Regular Spangle Corrugated Galvanized Roofing Sheet 0.14–1.5mm with 800mm Effective Width for Sandwich Panel and Building Cladding

1. Product Overview

Regular spangle galvanized corrugated roofing sheet is widely used in industrial buildings, warehouses, workshops, and light steel structure projects where corrosion resistance, low self-weight, and fast installation are important. The corrugated profile improves stiffness compared with flat sheet, while the zinc coating helps protect the steel substrate during storage, transport, and outdoor service.

This specification covers 0.14–1.5 mm thickness with an 800 mm effective width, making it suitable for roof panels, wall sheets, and sandwich panel facings that require practical coverage and stable profile geometry.

2. Technical Solution

Product performance is based on:

• Hot dip galvanized coating for barrier protection and sacrificial protection
• Corrugated profile improving stiffness and drainage performance
• Regular spangle surface for standard galvanized appearance
• JIS G3302 substrate control for roofing and cladding applications
• Cut-to-length production for project-based installation

For roofing and sandwich panel use, zinc coating level affects corrosion resistance, while thickness affects rigidity, handling, and support span performance. Wave width and wave height also influence drainage and fixing behavior during installation.

3. Specifications

4. Application

• Roofing sheets for industrial and civil buildings
• Wall cladding for warehouses and workshops
• Sandwich panel facing sheets
• Steel structure housing panels
• Ceiling and enclosure sheet systems
• Light building exterior and interior decoration

5. Processing

• Hot dip galvanized base sheet preparation
• Corrugation roll forming
• Cut-to-length production
• Roof and wall overlap installation
• Fastener fixing on purlins or supports
• Panel matching for sandwich panel lamination systems

6. Advantages

• 0.14–1.5 mm thickness range covers light to medium roofing sheet requirements
• 800 mm effective width is suitable for standardized roof and wall layouts
• 30–275 g/m² zinc coating supports different service environments
• Regular spangle provides a conventional galvanized surface appearance
• Corrugated profile improves stiffness without excessive sheet weight
• Suitable for both single-sheet roofing and sandwich panel facing use

7. How to Choose

• Lightweight roof and wall applications → thinner gauges are commonly selected
• Higher rigidity or wider support spacing → thicker sheet is usually preferred
• More exposed outdoor environment → higher zinc coating such as Z180–Z275 is commonly selected
• Visible galvanized appearance → regular spangle is commonly acceptable
• Sandwich panel production → confirm effective width, cut length, and profile compatibility before order

8. FAQ

Q1: What is the difference between effective width and actual sheet width?
Effective width is the usable installed cover width after side overlap and profile forming are taken into account.

Q2: Is regular spangle suitable for corrugated roofing sheets?
Yes, regular spangle is widely used for standard galvanized roofing and wall sheets where a conventional metallic finish is acceptable.

Q3: Can this sheet be used for sandwich panels?
Yes, it can be used as the facing sheet for sandwich panel systems when the profile and width match the panel production line.

Q4: What zinc coating should be selected for outdoor roofing?
The suitable level depends on the service environment, but higher coating levels are generally preferred when longer outdoor corrosion resistance is required.

Q5: Can the sheet length be customized?
Yes, corrugated galvanized roofing sheets are commonly cut to project-based lengths within the processing range.