Evolution & Advancements in Light Steel Keel Development: Shaping the Future of Construction

### Overview of Light Steel Keel Development:

- **International Development**: Originated from the North American wooden structure housing system, gradually replacing wood with steel, forming mature technology and applications.

- **Domestic Development**: Widely used in various construction sites, such as hotels, shopping malls, office buildings, etc., with the advantages of being lightweight, high-strength, and seismic-resistant.

### Development History of Light Steel Keel:

- **Origin**: In the 1930s, the United States began researching cold-formed thin-walled steel structures.

- **North America**: The U.S. and Canada have formed mature production and design systems.

- **China**: Since 1978, it has introduced and developed light steel keel systems.

- **Europe**: Since the 1970s, many countries have started researching and developing cold-formed steel members.

- **Asia**: Japan increased R&D efforts in the 1990s, forming national standards.

### Advantages of Light Steel Keel:

- Lightweight, high-strength, fire-resistant, and efficient construction.

- Structurally reliable and safe, with good impact resistance.

- Good seismic performance, improves insulation and soundproofing effects.

- High resource efficiency, galvanized and corrosion-resistant, recyclable.

- Energy-saving, versatile, adaptable, and stable.

### Application Scenarios for Light Steel Keel:

- Residential construction, commercial construction, industrial construction, special structures, and building materials manufacturing industry.

### Technical Requirements:

- Double-sided galvanized quantity, galvanized layer thickness, flatness, impact resistance, static load test, material specifications, etc.

### Construction Process:

1. **Construction Preparation**: Prepare materials and accessories, measure the construction area.

2. **Positioning and Laying Out**: Mark the position of the keel on the ceiling or wall.

3. **Installing Hangers and Main Keel**: Maintain parallelism and stagger the joints.

4. **Installing Secondary Keel**: Connect with the main keel and adjust the spacing.

5. **Leveling the Keel**: Use tools to ensure flatness.

6. **Installing Lining Panels**: Such as plasterboard, pay attention to splicing and fixing.

7. **Post-construction Treatment**: Inspect and handle panel seams and nail holes.

### Usage Method for Partition Light Steel Keel:

- Similar to the ceiling construction process, including construction preparation, positioning and laying out, and installing keel, etc.

### Export Situation:

- In recent years, the export of light steel keel has shown an increasing trend, especially under the impetus of the "Belt and Road" policy.

### International Demand:

- Light steel keel is widely used in developed countries, and the demand growth in developing countries provides market opportunities.

### Construction Highlights and Quality Inspection:

- Detailed description of precautions during construction and quality inspection standards.

### Summary:

Light steel keel, as an efficient building material, has been widely used and rapidly developed worldwide. Its characteristics such as being lightweight, high-strength, and easy to construct meet the diverse needs of the modern construction industry. With technological advancements and market expansion, the prospects for the development of light steel keel are broad.