Jingye Steel Successfully Develops High-End Bridge Steel Q370qE for Infrastructure Projects
May 12,2026
Jingye Steel has successfully developed and trial-produced Q370qE high-end bridge structural steel, a premium-grade material designed for major infrastructure projects such as high-speed railway bridges, long-span river-crossing bridges, and key transportation hubs.
This product fully meets national high-standard technical requirements for bridge steel in terms of mechanical properties, cleanliness, and microstructure stability.
Key Applications of Q370qE Bridge Steel
Q370qE is widely used in demanding infrastructure environments, including:
- High-speed railway bridge structures
- Large river-crossing and sea-crossing bridges
- Heavy-load transportation infrastructure projects
It is designed for long service life, high safety performance, and stable welding behavior under extreme working conditions.
Product Advantages
- Excellent low-temperature toughness
- High resistance to fatigue and cracking
- Stable weldability for engineering construction
- High steel purity and uniform microstructure
- Long-term durability for critical structures
These properties make Q370qE a core material for modern high-end bridge engineering.
Advanced Manufacturing Process Ensures Quality Stability
Jingye Steel ensures product performance through a fully integrated steelmaking process:
Converter → LF refining → RH vacuum refining → continuous casting
Key controls include:
- High-basicity slag smelting for impurity reduction
- Deep desulfurization (S ≤ 0.005%)
- Vacuum refining for improved steel cleanliness
- Strict temperature control during continuous casting (10–25°C superheat range)
All finished products undergo strict mechanical and structural testing to ensure full compliance with high-end bridge steel standards.
Customer Feedback and Performance Validation
After trial production and delivery, the product received positive feedback from customers, confirming its excellent performance in strength, toughness, and processing stability.
Strengthening Jingye Steel’s Infrastructure Steel Portfolio
The successful development of Q370qE further expands Jingye Steel’s high-end structural steel product range and reinforces its capabilities in supplying critical materials for global infrastructure projects.
Jingye Steel will continue focusing on high-performance steel development, customized solutions, and stable supply for global engineering and construction markets.
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