JIS SGCC / SGCH / G550 Corrugated Galvanized Roofing Sheet with 650–1050mm Effective Width and up to 3600mm Length

1. Product Overview

Corrugated galvanized roofing sheet is used for roof and wall systems where low self-weight, corrosion resistance, and fast installation are important. After hot dip galvanizing, the sheet is roll formed into a corrugated profile to improve stiffness compared with flat sheet.

This product covers common building-use thicknesses from 0.14 mm to 1.5 mm, with multiple effective widths for different project layouts. Grades such as SGCC, SGCH, and G550 are selected according to the required profile rigidity and installation condition.

2. Technical Solution

Product performance is based on:

• Hot dip galvanized coating for surface protection
• Corrugated profile for higher stiffness and drainage performance
• Multiple effective widths to match roof and wall coverage requirements
• SGCC for general sheet use, SGCH or G550 for higher hardness and profile retention
• Cut-to-length production for project-based installation

For roofing systems, coating mass affects corrosion resistance, while substrate grade and thickness affect profile stability, support span performance, and handling during installation.

3. Specifications

4. Application

• Industrial building roofing
• Warehouse and workshop wall panels
• Large-span steel structure enclosures
• Mobile house and light building panels
• Rolling shutter and light exterior sheet applications
• General building material projects

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
• Site trimming according to layout requirements

6. Advantages

• 0.14–1.5 mm thickness range covers common roof and wall sheet requirements
• 30–275 g/m² coating range supports different service environments
• Multiple effective widths improve layout flexibility and coverage efficiency
• SGCH and G550 options help improve profile rigidity in formed sheets
• Cut-length supply helps reduce site cutting and installation time
• Corrugated form improves drainage and panel stiffness without heavy sheet weight

7. How to Choose

• General roofing and wall cladding → SGCC is commonly selected
• Higher profile rigidity requirement → SGCH or G550 is usually preferred
• More exposed outdoor environment → higher zinc coating such as Z180–Z275 is commonly selected
• Project with fixed roof module → confirm effective width before production
• Longer panel demand → choose cut length according to roof slope, overlap, and transport limit

8. FAQ

Q1: What is the difference between SGCC, SGCH, and G550 for corrugated sheets?
SGCC is commonly used for general galvanized roofing sheets, while SGCH and G550 are selected when higher hardness and better profile retention are required.

Q2: Why is effective width different from the original sheet width?
Because part of the sheet width is used in the corrugated profile and side overlap during installation.

Q3: Can these sheets be used for both roof and wall applications?
Yes. They are widely used for roofing, wall cladding, and light enclosure systems.

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

Q5: Can the sheet length be customized for a project?
Yes. Corrugated galvanized sheets are commonly produced in project-based lengths within the available processing range.