Our Bonded PC Strand is manufactured strictly in accordance with international standards such as ASTM A416, BS 5896, ISO 6934-4, and AS/NZS4672.1. Utilizing high-quality high-carbon steel wire rods, our 7-wire strands undergo rigorous stabilizing treatment to ensure exceptionally low relaxation and high tensile strength (Grade 270 / 1860 MPa). It is the premier choice for demanding pre-tensioning and post-tensioning engineering projects globally.
Bonded PC Strand (Prestressed Concrete Steel Strand)
Key Features & Advantages
High Tensile Strength: Available in Grade 270 with a minimum tensile strength of 1860 MPa, offering superior load-bearing capacity.
Exceptionally Low Relaxation: Relaxation value at 1000 hours is less than 2.5% under 70% initial load, ensuring long-term structural stability.
Superior Elongation & Ductility: High uniform elongation ensures excellent safety margins and seismic resistance during tensioning.
Strict Quality Control: 100% traceabilities from raw materials to finished products. Passed deflection tensile tests and fatigue tests.
Typical Applications
This product is widely utilized in major infrastructure and civil engineering, including:
Bridges & Viaducts: Pre-cast concrete girders, segmental bridges, and stay cables.
Buildings & Structures: Large-span industrial workshops, commercial high-rises, and post-tensioned slabs.
Geotechnical Anchoring: Rock/soil anchors, retaining walls, and slope stabilization projects.
Special Containments: LNG storage tanks, nuclear power plant containment vessels, and silos.
Packaging & Shipping
We understand the harsh conditions of international transit. Therefore, we provide robust sea-worthy packaging:
Coil Weight: Commonly 2.5 - 3.5 Metric Tons per coil, or customized to clients' lifting capacities.
Inner Protection: Wrapped with heavy-duty waterproof plastic film and anti-rust paper to isolate moisture.
Outer Protection: Encased in a durable polypropylene woven sheet and secured tightly with 6-8 heavy steel bands.
Palletization: Positioned securely on wooden pallets/skids with eye-to-sky or eye-to-wall loading configurations.
Technical Specification Table
ASTM A416 Standard Technical Data Sheet
Uncoated Seven-Wire Steel Strand for Prestressed Concrete (Grade 270 / 1860 MPa)
|
Nominal Diameter (mm) |
Nominal Diameter (inch) |
Steel Area (mm² ) |
Weight (kg/1000m) |
Min. Breaking Load (kN) |
Min. Load at 1% Extension (Low-Relaxation, kN) |
Elongation in 600mm min. (%) |
|
9.53 |
3/8" |
54.8 |
432 |
102.3 |
92.1 |
≥3.5% |
|
11.11 |
7/16" |
74.2 |
582 |
137.9 |
124.1 |
≥3.5% |
|
12.70 |
1/2" |
98.7 |
775 |
183.7 |
165.3 |
≥3.5% |
|
13.20 |
0.520" |
107.7 |
844 |
200.2 |
180.1 |
≥3.5% |
|
14.29 |
9/16" |
123.9 |
970 |
230.0 |
207.0 |
≥3.5% |
|
15.24 |
0.600" |
140.0 |
1102 |
260.7 |
234.6 |
≥3.5% |
|
17.78 |
0.700" |
189.7 |
1487 |
353.2 |
318.0 |
≥3.5% |