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.
Global Infrastructure Grade. Engineered for high-load post-tensioned and pre-tensioned concrete applications, our 12.7mm (0.5 inch) 7-wire bonded prestressed concrete steel strand delivers exceptional breaking load capacity, strict metallurgical tolerances, and certified compliance with international structural standards.
12.7mm (0.5 inch) 7-Wire Low-Relaxation Bonded PC Strand | ASTM A416 Grade 270
​Designed for critical load paths and high-stress civil structures. Every coil meets rigorous global mechanical benchmarks.
|
Technical Parameter |
Specification Value |
Governing Standard |
|
Nominal Diameter |
12.7 mm (0.500 inch / 1/2") |
ASTM A416 / A416M |
|
Strand Configuration |
7-Wire (1 Center Wire + 6 Helical Outer Wires) |
BS 5896 / EN 10138-3 |
|
Nominal Cross-Sectional Area |
98.7 mm² (0.153 in²) |
GB/T 5224 |
|
Specified Tensile Strength |
1860 MPa (Grade 270) |
ISO 6934-4 |
|
Minimum Breaking Load (MBL) |
≥ 183.8 kN (41,300 lbs) |
ASTM A416 |
|
Relaxation Class |
Class 2 (Low Relaxation, Max 2.5% at 1000h) |
JIS G3536 |
|
Surface Condition |
Uncoated, Bright, Stress-Relieved, Bonded |
Clean, Corrosion-Inhibited Free |
· ​Optimized Low-Relaxation Property: Advanced thermal-mechanical stabilization significantly minimizes long-term stress loss, maintaining stable prestressing force over the structure's design lifecycle.
· ​Superior Bonding Strength: The precise 7-wire geometry offers maximum mechanical interlock with structural grout and concrete, preventing slip in post-tensioned systems.
· ​High Strength-to-Weight Ratio: Premium high-carbon steel wire rods ensure maximum ultimate breaking strength while optimizing structural dead weight.
· ​Full Traceability: Manufactured under stringent ISO 9001 protocols. Each shipment includes a comprehensive Mill Test Certificate (MTC) detailing chemical composition and mechanical test logs.
​Engineered for heavy-load-bearing structural projects across global markets:
· ​Transportation Infrastructure: Highway and railway bridges, box girders, precast segmental bridges, and elevated viaducts.
· ​Commercial & High-Rise Buildings: Post-tensioned slab systems, parking structures, and large-span industrial roofs.
· ​Geotechnical & Marine Construction: Ground anchors, rock slopes, dam reinforcement, and port wharfs.
​Q: What international standards do your 12.7mm PC strands comply with?
A: Our steel strands comply strictly with ASTM A416, BS 5896, EN 10138, and GB/T 5224, ensuring seamless compatibility with global project specs.
​Q: What is the minimum order quantity (MOQ) and export packaging?
A: Standard MOQ is 1 20ft container (approx. 20-27 tons). Coils are wrapped in moisture-proof plastic film, heavy-duty anti-rust woven cloth, secured with steel strapping, and palletized for safe container shipping.
​Q: Can you accommodate third-party inspections?
A: Yes. We fully support independent factory inspections and pre-shipment tests by SGS, BV, Intertek, or TUV.
