-
ProductsDiscover Ruibaolong's full range of High-Performance PC Steel Wire, PC Steel Bar, and Cold Drawn Wire. We specialize in SWRH82B Spiral Ribbed, Plain, and Indented surfaces, as well as Hose Reinforcement Wire. ISO 9001 certified manufacturer for PCCP and infrastructure projects.
-
About UsTianjin Ruibaolong Prestressed Steel Strand Co., Ltd. is a leading ISO 9001 certified manufacturer established in 2010. We specialize in producing and exporting high-quality PC wire and steel bars globally.
-
Classic CasesBrowse our portfolio of successful infrastructure projects. From domestic water diversion systems to international railway construction, see how Ruibaolong steel wire powers global engineering.
-
BlogAbout Ruibaolong We are a professional metal products manufacturer dedicated to High-Performance PC Steel Wire. With a strong market network covering China and an expanding global footprint, we supply essential materials for bridges, buildings, and infrastructure. Here, we share our journey in connecting the world with strength and durability.
-
Contact UsGet in touch with Ruibaolong for factory-direct quotes on PC Wire and Steel Bars. Located in Tianjin, China. Contact our export team today for technical support and pricing.
NEWS CENTER
Blog
29
2025
-
11
Fire Resistance of Prestressed Concrete: Why High-Carbon PC Wire is Critical for Safety
This article examines the critical behavior of prestressed concrete structures under extreme thermal stress. Citing recent research on elastic modulus retention, we analyze why High-Carbon PC Wire outperforms other materials by maintaining superior stiffness even at 600°C. The discussion highlights the importance of selecting SWRH82B-grade steel to minimize structural deformation and ensure safety in high-risk projects like tunnels and high-rise buildings.
In modern construction, ensuring structural integrity under normal load conditions is not enough. Engineers must consider extreme scenarios, specifically fire resistance.
When a building or tunnel catches fire, the internal temperature can rise rapidly. If the steel reinforcement loses strength and stiffness (elastic modulus) too quickly, it can lead to excessive deformation and potentially catastrophic structural collapse.
Selecting the right prestressing material is a matter of life and safety.
The Science: Elastic Modulus at 600°C
Recent studies on the fire limit of prestressed concrete have highlighted a crucial fact: Prestressed Steel Wire performs exceptionally well regarding stiffness retention compared to other reinforcement materials.
Data indicates that high-carbon steel wire maintains a critical level of rigidity even under extreme thermal stress.
Key Research Finding:
Even when the temperature reaches 600°C, the stiffness loss of high-quality PC wire is limited to approximately 59.26%.
What this means for your project: While other materials might become too "soft" to support the load at these temperatures,
💡 Ruibaolong Insight: Material Purity = Thermal Stability
Why does some steel fail faster than others in heat? The answer often lies in the chemical composition.
At Tianjin Ruibaolong, our manufacturing process focuses on the precise composition of SWRH82B high-carbon steel. By controlling impurities and optimizing the carbon content, our
Spiral Ribbed PC Wires (φ5mm / φ7mm) not only meet standard strength requirements (1570/1860 MPa) but also offer more predictable performance curves under thermal stress compared to lower-grade steels.
Conclusion
For projects requiring high fire safety ratings—such as underground tunnels, industrial plants, and high-rise residential buildings—the choice of reinforcement is critical.
Don't compromise on safety. Choose prestressing steel that is engineered to stand the heat.
Call to Action
Designing a fire-safe structure?
👉
Fire resistant concrete reinforcement,High-carbon PC wire,Tunnel fire safety
Scan
Follow Us
Contact Us
CONTACT US
Tianjin Ruibaolong Prestressed Steel Strand Co., Ltd. is one of the professional manufacturers specializing in the research, development, production, and operation of prestressed steel wires, cold-drawn steel wires, and steel wires for roll welding machines.
Address: No. 3, Tianyu Road, Tianyu Science and Technology Park, Jinghai District, Tianjin
Email: globaltrade@rblprestress.com
Social Media
SOCIAL MEDIA
Exclusive Customization Welcome to Consult
FEEDBACK
We will contact you within one business day. Please pay attention to your email.
Copyright © 2025 Tianjin Ruibaolong Prestressed Steel Strand Co., Ltd.