Contact Info
- Tel: +86-311-87813582
- Fax: +86-311-87829648
- Email: Kaiwork@126.com
- Whatsapp: +86 86 138 3318 2035
- Add: No.345, Youyi North Street, Shijiazhuang City, Hebei Province, China.
Precast & Structural Infrastructure Grade. Engineered in strict compliance with ASTM A421, BS 5896, and international prestressing standards, our high-tensile low relaxation PC wire combines premium high-carbon steel integrity with specialized thermal-mechanical processing, delivering ultimate tensile strength, minimal stress relaxation, and certified reliability for advanced precast concrete engineering.
High Tensile Low Relaxation PC Wire | ASTM A421 & BS 5896 Certified Prestressing Steel Wire
​Designed for absolute structural performance and minimal long-term prestress loss under rigorous tensioning cycles. Every coil adheres to rigorous metallurgical and geometric benchmarks.
|
Technical Parameter |
Specification Value |
Governing Standard / Design |
|
Manufacturing Standards |
ASTM A416 / ASTM A421 / BS 5896 / ISO 6934 |
International Prestressing Specifications |
|
Nominal Wire Diameters |
4.0 mm to 9.0 mm (Smooth, Indented, or Spiral Ribbed) |
Custom Wire Gauge Options |
|
Tensile Strength Grades |
1470 MPa to 1860 MPa High Tensile Strength |
Strict Mechanical Testing |
|
Relaxation Property |
Low Relaxation (Stress loss ≤ 2.5% at 1000 hours) |
Long-Term Durability Design |
|
Material Composition |
High-Carbon Steel (e.g., SAE 1070 / 1080 Hard-Drawn) |
Premium Metallurgical Grade |
|
Surface Finish |
Plain (Smooth) or Indented / Spiral (Enhanced Bond) |
Concrete Adhesion Optimization |
· ​Superior Low Relaxation Performance: Advanced stabilization processing significantly minimizes long-term stress relaxation, ensuring that the prestressing force remains nearly constant over decades of service.
· ​High Tensile Strength (1470–1860 MPa): Manufactured from premium high-carbon steel, providing exceptional load-carrying capacity and allowing for thinner, lighter, and more efficient concrete structures.
· ​Enhanced Concrete Bonding Profiles: Available in plain, indented, or spiral-ribbed surface configurations that mechanically interlock with surrounding concrete to improve transfer length and bond strength.
· ​Full Batch Traceability & Mill Test Certificates: Produced under strict ISO 9001 frameworks. Every production coil undergoes rigorous tensile, elongation, and wrapping tests accompanied by certified Mill Test Reports (MTR).
​Essential high-performance tensioning elements deployed across diverse civil and precast manufacturing sectors:
· ​Precast Concrete Elements: Hollow-core floor slabs, wall panels, lintels, and pre-tensioned concrete piles.
· ​Railway Infrastructure: High-speed railway prestressed concrete sleepers (ties) and transit track support systems.
· ​Specialized Structures: Pole foundations, small-span bridge beams, and high-strength concrete pipe reinforcement.
​Q: What is the difference between normal relaxation and low relaxation PC wire?
A: Low relaxation PC wire undergoes specialized thermal-mechanical stabilization treatment, which drastically cuts down stress loss over time (down to under 2.5% at 1000 hours), maintaining higher permanent prestress in the structure.
​Q: What surface finishes are available for this wire?
A: We supply plain (smooth) wires as well as mechanically indented or spiral-ribbed wires, which are specifically designed to enhance mechanical bonding with concrete in pre-tensioning beds.
​Q: What is the standard export packaging and transport safety?
A: PC wire coils are securely bound with steel straps, wrapped in moisture-proof plastic film and woven protective cloth, and loaded onto sturdy wooden pallets or containers to prevent transit corrosion.
