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Galvalume Steel Coil
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| Place of Origin | China |
| Brand Name | DECHO |
| Certification | ISO 9001:2015 Certificate |
| Model Number | ASTM A792M CS-B |
Golden Color AFP Anti-Finger Print Galvalume Steel AuzincCoil A792M DX51D Regular Minimum Spangle Stone Coated Roof Tile
Galvalume Steel Coil(55% Aluminium-Zinc Alloy Coated Steel Coil)
Introduction:
55% Aluzinc steel coils, also known as Galvalume or Aluminium-Zinc alloy coated steel, are a type of steel coated with an alloy comprising approximately 55% aluminum, 43.4% zinc, and 1.6% silicon. This unique coating provides a combination of the excellent corrosion resistance of aluminum and the galvanic protection of zinc, making it a superior material for various applications.
Composition:
- Aluminum (55%): Provides exceptional corrosion resistance by forming a protective layer of aluminum oxide.
- Zinc (43.4%): Offers sacrificial protection, similar to traditional galvanized steel, protecting the steel substrate by corroding preferentially.
- Silicon (1.6%): Enhances adhesion of the coating to the steel and helps maintain the integrity of the alloy layer during fabrication.
Global Production and Demand:
- The production of Aluzinc steel coils is a global industry, with major manufacturers located in countries such as China, Japan, South Korea, the United States, and several European nations. These manufacturers leverage advanced technologies to produce high-quality Aluzinc steel that meets international standards.
- The demand for Aluzinc steel coils continues to grow, driven by the increasing need for durable, long-lasting materials in construction, infrastructure, and various industrial applications. The material’s performance in harsh environments, combined with its cost-effectiveness over the long term, makes it a popular choice.
Sustainability and Environmental Considerations:
- Aluzinc steel coils contribute to sustainability efforts due to their long lifespan and recyclability. The ability to recycle Aluzinc steel without significant loss of quality supports the circular economy and reduces the environmental impact of steel production.
- Manufacturers are also focused on developing more eco-friendly coating processes and improving energy efficiency in production to minimize the environmental footprint.
Proper storage of Aluzinc steel coils during the rainy season is essential to prevent corrosion and maintain the quality of the material. Here are the guidelines and precautions for storing Aluzinc steel coils during wet weather:
Storage Guidelines
1. Indoor Storage:
- Warehouse Environment: Store the coils in a dry, well-ventilated warehouse to protect them from rain and high humidity.
- Elevation: Place the coils on elevated platforms or pallets to keep them off the ground and prevent contact with water.
- Temperature and Humidity Control: Maintain a stable temperature and humidity level inside the warehouse to prevent condensation on the coils.
2. Outdoor Storage:
- Covering: If indoor storage is not possible, cover the coils with waterproof tarpaulins or plastic sheets. Ensure that the covers are tightly secured to prevent water ingress.
- Proper Ventilation: Leave some space for air circulation under the covers to avoid moisture buildup and condensation.
- Inclination: Store the coils at a slight incline to facilitate water runoff and prevent pooling on the surface.
3. Packing:
- Sealed Packaging: Use moisture-resistant packaging materials to wrap the coils tightly. Consider vacuum-sealing or using desiccants inside the packaging to absorb any residual moisture.
- Edge Protection: Apply edge protectors to the coils to prevent damage during handling and storage.
Precautions
1. Inspection:
- Regular Checks: Periodically inspect the coils for signs of moisture or water damage. Pay special attention to edges and seams where water can seep in.
- Remove Moisture: If any moisture is detected, dry the affected areas immediately and reapply protective covers or packaging as needed.
2. Handling:
- Avoid Wet Surfaces: Ensure that forklifts, cranes, and other handling equipment are dry and clean before use to prevent transferring moisture to the coils.
- Careful Movement: Handle the coils gently to avoid scratching or damaging the protective coating, which can expose the underlying steel to corrosion.
3. Storage Area Maintenance:
- Cleanliness: Keep the storage area clean and free of debris that could trap moisture or damage the coils.
- Drainage: Ensure proper drainage systems are in place around the storage area to prevent water accumulation.
Best Practices
1. First In, First Out (FIFO):
- Implement a FIFO system to ensure older stock is used before newer stock, minimizing the time coils spend in storage.
2. Documentation:
- Keep detailed records of storage conditions, inspections, and maintenance activities to track the condition of the coils and address any issues promptly.
By following these guidelines and precautions, you can effectively store Aluzinc steel coils during the rainy season and maintain their quality and performance.
European Standards EN 10346:2015
| Standards | Steel grade | Thickness(mm) | Width(mm) | Coating Mass (g/square meter) |
|---|---|---|---|---|
| EN 10346 | DX51D, DX52D, DX53D, DX54D, S220GD, S250GD, S280GD, S320GD, S350GD S550GD |
0.2 - 1.2 | 800 - 1,250 | AZ100 AZ150 AZ185 |
America standards ASTM A792M
| Standards | Steel grade | Thickness(mm) | Width(mm) | Coating(g/square meter) |
|---|---|---|---|---|
| ASTM A792M | CS(TYPE A, B, C) FS(TYPE A, B) DS DDS SS GRADE 33(230) 37(255) 40(275) 50(340) CLASS 1~3 80(550) CLASS 1~3 |
0.2 - 1.2 | 800 - 1,250 | AZM100 AZM110 AZM120 AZM150 AZM165 AZM180 |
Japanese Standard JIS G 3321
| Standards | Steel grade | Thickness(mm) | Width(mm) | Coating(g/square meter) |
|---|---|---|---|---|
| JIS G 3321 | SGLCC SGLCD SGLCDD SGLC400 SGLC440 SGLC490 SGLC570 |
0.2 - 1.2 | 800 - 1,250 | Z06(60) Z08(80) Z10(100) Z12(120) Z14(140) Z18(180) Z20(200) Z22(220) Z25(250) Z27(270) |
Australian Standard AS1397
| Standards | Steel grade | Thickness(mm) | Width(mm) | Coating |
|---|---|---|---|---|
| AS1397 | G1~G3 G250 G300 G350 G450 G500 G550 |
0.2 - 1.2 | 800 - 1,250 | AZ150 AZ200 |
| SURFACE TREATMENT | DESCRIPTION OF USE |
| CHROMATE PASSIVATION(C) | Surface treatment for high-strength steel plates after hot-dip plating to reduce white rust during transport and storage |
| Chrome-free passivation(C5) | Surface treatments that require limiting the amount of hexavalent chromium, etc. in passivation solutions that are harmful to the environment and humans |
| Anti-finger print(N) | Surface treatment after the passivation process, which acts as a lubricant during processing, prevents fingerprints from staining during operation, and prevents premature blackening of the surface during use. |
| Chrome-free and fingerprint resistant(N5) | Surface treatment after the passivation process, in the process of lubrication, to prevent the operation of the fingerprint staining, to prevent the use of the surface of the process of premature blackening, and at the same time, the requirement to limit the fingerprint-resistant film harmful to the environment and human body, such as hexavalent chromium content |
| Oiled(O) | Surface treatment added after the passivation process to further reduce rusting during long-distance transport and long-term storage |
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