1*7 structure 12.7mm prestressed steel strand is ordinary bonded steel strand (can be made unbonded), using SWRH82B material, with strength grades including 1860MPa and 1960MPa.
Description
We are a professional manufacturer of pre-stressed steel strand, not a trader.
Through the scientific selection of production processes, high-quality configuration of core equipment, and refined parameter control throughout the entire production process, we can achieve precise control over every link from raw materials to finished products. This endows our steel strand with distinct advantages in core dimensions such as mechanical properties, structural stability, and durability and damage resistance, fully meeting the requirements for high load, high reliability and long-cycle service in engineering applications.
Structure ：1*7，1*19
Diameter ：9.53mm，12.7mm，15.2mm，15.7mm，17.8mm，18.9mm，21.6mm，28.6mm
Tensile Strength：1770MPa，1860MPa，1960MPa，2160MPa
Product Customization: Raw materials, tensile strength, weight, length, packaging method (e.g., with fumigated wooden strips added), and other customer requirements.
We can supply unbonded steel strand (HDPE-coated steel strand) per your specific requirements.
We adhere to the following international standards in the supply of industrial pre-stressed steel strand.
GB/T5224；ASTM A416；BS 5896；EN 10138；JIS G3536；GOST R 53772-2010
We also have a complete set of inspection equipment, conduct inspections on each batch of products, and all our products are delivered from the factory with accompanying inspection reports.
Product Parameters
| Product Name | Prestressed Steel Strand |
| Structure | 1*7 |
| Nominal Diameter（mm） | Ф12.70 |
| Strength Grade（MPa） | 1860 1960 |
| Nominal Cross-sectional Area（mm²） | 98.7 |
| Theoretical Weight per Meter（g/m） | 775 |
| Relaxation Rate （%） | ≤2.5%（1000 hours, under 70% breaking load） |
| Straightness （mm） | ≤25mm |
| Material | Usually SWRH82B For above 2160MPa use 87MnS |
Twist Direction （right twist requires special marking） | Left |
| Maximum Force of Whole Strand（kN） | 184-203 |
| Elongation （%） | ≥3.5 |
| Elastic Modulus | 195±10 |
| Execution Standard | GB/T 5224 ASTM A416 |
| Support Customization | Materials、Tensile strength、Weight、Length、Unbonded steel strands、Packaging、Other customer requirements |
| Support Oil Spraying | Yes |
| Support Unbonded | Yes |
| Advantages/Features | High product strength, high elongation, corrosion resistance, effectively improving bridge load-bearing capacity and wind load resistance |
| Application Fields | Bridges, wind energy |
| 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 Field
Large-span structural engineering Large-span Structural Engineering Projects
Wind power generation
Public infrastructure
Coal mine support
Bridges
Railways
Related Products
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1*7 Ф18.90mm Steel Strand
Contact Us
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.
Contact Us
Service Hotline:
+86 131 8000 1253
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