0.4mm Regular Spangle Hot Dipped Galvanized Steel Coil with 1250mm Width for Roofing and Heat Exchanger Components

1. Product Overview

Hot dipped galvanized steel coil is used in roofing and light fabricated components where corrosion resistance, dimensional stability, and forming compatibility are required. A 0.4 mm gauge is commonly selected for lightweight panel processing, while 1250 mm width is suitable for cut-to-length sheets and standard roll forming lines.

For this type of product, regular spangle surface is often acceptable in general construction and industrial sheet applications. The hot-dip zinc coating helps protect the steel surface from oxidation and moisture exposure during storage, transport, and service.

2. Technical Solution

Product performance is based on the following technical characteristics:

• Continuous hot dip galvanizing with controlled zinc coating mass
• Zinc layer providing barrier protection and sacrificial protection
• 0.4 mm thickness suitable for light profile and sheet processing
• 1250 mm width matching common roofing and panel production lines
• Regular spangle surface supporting standard galvanized appearance

For roofing and heat-related fabricated components, coating stability and forming behavior are both important. The combination of yield strength, tensile strength, and elongation helps the material maintain shape during bending, profiling, and assembly.

3. Specifications

4. Application

• Roofing sheets and roof components
• Wall and cladding panels
• Heat exchanger covers and fabricated sheet parts
• Garage and shutter panels
• Appliance and industrial enclosures
• General light-gauge sheet metal fabrication

5. Processing

• Cut-to-length sheet production
• Slitting into narrow strips
• Roll forming for roofing profiles
• Bending and profiling
• Punching and edge forming
• Surface painting or further coating if required

6. Advantages

• 0.4 mm gauge is suitable for lightweight sheet and profile fabrication
• 1250 mm width fits common roofing and panel processing lines
• Regular spangle provides a standard galvanized appearance
• Hot dip zinc coating improves corrosion resistance in service
• Chromated, oiled, and anti-finger options support storage and downstream use
• Standard coil dimensions improve compatibility with industrial processing equipment

7. How to Choose

• Roofing and visible galvanized panels → regular spangle is commonly selected
• Longer storage before processing → chromated or oiled surface is often preferred
• Further painting or cleaner handling → anti-finger surface can be considered
• Outdoor construction use → select coating level according to corrosion requirement
• Continuous roll forming → confirm 1250 mm width and 508 mm coil ID with equipment capacity

8. FAQ

Q1: Is 0.4 mm galvanized coil suitable for roofing sheets?
Yes, 0.4 mm is commonly used for lightweight roofing and cladding panel fabrication.

Q2: What is the advantage of regular spangle surface?
Regular spangle provides a traditional galvanized appearance and is widely used in standard construction sheet applications.

Q3: Can this coil be processed into sheets or strips?
Yes, it can be cut to length into sheets or slit into narrower strips according to downstream requirements.

Q4: Which surface treatment is suitable for storage and transport?
Chromated or oiled surface is commonly selected to improve temporary corrosion resistance during storage and shipping.

Q5: Is this product suitable for heat exchanger related sheet fabrication?
Yes, it can be used for light fabricated parts and covers where galvanized sheet with stable forming performance is required.