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.
Heavy-Duty Bridge Infrastructure Grade. Engineered specifically for cable-stayed bridges, suspension bridges, and long-span highway viaducts, our 7-wire galvanized prestressed concrete steel strand combines premium 1860 MPa mechanical strength with a high-purity zinc coating, delivering ultimate breaking load performance, superior atmospheric corrosion resistance, and certified compliance with international bridge engineering standards.
7-Wire Galvanized PC Strand for Bridges | High-Tensile Anti-Corrosion Bridge Tendon
​Designed for critical load paths in aggressive atmospheric and marine bridge environments. Every coil adheres to stringent international mechanical and galvanization benchmarks.
|
Technical Parameter |
Specification Value |
Governing Standard |
|
Available Diameters |
12.7 mm (0.5 inch) / 15.24 mm (0.6 inch) / 17.8 mm |
ASTM A475 / ASTM A416 |
|
Strand Configuration |
7-Wire (1 Center Wire + 6 Helical Outer Wires) |
BS 5896 / EN 10138-3 |
|
Specified Tensile Strength |
1860 MPa (Grade 270 High Tensile) |
ISO 6934-4 / ASTM A416 |
|
Galvanized Coating |
Heavy-Duty Zinc Coating (High Purity ≥ 99.99 %) |
ASTM A475 / EN 10244-2 |
|
Relaxation Class |
Class 2 (Low Relaxation, Max 2.5% at 1000h) |
JIS G3536 |
|
Surface Condition |
Uniformly Galvanized, Passivated, Stress-Relieved |
Corrosion-Inhibited Free |
· ​Superior Zinc Galvanized Defense: Uniformly coated with a high-purity zinc layer that provides active sacrificial anode protection, shielding the high-carbon steel core from atmospheric oxidation and saltwater corrosion.
· ​High-Tensile Structural Core: Built upon premium 1860 MPa low-relaxation 7-wire steel strands, delivering uncompromising ultimate breaking load (MBL) reliability for heavy bridge spans.
· ​Optimized Low-Relaxation Performance: Advanced thermal-mechanical stabilization restricts long-term stress relaxation, ensuring permanent prestressing force retention over decades of bridge operation.
· ​Full Metallurgical Traceability: Manufactured under stringent ISO 9001 protocols. Each commercial shipment includes a comprehensive Mill Test Certificate (MTC) verifying zinc coating mass, tensile strength, and elongation.
​Engineered for heavy-load-bearing structural applications across modern bridge and transportation infrastructure:
· ​Cable-Stayed & Suspension Bridges: Main stay cables, suspension cables, and structural tie-downs exposed to open-air environments.
· ​Long-Span Highway & Railway Viaducts: External prestressed tendons, box girder reinforcements, and segmental bridge assembly.
· ​Marine & Coastal Infrastructure: Pier reinforcements, cross-sea bridge cross-beams, and structures subject to high humidity and de-icing chemicals.
​Q: How does the galvanization protect the strand in bridge applications?
A: The heavy zinc coating provides a dual mechanism: a physical barrier preventing moisture contact and a galvanic (sacrificial) protection that actively prevents rust formation even if minor surface scratches occur.
​Q: Do these galvanized strands comply with international bridge standards?
A: Yes. The base steel strands and zinc coating comply strictly with international standards such as ASTM A416, ASTM A475, BS 5896, and EN 10244, meeting the rigid specifications of global bridge engineering consultants.
​Q: What is the standard export packaging for container shipment?
A: Coils are wrapped in heavy-duty moisture-proof materials, secured with high-tensile steel strapping, and palletized to prevent zinc coating abrasion during international containerized transport.
