High-Strength 1x7 pc steel strand 12.7mm Grade 1860 for Prestressed Concrete Structures
Engineered for durability and performance, this 1x7 uncoated steel strand with a diameter of 12.7 mm is designed to meet the rigorous demands of modern infrastructure projects worldwide. With a tensile strength of up to 1860 MPa (270 ksi), it's ideal for pre-tensioned and post-tensioned prestressed concrete applications across bridges, highways, industrial buildings, and more. Manufactured in compliance with ASTM A416/A416M standards, each coil delivers consistent mechanical properties, ensuring structural integrity and long-term reliability.
This high-performance prestressing tendon combines low relaxation characteristics with superior straightness and uniformity—critical factors for minimizing stress losses over time. The seven-wire construction provides excellent load distribution, while the optimized wire geometry ensures efficient anchorage and minimal elongation under tension. Available in both standard grade 1725 (250) and premium grade 1860 (270), users can select based on project-specific requirements such as environmental exposure, design life, or seismic resilience.
Key technical specifications include a minimum breaking force of 183.7 kN (41,300 lbf), a steel area of 98.7 mm² (0.153 in²), and a mass of 775 kg per 1000 meters. At 1% extension, the strand exhibits a minimum load capacity of 165.3 kN (37,170 lbf)—ideal for maintaining tension in critical structural elements like bridge girders, crane beams, and rock anchors. Its precision manufacturing process guarantees a tight tolerance in diameter and uniform wire spacing, with a minimum difference between center and outer wire diameters of 0.076 mm (0.003 in).
Designed for global use, this PC Strand supports diverse construction environments—from coastal regions requiring corrosion-resistant materials to high-traffic transportation corridors demanding long-term stability. It’s commonly used in railway and highway bridges, multi-story commercial structures, mining support systems, stadiums, and geotechnical engineering projects where controlled deformation and high tensile capacity are essential.
Manufactured by Chunpeng Group, a trusted manufacturer with over three decades of experience in prestressed concrete solutions, these strands benefit from stable raw material sourcing from top-tier suppliers such as Shougang and Tianjin Iron. Advanced vapor corrosion inhibitors and triple-layer protective packaging ensure safe transit and storage, even in humid or marine conditions. Each coil is carefully wrapped and secured on wooden pallets for containerized shipping, with a maximum weight of 3,500 kg per unit and compatibility with 20-foot containers carrying 20,000–25,000 kg per shipment.
Users consistently praise its ease of installation, predictable behavior under load, and compatibility with modern anchoring systems. Whether you're specifying materials for a new bridge deck or reinforcing an existing structure, this 12.7 mm PC strand offers a balance of strength, flexibility, and cost-efficiency that aligns with international best practices in civil engineering.
For inquiries, please specify the required strand diameter, grade (e.g., 1860 MPa), type (uncoated, galvanized, bonded, or unbonded), quantity, and applicable ASTM revision year to ensure precise product matching and timely delivery.
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