
In the process of processing galvanized steel coil, it is necessary to conduct quality inspection. The test contents include dimensional accuracy, surface quality, zinc layer thickness, etc. These test indexes directly affect the quality and anticorrosion effect of galvanized steel coil. Only products that meet the standards can be sold outside the factory.
First, the construction field.
The application range of galvanized coil in the construction field is extremely wide, mainly used in the production of anti-corrosion building materials, such as roof panels, wall panels, cover panels, doors and Windows. Due to its good corrosion resistance and strength, galvanized coil can effectively resist the corrosion of various climates and environments and extend the service life of building materials.
Second, automobile manufacturing.
Galvanized coils are also widely used in the automobile manufacturing industry. Galvanized coil can be made of automobile body materials, interior panels, chassis panels, etc. Due to its good mechanical properties and corrosion resistance, galvanized coil can greatly improve the safety and service life of the car, while also reducing the frequency of maintenance and replacement.
Third, home appliance manufacturing.
Galvanized coil also has important applications in the home appliance manufacturing industry. Home appliance manufacturers commonly use galvanized rolls to make enclosures and internal components for products such as refrigerators, air conditioners, washing machines, and microwave ovens. Due to its corrosion resistance, wear resistance and good appearance, galvanized coil can improve the quality and service life of household appliances.
Fourth, Other areas.
In addition to the construction, automotive and appliance manufacturing industries, galvanized coils can be used in many other fields. For example, galvanized coils can be made into battery shells, condenser plates, water pipes, etc. In these applications, galvanized coils can provide excellent corrosion resistance and mechanical properties, extending the service life of the product.
In general, galvanized coil is a widely used anti-corrosion steel product, suitable for construction, automobiles, home appliances and other fields. It has excellent mechanical properties and corrosion resistance, which can greatly improve the quality and service life of the product.
Hebei Leicheng Electric Power Technology Co., LTD is a technology-oriented enterprise specializing in R&D, production, sales and services of power transformers, HV/LV switch cabinets and related products.
Since its inception, our company has been committed to the path of professional development. By virtue of its strong technical force, domestic and foreign advanced equipment, innovative ideas and extensive manufacturing experience, it has been certified by ISO9000 and adopts CAD to provide customers with environment-friendly, energy-saving, low-carbon and high-quality products suitable for regional characteristics to meet the market and the basic requirements of different customers.
Currently the company mainly produces HV/LV power distribution cabinets, pre-fabricated substations, power distribution transformers, HV/LV switches and other products.
Its products cover the national market of China. Also the products are exported to Central Asia, Africa, Southeast Asia, the Middle East, South America and other countries and regions.
Q: Are you a Manufacturer, factory or Trading company ?
A: Yes, We are engaging in the research and development, production and operation of transformer for over 10 years.
Q: What's your warranty terms?
A: We offer 12 months warranty time.
Q: Production Time?
A: In general, it take 4~6weeks and it depend on the different style.
Q: What's your payment terms?
A: Pay by T/T and L/C is acceptable.
Q: How do you conduct quality control in your factory?
A: We implement 100% QC inspection to ensure every product is qualified. We have over 10 times QC inspections during the manufacturing process from raw material to the final products.Each of our unit has 3C certificate. If you need any other Certificate, we can help you to apply it.
Q: Do you have the products in stock?
A: Normally no. All our products produce depending to your order quantity.
Q: What should provide to make custom transformer ?
A: Technical drawing and technical specification document are the best, or you can tell us some details technical specification date as below "Quotation and Ordering Required Information".
Q: Could I have your catalog and price list for trial order in MOQ quantity?
A: All of our products are showing on Made-in-China or official website, you are always welcome to ask us to get more information directly.
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