Knowledge Sharing

The technical requirements for light steel keel typically include the following aspects: - **Double-sided Galvanized Quantity**: Reflects the keel's rust prevention capability, generally categorized according to the GB/T 11981 standard into first-grade (≥150g/m²), second-grade (≥120g/m²), third-grade (≥100g/m²), and qualified grade (≥80g/m²).

### 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.

Light steel keel has the following advantages: 1. **Lightweight**: Made from lightweight steel, it weighs only 3-4 kg/㎡. When used with 9 mm thick plasterboard for ceiling installation, its self-weight is only a quarter of the weight of a plastered ceiling. Partitions made with it are also relatively light, such as a 5 kg/㎡ partition, which is only 1/10 the weight of a half-brick wall, facilitating transportation and construction.

**I. Process Flow** 1. **Wall Position Laying Out** Before installing the light steel keel, the partition wall position should be determined according to the design drawings, and the line should be snapped on the floor and extended to the ceiling and side walls.