XQV Steel Strand Cable – High-Strength Prestressed Concrete Steel Strand for Post-Tensioning

Low-Relaxation PC Strand – Reliable Tensile Performance for Bridge, Building & Infrastructure Projects

Product Introduction

XQV steel strand cable is a high-strength prestressed concrete steel strand specifically designed for post-tensioning and pre-tensioning applications. Manufactured from high-carbon steel wire, the strand features a seven-wire configuration (1×7) with low-relaxation properties, ensuring stable and long-lasting prestress retention. The steel strand is widely used in bridge construction, high-rise buildings, parking structures, wind power towers, and various prestressed concrete members. With excellent tensile strength, fatigue resistance, and bond characteristics, XQV steel strand cable meets international standards and provides reliable performance for critical infrastructure projects.

Key Features & Advantages

💪 High Tensile Strength: Ultimate tensile strength up to 1860MPa, 1960MPa, or 2000MPa as required.

📉 Low Relaxation: Relaxation rate ≤ 2.5% after 1000 hours, ensuring minimal prestress loss over time.

🔧 Seven-Wire Configuration: Standard 1×7 construction with smooth or indented surface for better bond with concrete.

🔄 Excellent Fatigue Resistance: Withstands dynamic loads in bridges and heavy traffic structures.

📏 Wide Diameter Range: Available in 9.5mm, 12.7mm, 15.2mm, 15.7mm, 17.8mm, and 21.8mm.

🛡️ Corrosion Protection: Available as bare strand, epoxy-coated, or galvanized for harsh environments.

📜 Compliant Standards: Manufactured to ASTM A416, BS 5896, EN 10138, GB/T 5224, JIS G3536.

📦 Custom Packaging: Available in coils or reels with various lengths per order.

Technical Parameter – Steel Strand Cable

Parameter	9.5mm	12.7mm	15.2mm	15.7mm	17.8mm	21.8mm
Nominal Area (mm²)	54.8	98.7	140	150	190	285
Tensile Strength (MPa)	1860-2000	1860-2000	1860-2000	1860	1860	1770
Min Break Load (kN)	102	184	260	279	353	505
0.1% Proof Load (kN)	87.7	158	224	240	304	434
Elongation at Break (%)	≥3.5
Relaxation (1000h, 70% load)	≤2.5%
Construction	1×7

* All parameters for reference only. Custom specifications available upon request.

Components

Component Name	Specification/Description	Materials	Standard
Steel Wire (Core)	Center wire diameter: +1% to +3% of outer wires	High-carbon steel	ASTM A416 / GB/T 5224
Steel Wire (Outer)	6 wires helically wound around core	High-carbon steel	ASTM A416 / GB/T 5224
Surface Coating (Optional)	Epoxy / Galvanized / PE sheathing	Epoxy / Zinc / PE	Custom

Application

XQV Steel Strand Cable is widely used as prestressing tendons in concrete structures requiring high tensile strength and low relaxation. Typical applications include:

Bridge Engineering: Used as prestressing tendons in post-tensioned box girders, T-beams, segmental bridges, and cable-stayed bridge stays. Provides reliable load transfer under dynamic traffic conditions.

Building Construction: Applied in post-tensioned floor slabs, transfer beams, foundations, and parking garages. Reduces structural depth while maintaining load capacity.

Precast Concrete Industry: Used in precast beams, hollow-core slabs, piles, railway sleepers, and concrete poles. Ensures consistent prestress transfer in factory production.

Wind Power Towers: Anchors prestressing tendons in wind turbine towers for onshore and offshore projects. Withstands cyclic fatigue loads.

Ground Anchors & Soil Nailing: Provides tensile elements for slope stabilization, retaining walls, and deep excavation support. Suitable for permanent and temporary ground anchors.

Water Conservancy: Applied in dam tendons, lock chambers, and hydraulic tunnel linings. Resists high water pressure and aggressive environments.

Mining & Geotechnical: Used in rock bolting and cable anchors for underground mine support. High strength ensures safety in challenging ground conditions.

Workshop

Our Manufacturing Base – Liuzhou Xuanqiao Prestressed Machinery Co., Ltd.

Located in Liuzhou, Guangxi – a key industrial hub for prestressed technology – our modern workshop covers over 10,000㎡. We operate CNC machining centers, automated assembly lines, and precision testing equipment to ensure consistent quality.

Every batch of raw material is inspected, and finished products (anchors, jacks, pumps, ducts) are tested in our in‑house laboratory for mechanical performance and pressure resistance. We are certified under ISO 9001:2015 and comply with FIP international standards.

Annual capacity: 6 million anchor holes and 1,000+ sets of hydraulic equipment. Our experienced technicians and engineers follow strict SOPs to guarantee reliability.

We maintain sufficient raw material inventory and finished goods for fast delivery. Continuous investment in equipment and training keeps us at the forefront of prestressed manufacturing – because a strong factory means reliable products and long‑term trust.