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.
Advanced Precast & Structural Infrastructure Grade. Engineered in strict compliance with international prestressing standards, our spiral ribbed low-relaxation PC steel wire combines premium high-carbon steel integrity with a continuous helical ribbed profile and thermal-mechanical stabilization, delivering ultimate tensile strength, minimal stress relaxation, and certified concrete bonding for advanced precast engineering.
Spiral Ribbed Low Relaxation PC Wire | High-Bond Prestressing Steel Wire for Precast Concrete
​Designed for absolute structural performance, superior mechanical interlock, 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 A421 / BS 5896 / ISO 6934 / GB/T 5223 |
International Prestressing Specifications |
|
Nominal Wire Diameters |
4.0 mm to 9.0 mm (Precision Cold-Drawn Gauge) |
Custom Diameter Options Available |
|
Tensile Strength Grades |
1470 MPa to 1860 MPa High Tensile Strength |
Strict Mechanical Testing |
|
Surface Profile |
Spiral Ribbed / Helical Interlock Design |
Enhanced Concrete Adhesion Optimization |
|
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 Rods) |
Premium Metallurgical Grade |
· ​Superior Low Relaxation Performance: Advanced thermal-mechanical stabilization processing significantly minimizes long-term stress relaxation, ensuring that the internal prestressing force remains nearly constant over decades of service.
· ​Enhanced Spiral Ribbed Bonding: Engineered with a continuous helical rib pattern that maximizes 360-degree mechanical interlocking with concrete, providing superior bond strength and a shorter transfer length compared to plain wire.
· ​High Tensile Strength (1470–1860 MPa): Manufactured through multi-stage cold drawing and precise heat treatment, delivering massive load-bearing capacity and structural efficiency for slender precast elements.
· ​Full Batch Traceability & Quality Control: Produced under strict ISO 9001 frameworks. Every production coil undergoes rigorous tensile, elongation, wrapping, and rib-geometry inspections accompanied by certified Mill Test Reports (MTR).
​Essential high-performance tensioning and reinforcement 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 & Poles: Prestressed concrete railway sleepers (ties), centrifugal electric utility poles, and track support systems.
· ​Specialized Structures: High-strength concrete pressure pipes, small-span bridge beams, and high-load pre-tensioned roof panels.
​Q: What are the main advantages of combining spiral ribs with low-relaxation properties?
A: The spiral ribs provide an exceptional mechanical bond with the concrete to prevent slip during transfer, while the low-relaxation treatment ensures that the steel wire maintains its high tension force over decades without significant stress loss.
​Q: What wire diameters are standardly supplied for this product?
A: We supply precision cold-drawn wire gauges ranging from 4.0 mm to 9.0 mm, tailored precisely to your precast structural design requirements.
​Q: What is the standard export packaging and transport safety?
A: PC wire coils are tightly bound with high-strength steel straps, lined with moisture-proof plastic film and heavy-duty woven protective covers, and securely palletized to prevent transit corrosion during global freight.
