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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.
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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.
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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.
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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.
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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
28
2025
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11
The 40mm Revolution: Cutting Construction Costs with High-Strength Prestressed Composite Slabs
The Challenge: The Weight of Traditional Precast
In the competitive precast construction market, reducing dead weight is the fastest route to cutting costs. Traditional precast composite slabs typically have a bottom thickness of 60mm. While durable, this thickness results in significant weight, driving up transportation costs and requiring heavier on-site hoisting equipment.
The industry is urgently shifting towards the innovation of 40mm Ultra-Thin Prestressed Composite Slabs.
But how do engineers reduce concrete thickness by 33% without compromising structural integrity? As a specialized PC wire manufacturer, Tianjin Ruibaolong provides the essential material answer.
The Engineering Enabler: 3x Strength of Rebar
The secret to achieving a thinner 40mm profile lies in replacing standard HRB400 hot-rolled rebar with High-Strength Spiral Ribbed PC Wire (Grade 1570 MPa).
According to engineering data at RBL Steel Wire labs, our φH5mm and φH7mm PC wire offers roughly 3 times the tensile strength of standard rebar. This superior strength-to-weight ratio allows structural engineers to significantly reduce the required volume of concrete and steel while maintaining high load-bearing capacity and stiffness.
3 Major Economic Benefits for Your Project
By specifying RBL’s high-strength wire to enable 40mm slab designs, precast factories and contractors unlock significant savings:
1. Optimized Logistics
Reducing slab thickness to 40mm cuts dead weight by approximately 40%. This allows you to load significantly more square meters per truck, drastically slashing shipping fees from the factory to the job site.
2. Faster, Safer Installation
Lighter panels reduce the burden on tower cranes and hoisting machinery, speeding up on-site assembly cycles and improving safety.
3. Reduced On-Site Shoring (Props)
Due to the high stiffness provided by our prestressed wire in combination with truss designs, temporary on-site shoring can be significantly reduced. This saves labor costs and clears workspace for follow-on trades.
Why Choose RBL Spiral Ribbed Wire for Thin Slabs?
In thin 40mm sections, concrete cover is minimal, making "grip" essential to prevent cracking and ensure stress transfer.
Smooth or indented wires may risk slippage in these demanding applications. Tianjin Ruibaolong’s Spiral Ribbed Wire features precision-engineered 3-sided or 4-sided continuous ribs. This profile provides superior mechanical bonding with the concrete, ensuring effective crack control and structural performance even in ultra-thin slabs.
Conclusion
Lighter, stronger, and cheaper to transport and install. The future of precast flooring is thin, and it starts with specifying the right high-strength steel wire.
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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
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