1*19 structure 21.8mm prestressed steel strand is ordinary bonded steel strand, using SWRH82B material, with strength grades including 1860MPa and 1960MPa.
Product Parameters
| Product Name | Prestressed Steel Strand |
| Structure | 1*19S |
| Nominal Diameter（mm） | Ф17.80 |
| Strength Grade（MPa） | 1860 1960 |
| Nominal Cross-sectional Area（mm²） | 208 |
| Theoretical Weight per Meter（g/m） | 1652 |
| Relaxation Rate （%） | ≤2.5%（1000 hours, under 70% breaking load） |
| Straightness （mm） | ≤25mm |
| Material | Usually SWRH82B For above 2160MPa use 87MnSi |
Twist Direction （right twist requires special marking） | Left |
| Maximum Force of Whole Strand（kN） | 387-428 |
| Elongation （%） | ≥3.5 |
| Elastic Modulus | 195±10 |
| Execution Standard | GB/T 5224 |
| Support Customization | Materials、Tensile strength、Weight、Length、Unbonded steel strands、Packaging、Other customer requirements |
| Advantages/Features | High product strength, high elongation, corrosion resistance.When combined with anchors, it can effectively reduce the risk of coal mine collapse |
| Application Fields | Coal mine support |
| Length Width Height （cm）/piece | Inner diameter 75 * Outer diameter 110 * Height 80 |
| Weight/Piece | 3±0.5 tons |
Packaging
Logistics
Aosen Metal Products supports rail, road, sea, and multimodal transport. It has a fleet of over 1,800 vehicles, with a daily factory throughput of 80,000 tons.
Application Scenarios
Large-span structural engineering
Wind power generation
Public infrastructure
Coal mine support
Railways
Bridges
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Material & Grade: The base steel grade (e.g., Q195, 45#, 70#, SAE 1008, SWRH82B) determines core mechanical properties. For spring applications, high-carbon grades are essential; for general binding, mild steel is suitable.
Mechanical Properties: Define your required tensile strength, yield strength, and elongation. For structural applications like bridges, low-relaxation prestressed strand with specific fatigue resistance is critical.
Corrosion Protection: Evaluate the environmental exposure. For outdoor, coastal, or high-humidity environments, a hot-dip galvanized or zinc-aluminum coating with a specified weight (g/m²) is vital. For indoor or less corrosive settings, electro-galvanizing or phosphating may suffice.
Dimensional Tolerances: The exact diameter and consistency across the coil are critical for downstream processes like drawing, weaving, or stranding. Our digital measurement ensures adherence to tight tolerances.
Standards & Certifications: Confirm the product meets the relevant standards for your region and industry, such as ASTM, BS, EN, GB, or JIS.
Customized Solutions: We don't just sell wire; we engineer solutions. Our team assists with material selection, process customization, packaging, and technical specification development.
Streamlined Ordering: Our process is designed for efficiency. Spot orders ship within 24 hours, while custom orders follow a clear workflow: requirement docking, feasibility assessment, sample production, mass production, and after-sales support.
Technical Support & Testing: Our in-house laboratory and dedicated quality team can provide complete testing reports. We support third-party inspections (including SGS) and can troubleshoot application issues to ensure product performance.
Reliable After-Sales: With a responsive customer service team, we ensure clear communication and support, guaranteeing that your experience with Aosen is as reliable as the wire we manufacture.
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