Z275 Galvanized Coil
The galvanized steel coil Z275 is a double-sided galvanized carbon steel sheet. This is produced by a metal coating process that passes cold rolled coils through a bath filled with molten zinc. This continuous hot-dip plating or also known as electro-galvanizing is the main process that these carbon steel sheets must go through to produce coils and galvanized sheets. The process consists of applying zinc by electrolytic treatment. After the sheet is subjected to this treatment, a layer of zinc is adhered to the base metal through the iron and zinc bonding layer.
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Z275 Galvanized Coil
PRODUCT DETAILS
Z275 Galvanized Coil Description
The galvanized steel coil Z275 is a double-sided galvanized carbon steel sheet. This is produced by a metal coating process that passes cold rolled coils through a bath filled with molten zinc. This continuous hot-dip plating or also known as electro-galvanizing is the main process that these carbon steel sheets must go through to produce coils and galvanized sheets. The process consists of applying zinc by electrolytic treatment. After the sheet is subjected to this treatment, a layer of zinc is adhered to the base metal through the iron and zinc bonding layer.
Galvanizing is a well-known and effective method to add a protective layer to prevent the exposed steel from being corroded by natural elements. Zinc not only acts as a barrier between the environment and the steel, but it also decomposes first to protect the underlying steel and extend its service life.
Scope of Application
Galvanizing products are widely used in industry, agriculture, animal husbandry and fishery, energy, transportation, chemical industry, light industry, home appliances, construction, communications, national defense and other fields.
Product Parameters
| Product Name | Z275 Galvanized Coil |
| Thickness | 0.12mm-3.5mm |
| Width | 600mm-1500mm |
| Length | 508mm/610mm, Support Customization |
| Standard | AISI, ASTM, DIN, JIS, GB, JIS, SUS, EN, etc. |
| Zinc Layer | Hot Galvanizing: 60-275g/m² |
| Pre-galvanized: 80-275g/m² |
Chemical Composition
Standard | Grade | C | Si | Mn | P | S | Ti |
Forcold Forming Chinese Standard | DX51D+Z | 0.12 | 0.50 | 0.60 | 0.100 | 0.045 | 0.30 |
DX52D+Z | 0.12 | 0.50 | 0.60 | 0.100 | 0.045 | 0.30 | |
DX53D+Z | 0.12 | 0.50 | 0.60 | 0.100 | 0.045 | 0.30 | |
DX54D+Z | 0.12 | 0.50 | 0.60 | 0.100 | 0.045 | 0.30 | |
DX56D+Z | 0.12 | 0.50 | 0.60 | 0.100 | 0.045 | 0.30 | |
DX57D+Z | 0.12 | 0.50 | 0.60 | 0.100 | 0.045 | 0.30 | |
Forcold Forming Japanese Standard | SGCC | 0.15 | 0.50 | 0.80 | 0.050 | 0.030 | 0.025 |
SGCD1 | 0.12 | 0.50 | 0.60 | 0.040 | 0.030 | 0.025 | |
SGCD3 | 0.08 | 0.50 | 0.45 | 0.030 | 0.030 | 0.025 | |
SGCD4 | 0.06 | 0.50 | 0.45 | 0.030 | 0.030 | 0.025 | |
For Structure Japanese Standard | SGC340 | 0.25 | 0.50 | 1.70 | 0.200 | 0.035 | 0.025 |
SGC400 | 0.25 | 0.50 | 1.70 | 0.200 | 0.035 | 0.150 | |
SGC490 | 0.30 | 0.50 | 2.00 | 0.200 | 0.035 | 0.025 | |
SGC510 | 0.30 | 0.50 | 2.50 | 0.200 | 0.035 | 0.025 | |
For Structure AISI Standard | S220GD+Z | 0.20 | 0.60 | 0.70 | 0.100 | 0.045 | 0.025 |
S250GD+Z | 0.20 | 0.60 | 0.70 | 0.100 | 0.045 | 0.025 | |
S280GD+Z | 0.20 | 0.60 | 0.70 | 0.100 | 0.045 | 0.025 | |
S320GD+Z | 0.20 | 0.60 | 0.70 | 0.100 | 0.045 | 0.025 | |
S350GD+Z | 0.20 | 0.60 | 0.70 | 0.100 | 0.045 | 0.150 | |
S550GD+Z | 0.20 | 0.60 | 0.70 | 0.100 | 0.045 | 0.150 |
Mechanical Properties
Grade | Yield Strength MPa≥ | Tensile Strength MPa≥ | Elongation A%≥ |
DX51D Z/ZM/AZ/AM | 240-380 | 270-500 | 22 |
DX52D Z/ZM/AZ/AM | 140-300 | 270-420 | 26 |
DX53D Z/ZM/AZ/AM | 140-260 | 270-380 | 30 |
DX54D Z/ZM/AZ/AM | 120-220 | 260-350 | 36 |
S220GD Z/ZM/AM | 220 | 300 | 20 |
S250GD Z/ZM/AZ/AM | 250 | 330 | 19 |
S280GD Z/ZM/AM | 280 | 360 | 18 |
S300GD A/AM | 300 | 380 | 18 |
S320GD Z/ZM/AM | 320 | 390 | 17 |
S350GD Z/ZM/AZ/AM | 350 | 420 | 16 |
S450GD A/AM | 450 | 480 | 15 |
S550GD Z/ZM/AZ/AM | 550 | 550 | - |
Galvanized Surface Selection
Zero Spangle | Minimized Spangle | Normal Spangle | Large Spangle |
