As an experienced supplier of unbonded PC steel strands, Tianjin Huayongxin Prestressed Steel Wire Co., Ltd is committed to technological innovation and strict quality assurance. We provide high-performance, reliable prestressed solutions that meet the demanding requirements of global engineering and construction projects.
Through advanced structural design and rigorous production processes, our products ensure safety, efficiency, and long-term durability across a wide range of applications.
Structural Design of Unbonded PC Strand
Our unbonded PC strands feature a three-layer protective composite structure, designed to maximize performance, durability, and ease of installation:
High-Strength Steel Core – Made from 1860 MPa grade low-relaxation, high-carbon steel wire, available in multiple diameters (e.g., 12.7 mm, 15.2 mm). This ensures superior load-bearing capacity and excellent fatigue resistance.
Special Anti-Corrosion Grease – Proprietary high-performance lubricating grease reduces friction by 30%, effectively minimizing tension loss and extending the lifespan of the steel wire.
HDPE Protective Sheath – Crafted from imported high-density polyethylene (HDPE) and applied through a patented seamless coating process. This sheath provides outstanding weather and wear resistance, exceeding industry standards.
Guarantee of Production Process
Our factory leverages advanced technology and comprehensive quality control to ensure every meter of PC strand meets the highest performance standards:
Automated Cold Drawing and Stranding – Using German-imported equipment, steel wires are precisely processed and stably stranded, effectively eliminating internal stress.
Featured content:Online Detection System – Real-time monitoring of grease thickness, sheath uniformity, and mechanical parameters ensures a defective rate below 0.1%.
Customized Production – We accommodate personalized orders, offering tailored strength grades, diameter specifications, and corrosion protection to meet specific project requirements.
Core Advantages of Unbonded PC Strand
| Advantage | Performance |
|---|---|
| Ultra-Long Life | Double-layer protection design provides a theoretical service life of over 50 years, significantly reducing maintenance costs throughout the structure’s lifespan. |
| Efficient Construction | No grouting required; easy threading of reinforcement. Efficiency for complex curved reinforcements increases by 40%, shortening the overall construction period. |
| Safe and Reliable | Supports tensioning and stress monitoring, demonstrates excellent seismic performance, and has passed national-level anti-fatigue tests. |
| Customization | Offers anchor equipment, technical construction guidance, and comprehensive after-sales support, ensuring a worry-free prestressed system throughout the project. |
Application Fields Demonstrating Strength
Our unbonded PC strands have earned the trust of numerous clients and fostered long-term partnerships. Key application areas include:
Super High-Rise Buildings – Supporting 300-meter+ skyscrapers to achieve large-span spatial structures.
Cross-Sea Bridges – Serving as the core material for cable-stayed bridges, ensuring excellent wind and earthquake resistance.
Energy Infrastructure – The preferred solution for critical components such as nuclear power plant containment structures and LNG storage tanks.
Renovation and Reinforcement of Existing Buildings – Utilizing external prestressing technology to efficiently enhance the load-bearing capacity of older structures.
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