Chromated HDG Steel Coil with 508 / 610mm Coil ID and 270–500 MPa Tensile

Product Specification

Chromated HDG Steel Coil with 508 / 610mm Coil ID and 270–500 MPa Tensile Strength for Industrial Processing

1. Product Overview

Hot dipped galvanized steel coil is supplied for industrial processing where corrosion resistance, stable strength, and equipment compatibility are required. The zinc coating protects the steel surface during storage, transport, and service, while the standard coil IDs of 508 mm and 610 mm match common decoiling and slitting equipment used in fabrication plants.

For buyers concerned with downstream handling, chromated surface treatment is often selected to improve temporary corrosion resistance and maintain a cleaner surface during storage and processing. This makes the product suitable for sheet production, panel fabrication, electrical enclosures, HVAC components, and general industrial parts.

2. Technical Solution

Product performance is based on the following technical characteristics:

• Continuous hot-dip galvanizing with controlled zinc coating weight
• Zinc layer providing barrier protection and sacrificial protection
• Chromated surface treatment improving storage stability and handling condition
• Standard coil ID for compatibility with mainstream industrial lines
• Balanced yield strength, tensile strength, and elongation for forming and fabrication

Yield strength of 195–420 MPa supports dimensional stability and structural performance. Tensile strength of 270–500 MPa helps the material resist deformation during fabrication, while elongation of 12–25% supports bending, stamping, and profiling operations.

3. Specifications

4. Application

• Industrial sheet metal fabrication
• Electrical cabinets and control boxes
• HVAC ducts and ventilation components
• Appliance panels and housings
• Roofing and wall cladding systems
• General formed steel parts and enclosures

5. Processing

• Slitting into narrow strips
• Cut-to-length sheet production
• Roll forming and bending
• Stamping and profiling
• Recoiling and secondary handling
• Surface coating or painting

6. Advantages

• Chromated surface is suitable for storage and transport before processing
• 508 mm and 610 mm coil IDs fit standard industrial processing equipment
• Z60–Z275 coating range covers different corrosion environments
• Balanced mechanical properties support fabrication and structural use
• 1000–1250 mm width matches mainstream production lines
• Seaworthy packing helps reduce transport damage risk

7. How to Choose

• For longer storage or export shipment → chromated surface is commonly selected
• For outdoor or humid environment → higher coating such as Z200–Z275 is preferred
• For forming-intensive parts → prioritize elongation around or above 18%
• For structural or reinforcement parts → select higher yield strength grade
• For production line compatibility → confirm coil ID, coil weight, and width with equipment capacity

8. FAQ

Q1: What is the function of chromated surface treatment?
It helps improve temporary corrosion resistance and keeps the surface more stable during storage and transport.

Q2: Why are 508 mm and 610 mm coil IDs commonly used?
These are standard coil sizes compatible with most industrial decoiling, slitting, and forming equipment.

Q3: Can this coil be processed into sheets and strips?
Yes, it is commonly slit or cut to length for downstream fabrication.

Q4: What coating level is suitable for outdoor applications?
Higher coating levels such as Z200–Z275 are typically selected for better corrosion resistance.

Q5: Is this material suitable for bending and stamping?
Yes, elongation of 12–25% supports common forming operations including bending, stamping, and roll forming.