12.7mm 15.2mm Prestressed Concrete Steel Strand ASTM A416 Grade 270 PC Steel Strand
Prestressed steel strand is a steel product made by twisting multiple high-strength steel wires. By applying prestress, it can greatly improve the tensile performance of concrete structures and is the core load-bearing material of prestressed concrete engineering.
Mainstream specifications: Made by twisting 7 steel wires with a diameter of 5mm~7mm, the finished product diameter is usually 12.7mm, 15.2mm, 17.8mm, 21.6mm, etc.
Mechanical properties: The tensile strength can reach 1860MPa, which is more than 6 times that of ordinary steel.
| Grade | Nominal Diameter (mm) | Tolerance (mm) | Area of Section (mm²) | Weight of strand (kg/1000m) | Minimum Breaking Load (KN) | Minimum Load at 1% extension (KN) | Elongation not less than (%) | 1000Hrs Relaxation Value Not More Than |
|---|---|---|---|---|---|---|---|---|
| 250 | 9.53 | ±0.41 | 51.61 | 405 | 89.0 | 80.1 | 3.5 | 2.5 | 3.5 |
| 11.11 | ±0.41 | 69.68 | 548 | 120.1 | 108.1 | 3.5 | 2.5 | 3.5 | |
| 12.70 | ±0.41 | 92.90 | 730 | 160.1 | 144.1 | 3.5 | 2.5 | 3.5 | |
| 15.24 | ±0.41 | 139.35 | 1094 | 240.2 | 216.2 | 3.5 | 2.5 | 3.5 | |
| 270 | 9.53 | +0.65/-0.15 | 54.84 | 432 | 102.3 | 92.1 | 3.5 | 2.5 | 3.5 |
| 11.11 | +0.65/-0.15 | 74.19 | 582 | 137.9 | 124.1 | 3.5 | 2.5 | 3.5 | |
| 12.7 | +0.65/-0.15 | 98.71 | 775 | 183.7 | 165.3 | 3.5 | 2.5 | 3.5 | |
| 15.24 | +0.65/-0.15 | 140.00 | 1102 | 260.7 | 234.6 | 3.5 | 2.5 | 3.5 |
| Steel Grade | Nominal Diameter (mm) | Tolerance (mm) | Area of Section (mm²) | Weight of strand (kg/1000m) | Breaking Load (KN) | Load at 0.2% permanent elongation (≥KN) | Minimum Elongation at Max Load ≥(%) | Relaxation Value 1000h ≤(%) |
|---|---|---|---|---|---|---|---|---|
| SWPR7A | 9.3 | +0.4/-0.2 | 51.61 | 405 | 88.8 | 75.5 | 3.5 | 3.0 |
| 10.8 | +0.4/-0.2 | 69.68 | 546 | 120.0 | 102.0 | 3.5 | 3.0 | |
| 12 | +0.4/-0.2 | 92.90 | 729 | 160.0 | 136.0 | 3.5 | 3.0 | |
| 15 | +0.4/-0.2 | 138.70 | 1101 | 240.0 | 204.0 | 3.5 | 3.0 | |
| SWPR7B | 9.2 | +0.4/-0.2 | 54.84 | 432 | 102.0 | 86.8 | 3.5 | 3.0 |
| 11.1 | +0.4/-0.2 | 74.19 | 580 | 138.0 | 118.0 | 3.5 | 3.0 | |
| 12.7 | +0.4/-0.2 | 98.71 | 774 | 183.0 | 156.0 | 3.5 | 3.0 | |
| 15.2 | +0.4/-0.2 | 138.70 | 1101 | 261.0 | 222.0 | 3.5 | 3.0 |
- High strength: Can effectively reduce the cross-sectional size of the structure and lower engineering costs
- Flexibility: Convenient for transportation and on-site construction, adaptable to complex structural shapes
- Durability: Special anti-corrosion treatment can extend the service life of the structure to over a hundred years
- Standardization: Unified specifications, stable quality, convenient for engineering design and construction
- Bridge engineering: Box girders, cable-stayed cables, and main suspension cables for large-span bridges
- Building structure: High-rise building floor slabs, transfer floors, prestressed frames
- Transportation Engineering: Highway slope anchoring, railway sleepers, tunnel support
- Special engineering: Nuclear power plant containment, dam body, offshore platform structure
Our steel wire rope meets international production standards and has obtained multiple certifications such as SGS, CE, ISO, etc.
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