High Strength Steel Wire – Premium Cold-Drawn Steel Wire for Prestressed Concrete & Spring Applications

High-Carbon Steel Wire with Excellent Tensile & Fatigue Properties – Ideal for PC Strand, Springs & Cables

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Payment Type: T/T

Delivery: 10-30 days

High Strength Steel Wire for Bridge Cables | Hot-Dip Galvanized & Epoxy-Coated Steel Wire

High Strength Steel Wire for Bridge Cables – Premium Hot-Dip Galvanized & Epoxy-Coated Steel Wire

High-Durability Steel Wire with 1670-1960MPa Tensile Strength – Ideal for Suspension Bridge Main Cables & Stay Cables

Product Introduction

High-strength steel wires must meet the core requirements of bridges for long-term load-bearing, fatigue resistance, and corrosion resistance, with their characteristics concentrated in the following aspects:

1. Excellent Mechanical Properties: The tensile strength reaches over 1600MPa, far exceeding that of ordinary steel bars, which can reduce the self-weight of cables and optimize the cross-section. The elastic modulus is about 200-210GPa, resulting in small deformation under force, ensuring stability under dynamic loads. It also has certain plasticity and toughness to avoid brittle fracture.

2. Strong Fatigue Resistance: Stress concentration is reduced through process optimization, enabling it to withstand millions of cycles of loads. Surface treatments (such as galvanizing) reduce the impact of stress corrosion, meeting the design life requirement of ≥50 years.

3. High Durability and Corrosion Resistance: Hot-dip galvanizing forms a protective layer of ≥85μm, resisting corrosion through sacrificial anodes. Some grades contain alloying elements, forming a self-healing oxide layer. Combined with epoxy coating, PE sheathing, grease filling, etc., to isolate corrosive media.

4. Precise Dimension and Shape Control: Diameter deviation ≤ ±0.06mm to ensure uniform force bearing. Good straightness and winding property ensure no excessive stress during stranding, guaranteeing cable consistency.

Key Features & Advantages

💪 High Tensile Strength: Available in 1670MPa, 1770MPa, 1860MPa, and 1960MPa grades.

📊 Excellent Mechanical Properties: Elastic modulus 200-210GPa, elongation ≥4%, ensuring stability under dynamic loads.

🔄 Strong Fatigue Resistance: Withstands millions of load cycles, meeting ≥50 years design life.

🛡️ Hot-Dip Galvanized Coating: Coating thickness 0.13-0.30mm, sacrificial anode protection against corrosion.

🎨 Epoxy-Coated Option: Additional corrosion protection for aggressive environments.

📏 Precise Dimensional Control: Diameter tolerance ±0.06mm (5mm series) or ±0.07mm (7mm series).

📉 Low Relaxation Performance: Class II relaxation ≤2.5% (smooth/galvanized) or ≤4.5% (epoxy-coated).

📜 Compliant Standards: Manufactured to GB/T 17101, GB/T 25835, and international equivalents.

Technical Parameter – High-Strength Steel Wire Performance

Serial	Parameter	Unit	5mm Series	7mm Series
1	Diameter Tolerance	mm	±0.06	±0.07
2	Out-of-roundness	mm	≤0.06	≤0.07
3	Nominal Cross-sectional Area S	mm²	19.6	38.5
4	Reference Mass per Meter	g/m	153	301
5	Coating Thickness (HDG)	mm	0.13-0.30	0.13-0.30
6	Strength Level	MPa	1670/1770/1860/1960	1670/1770/1860/1960
7	Plastic Extension Strength (Smooth & Galvanized, Class II) ≥	MPa	1490/1580/1660/1750	1490/1580/1660/1750
8	Plastic Extension Strength (Epoxy-coated, Class II) ≥	MPa	1410/1500/1580/—	1410/1500/1580/—
9	Relaxation (Smooth & Galvanized, 0.7Fmb×1000h, Class II) ≤	%	2.5	2.5
10	Relaxation (Epoxy-coated, 0.7Fmb×1000h, Class II) ≤	%	4.5	4.5
11	Elongation after Fracture (ΔL=250mm) ≥	%	4

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

Production Standards

High-strength Steel Wire Production Standards:

• GB/T 17101 – 2019: Hot-galvanized or Zinc-aluminum Alloy Steel Wires for Bridge Cables

• GB/T 25835 – 2010: Epoxy-coated Steel Wires for Cables

Application

High strength steel wire for bridge cables is specifically designed for critical cable-supported bridge applications. Typical applications include:

Suspension Bridge Main Cables: Used as parallel wire strands (PWS) for main cables of long-span suspension bridges.

Cable-Stayed Bridge Stay Cables: Applied as galvanized steel wires for stay cables in cable-stayed bridges.

Bridge Hanger Cables: Used for vertical and inclined hangers in arch bridges and suspension bridges.

Prefabricated Parallel Wire Strands: Formed into factory-assembled strands for efficient on-site cable erection.

Corrosion Protection Systems: Combined with epoxy coating, PE sheathing, or grease filling for aggressive environments.

Bridge Retrofit & Strengthening: Applied for cable replacement or additional cable systems in existing bridges.

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.