1. Application cognition and preliminary substitution

Early steel structure buildings, especially portal frame lightweight houses, mainly used C-shaped steel purlins. With the increasing demand for large-span, multi span factories and complex roofs, engineers have recognized the huge economic advantages of Z-shaped steel in continuous purlin systems and have gradually begun to promote it.

2. Material upgrade drives performance leap

The development of Z-shaped steel is closely related to the development of galvanized steel strips, especially high-strength steel and zinc aluminum magnesium coatings.

Application of high-strength steel: Using Q345, Q420 or even higher strength galvanized steel strips as raw materials, Z-shaped steel can significantly improve its load-bearing capacity while reducing its thickness, achieving the unity of lightweight and high strengthening.

The popularization of high-quality zinc coating: from ordinary galvanizing to aluminum zinc plating, and now the rapid penetration of zinc aluminum magnesium coating, the revolutionary improvement of substrate corrosion resistance has greatly extended the service life of Z-shaped steel (especially roof purlins) in humid environments and reduced maintenance costs.

3. Design optimization and product segmentation

Section optimization design: Through computer-aided design and finite element analysis, optimize the edge angle, flange width, and web height of Z-shaped steel, and pursue ultimate bearing capacity under the same amount of steel used.

Product serialization and customization: Form multiple standard height series from Z100 to Z350, and customize non-standard cross-sections and opening positions according to specific project requirements (such as "waist waist" Z-shaped steel used for crossing pipelines).

4. Intelligent Manufacturing and System Integration (Current and Future)

Intelligent production line: adopting servo drive, online real-time detection and feedback control system to achieve high precision, high speed and low loss in production. One click specification change, quick response to small batch customized orders.

Integration with Building Information Modeling: The size, position, and connection information of Z-shaped steel can be directly integrated into the BIM model, achieving full process digital management from design, production to installation.