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Use of The Environment | Recommended Zinc Thickness |
Indoor Use | Z10 or Z12 (100g/㎡or 120g/㎡) |
Suburbs | Z20 and Painting (200g/㎡) |
Urban or Industrial Area | Z27 (270g/㎡) or G90 (US Standard) and painted |
Coastal Area | Thicker than Z27 (270g/㎡) or G90 (US Standard) and painted |
Punch or Deep Drawing Application | Thicker than Z27 (270grams/㎡) or G90 (US Standard) avoid coating peeling after stamping |
Surface Treatment Type | Code | Features |
Chromic Acid Treatment | C | Good corrosion resistance, suitable for bare state |
Chromic Acid Treatment+Oiling | S | Good corrosion resistance |
Phosphoric Acid Treatment (Including Sealing Treatment) | P | Have a certain corrosion resistance, good paint performance |
Phosphoric Acid Treatment (Including Sealing Treatment)+Oiling | Q | Has a certain corrosion resistance, good paint performance, prevent rust during transportation and storage |
Phosphoric Acid Treatment (Excluding Sealing Treatment) | T | Have a certain corrosion resistance, good paint performance |
Phosphoric Acid Treatment (Excluding Sealing Treatment)+Oiling | V | Has a certain corrosion resistance, good paint performance, and prevent rust |
Oiling | O | Prevent rust during transportation and storage |
No Treatment | M | Suitable for immediate painting |
Material Comparison
Chinese Standard | Japan Standard | European Standard |
DX51D Z/DC51D Z (CR) | SGCC | DX51D Z |
DX52D Z/DC52D Z | SGCD1 | DX52D With |
DX53D Z/DC53D Z/DX54D Z/DC54D Z | SGCD2/SGCD3 | DX53D Z/DX54D Z |
S220/250/280/320/350/550GD Z | SGC340/400/440/490/570 | S220/250/280/320/350GD Z |
DX51D Z/DD51D Z (HR) | SGHC | DX51D Z |
FACTORY APPEARANCE
Whether it is carbon steel, stainless steel, galvanized, color-coated or profiles, we have in-depth research and rich practical experience. Each product embodies our efforts and wisdom to ensure that we provide customers with the highest quality and most reliable steel products.
PACKING AND DELIVERY
We can provide,
wooden pallet packaging,
Wooden packing,
Steel strapping packaging,
Plastic packaging and other packaging methods.
We are willing to package and ship products according to the weight, specifications, materials, economic costs and customer requirements.
We can provide container or bulk transportation, road, rail or inland waterway and other land transportation methods for export. Of course, if there are special requirements, we can also use air transportation

CUSTOMER FEEDBACK
We strictly control product quality to ensure that every ton of steel meets national standards and provide customers with high-quality products. At the same time, we pay attention to after-sales service and always provide customers with thoughtful services, which has won the trust and praise of customers. We serve global customers with a global vision.
WHY CHOOSE TAIHANG STEEL
For the steel industry, customers value quality and after-sales service the most. We always adhere to high standards and strict requirements and are committed to becoming your preferred partner.
Quality Assurance
We are well aware that quality is the lifeline of the steel industry. Therefore, we adhere to strict quality control processes to ensure that each batch of steel products meets national standards and provides solid protection for your projects.
Industry Experience
With many years of industry experience, we have a deep understanding of market demand and can provide customized products and services according to customer needs to ensure that your business is fully supported.
Professional Team
We have a professional team with rich technical knowledge and practical experience. No matter what problems we encounter, we can respond quickly and provide effective solutions.
After-sales Service
We value the feedback of every customer and provide a full range of after-sales services to ensure that you have no worries during the cooperation process.
PRODUCT MEASUREMENTS
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APPLICATION AREAS
Automotive
Shipbuilding
Building Manufacturing
Machine Manufacturing
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