Bondless prestressed steel strand is a type of prestressed construction material. It has a special anti-corrosion lubricant applied to the surface of ordinary prestressed steel strands, and is then encased in a high-density polyethylene (PE) sheath. The overall structure is compact and highly protective, allowing for direct construction without the need for grouting. It is mainly used in infrastructure, hybrid wind power towers, and other prestressed structures.
Description
| Product Name | Unbonded Steel Strand（HDPE Steel Strand） | ||
| Structure | 1*7 | ||
| Nominal Diameter（mm） | Ф12.7 | Ф15.2 | Ф15.7 |
| Strength Grade（MPa） | 1860、1960 | 1860、1960 | 1860、1960 |
| Nominal Cross-sectional Area（mm²） | 98.7 | 140 | 150 |
| Theoretical Weight per Meter（g/m） | 775 | 1101 | 1178 |
| Relaxation Rate （%） | ≤2.5%（1000 hours, under 70% breaking load） | ||
| Straightness （mm） | ≤25mm | ||
| Material | SWRH82B | ||
| Twist Direction （right twist requires special marking） | Left | ||
| Maximum Force of Whole Strand （kN） | 184-203 | 260-288 274-302 | 279-309 |
| Elongation（%） | ≥3.5 | ||
| Elastic Modulus | 195±10 | ||
| Execution Standard | GB/T 5224 ASTM A416 | GB/T 5224 ASTM A416 | GB/T 5224 Q/CR 907 ASTM A416 |
| Support Customization | Materials、Tensile strength、Weight、Length、Packaging、Other customer requirements | ||
| Advantages/Features | High product strength, high elongation, corrosion resistance, effectively improving bridge load-bearing capacity and wind load resistance | ||
| Application Fields | wind energy | wind energy | wind energy |
| Length Width Height （cm）/piece | Inner diameter 85*Outer diameter 120*Height 75 | Inner diameter 85*Outer diameter 120*Height 75 | Inner diameter 85*Outer diameter 120*Height 75 |
| Weight /Piece | 3±0.5 tons | ||
HDPE steel strands have excellent corrosion resistance, effectively preventing steel strand rust and significantly extending the service life of structures. Construction does not require grouting, and the process is simple and fast, effectively shortening the construction period and reducing project costs. The product has good flexibility, low tension friction resistance, uniform stress distribution, and excellent resistance to relaxation. It is easy to maintain and is the preferred material for wind turbine concrete towers and long-span structural supports.
Materials supplied by oneself：Using self-produced, high-quality high-carbon steel wire rods, with stable and controllable raw materials, ensures the mechanical properties and quality consistency of the products from the source.
Full specification coverage：Full Specification Coverage: The company has established intelligent standard production workshops, capable of stably mass-producing steel strands of all specifications. With ample stock available, it can quickly respond to various order demands.
Highly Customized: Highly customizable: Supports personalization of raw materials, strength, diameter, packaging, etc., with professional moisture-proof packaging suitable for long-distance sea and land transportation.
Full-process service: Relying on a comprehensive warehousing and logistics system and a professional technical team, we balance supply efficiency with after-sales technical service, providing stable and reliable steel supply support for various infrastructure projects.
It comes with self-lubricating anti-corrosion grease and a PE sheath, requiring no grouting, with simple construction and good corrosion resistance.
Yes, it supports customization in black, color, and other options, making it convenient for on-site differentiation and use.
Regular standard specifications are available for immediate delivery. Large-volume orders and customized products can be expedited in production. The delivery cycle is short, and shipment schedules can be flexibly matched according to project timelines to avoid delaying construction progress.
Our company's export goods are all shipped from Tianjin Port, with stable shipping schedules and fast customs clearance. We can provide formal export documentation, fumigation packaging, and comprehensive maritime services, supporting global shipments with reliable and hassle-free delivery.
Packaging
Non-bonded steel strands are produced using the standard coiled winding process and are carried on solid wood pallets. The outer layer is fully wrapped with blue waterproof woven fabric and reinforced and sealed with steel straps. The packaging provides dustproof, moisture-proof, and wear-resistant protection, effectively safeguarding the integrity of the PE sheath, preventing damage and contamination during transportation, and is suitable for on-site storage, long-distance land transport, and full truckload shipping requirements.
Logistics
Aosen 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
Bridges
Railways
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