High-Tensile Prestressed Steel Strands & Wires: ISO-Certified Solutions for Structural Reinforcement.
Multi-Standard PC Strands for Concrete Reinforcement.
Manufactured to ASTM A416, GB/T5224, and BS 5896 specifications, our prestressed steel strands deliver 1,860–2,160 MPa tensile strength for bridges, high-rises, and nuclear containment structures. Available in 7-wire configurations with 9.5–21.6mm diameters, these strands achieve 15–25% higher load capacity than standard rebar in post-tensioned concrete systems.
Core Product Lines:
- Bonded PC Strands (Epoxy-coated/plain)
- Unbonded PC Strands (HDPE-sheathed with wax)
- Prestressed Wires (Plain/indented/spiral-ribbed)
Technical Specifications by Standard
PC Strands (1×7 Construction)
| Diameter | Standard | Breaking Force (Fm) | 0.2% Proof Load (Fp0.2) | Weight | Tolerance |
|---|---|---|---|---|---|
| 12.7mm | ASTM A416, GB/T5224 | ≥185.1 kN | ≥166 kN | 775g/m (±2%) | +0.4mm/-0.2mm |
| 15.2mm | BS 5896, JIS G3536 | ≥262.5 kN | ≥235 kN | 1,178g/m (±2%) | +0.4mm/-0.2mm |
| 17.8mm | AS/NZS4672, UNE36094 | ≥358 kN | ≥318 kN | 1,500g/m (±2%) | +0.4mm/-0.2mm |
Material Properties:
- Tensile Strength: 1,860–2,160 MPa (Grade 1860/2060/2160)
- Elongation: ≥3.5% (per EN 10138-3)
- Relaxation: ≤2.5% @70% Fm (1,000h test)
Product Range & Applications
1. Bonded PC Strands
- Standards: GB/T5224 (China), ASTM A416 (USA), KS D (Korea)
- Uses:
- 15.2mm (Grade 1860): Precast hollow-core slabs, bridge girders
- 17.8mm (Grade 2160): Nuclear reactor containment vessels
2. Unbonded Strands
- Sheathing: 1.0–1.5mm HDPE (black/color-coded)
- Applications:
- 12.7mm: Slab-on-ground post-tensioning (25% faster installation)
- 15.2mm: Parking structures (corrosion-resistant design)
3. Prestressed Wires
- Types:
- Plain: 3.0–12mm (BS 5896 compliant)
- Indented: 4.0–10mm (enhanced bond with concrete)
- Spiral Rib: 5.0–8.0mm (30% higher adhesion vs smooth wire)
Manufacturing & Quality Assurance
- Wire Drawing: High-carbon billets cold-drawn to 0.2–10mm tolerance.
- Stranding: 7-wire helical formation with 14–18mm lay length.
- Coating:
- Galvanizing: 200–300g/m² zinc (ISO 1461)
- Epoxy: 150–250µm fusion-bonded layer (ASTM A882)
- Testing:
- Tensile Test: EN ISO 15630-3 compliant
- Relaxation Test: 20°C ±2°C, 1,000h duration
Competitive Advantages
| Parameter | Our Products | Industry Average |
|---|---|---|
| Dimensional Tolerance | ±0.3mm | ±0.5mm |
| Lead Time | 15–25 days | 30–45 days |
| MOQ | 5 tons | 20 tons |
Certifications:
- ISO 9001: Quality management system
- CE Marking: EN 10138 compliance
- NQA: Nuclear-grade strand certification
Packing And Delivery
