What Are the Advantages of Prestressed Smooth Steel Wire?

Our prestressed smooth steel wire is made from SWRH82B high-carbon steel wire rod. It undergoes a pickling-free process and undergoes multiple precision cold-drawing passes. Our production standards far exceed industry standards. With its multiple advantages in performance, adaptability, and affordability, it has become the preferred material for various engineering projects. Its core advantages lie in its mechanical properties, engineering suitability, and cost-effectiveness:

I. Excellent Mechanical Properties

Our prestressed smooth steel wire utilizes high-quality raw materials and advanced processing to achieve a stable and reliable mechanical performance system, laying the core foundation for project safety.

- High Strength and Uniformity: Made from high-carbon steel with a carbon content of 0.6% to 0.9%, this wire undergoes a cold work hardening process (reducing cross-sectional area by 50% to 85%) to achieve a significant increase in strength. Common tensile strengths reach 1570 MPa, 1670 MPa, and 1770 MPa, with high-end products reaching 2200-2300 MPa. The 2000 MPa grade offers a single wire bearing capacity of 15 tons, significantly reducing the amount of steel used in structural components. For example, in bridge construction, beam cross-sections can be reduced by 10%-15%.

- Low Relaxation and Fatigue Resistance: Through straightening and tempering at 350-400°C to eliminate cold-drawing residual stresses, stress-relieved steel wire achieves a relaxation rate of ≤2.5% after 1000 hours, which is only 25%-33% of that of ordinary cold-drawn steel wire. Deformation under long-term loads is minimal. After optimization using nanocomposite technology, fatigue resistance is further improved by 30%, making it suitable for long-term load-bearing scenarios such as high-speed rail bridges and high-rise buildings.

- Excellent ductility and stability: Elongation after fracture is ≥3.5% (L0=200mm), and it can achieve a 180° bend without cracks (D=3d), effectively avoiding the risk of brittle fracture during construction or service. Stabilization treatment also improves yield strength and plasticity, further ensuring stable structural performance.

II. Strong Engineering Adaptability

From process adaptation to cross-domain applications, our prestressed smooth steel wire offers high adaptability to meet diverse engineering needs, far exceeding the scope of similar products.

- Flexible Process and Anchor Compatibility: While smooth steel wire's grip is weaker than notched wire, it can be used with clip-on (YM-type) and swaged anchors, making it perfectly compatible with mainstream processes such as post-tensioning (e.g., bridge beams) and pre-tensioning (e.g., precast floor slabs). It is particularly well-suited for high-precision tensioning applications such as large roof trusses, which require parallel wire strands.

- Comprehensive Cross-Domain Application Coverage: Its primary application is in construction projects (bridges, water conservancy pipelines, precast rail sleepers, etc.). It can also be used as a high-pressure hose winding reinforcement (with a pressure resistance exceeding 10 MPa), as a raw material for automotive springs, and even as mattress support wire in the furniture industry, achieving full coverage from major infrastructure projects to consumer products.

- High construction precision and efficiency: With a nominal diameter of 4-7mm and a dimensional deviation of ≤±0.04mm, it can accurately match the anchor hole diameter, making the construction qualification rate 8%-10% higher than that of ordinary steel wire; the surface is smooth and uncoated, and the straightness is high when unfolded, which can significantly simplify the tensioning and anchoring operations and improve construction efficiency.

III. Controllable Overall Costs

Our smooth steel wire products offer comprehensive cost optimization throughout the entire supply chain, from production to maintenance, reducing costs and increasing efficiency for your projects.

- High Production Efficiency and Low Cost: The production process for smooth steel wire eliminates complex processing steps like ribbing and notching, resulting in a 20% shorter production cycle than spiral-ribbed wire, resulting in a correspondingly lower per-ton manufacturing cost. Our factory utilizes a non-acid-washing process (e.g., heating with a resistance furnace), which reduces energy consumption by over 15% and lowers environmental treatment costs, aligning with green production requirements.

- Low Maintenance Costs: In structures, the smooth surface facilitates defect detection. With epoxy coating, the service life can be extended to over 50 years (compared to approximately 30 years for conventional steel wire), significantly reducing the cost of repairs and replacements for long-term projects like bridges and water conservancy projects.

Our product manufacturing and production prioritize engineering safety. We implement multiple quality inspection processes from base material procurement to finished product shipment, and support third-party testing. Choosing our prestressed smooth steel wire reduces steel usage by 10%-15% with its high strength of 1570MPa+, while ensuring over 50 years of durability with a low relaxation rate of ≤2.5%. We offer project-specific selection solutions to assist you with procurement, selection, and construction. For customized requirements, we provide free technical guidance. You can contact us via the phone or email listed on our website to ensure your project is delivered to the highest quality.