9.53mm Low Relaxation Prestressed Steel Strand – High-Strength, Corrosion-Resistant Solution for Modern Construction
Engineered for durability and performance in demanding structural applications, the 9.53mm low relaxation prestressed steel strand is a premium-grade material widely adopted in modern civil engineering projects. Manufactured from high-carbon steel wire rods through cold drawing, twisting, and stress-relaxation stabilization processes, this strand delivers exceptional tensile strength up to 1860MPa and a breaking load exceeding 130kN. With a cross-sectional area of approximately 70.7mm² and a precise diameter of 9.53mm, it meets international standards for pre-tensioned concrete systems, offering reliable long-term load-bearing capacity and minimal stress loss over time.
One of its standout features is its low relaxation rate—no more than 2.5% after holding 70% of nominal tensile stress for 1000 hours at 20°C. This ensures that prestress remains stable throughout the service life of bridges, buildings, and anchoring systems, reducing maintenance needs and enhancing structural integrity. The strand’s flexibility allows for easy handling during installation, making bundling, threading, and bending operations efficient on-site without compromising mechanical properties.
Available in multiple protective finishes such as galvanizing or epoxy coating, this steel strand offers enhanced resistance to environmental degradation, particularly in humid, marine, or aggressive chemical environments. These surface treatments not only extend service life but also improve aesthetic consistency across infrastructure components like water reservoirs, retaining walls, and foundation anchors. Standard packaging in coils (ranging from 2 to 3.5 tons per coil) facilitates logistics, storage, and on-site deployment, aligning with global construction efficiency goals.
Chunpeng Group, a trusted manufacturer with over three decades of expertise in prestressed concrete materials, produces this product under strict quality control protocols. Their comprehensive portfolio includes ultra-high tensile strength strands, Normal Tensile Strength variants, unbonded options, weather-resistant models, and PC steel wires—all designed to meet diverse project requirements worldwide. Beyond strands, they supply anchorage systems and photovoltaic mounting solutions tailored for sustainable and resilient infrastructure development.
Commonly used in small-to-medium span bridges, multi-story residential and commercial buildings, soil nailing systems, and hydraulic structures such as dams and reservoirs, this steel strand supports both new builds and retrofitting initiatives where strength, longevity, and corrosion resilience are paramount. Its adaptability makes it ideal for regions with fluctuating temperatures and exposure to moisture or saline conditions.
Users consistently report improved structural performance, reduced deflection, and lower long-term maintenance costs when integrating this strand into prestressed concrete elements. Whether applied in urban transit systems, coastal developments, or large-scale industrial facilities, it has proven effective in delivering consistent results across various climates and terrains.
For engineers and contractors seeking a balance between cost-effectiveness and technical excellence, the 9.53mm low relaxation prestressed steel strand stands out as an optimal choice. It supports innovation in green building practices while ensuring safety, compliance, and scalability in today’s complex construction landscape.
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