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7-Wire Epoxy Coated PC Strand 12.7mm
The strand features a fusion-bonded epoxy coating applied through an advanced electrostatic deposition process, delivering superior corrosion protection, enhanced fatigue resistance, and long-term durability, making it an ideal choice for bridge construction, cable systems, and critical infrastructure projects.
Key Advantages of 7-Wire Epoxy Coated PC Strand
This epoxy-coated prestressing steel strand is engineered to deliver long-term corrosion protection, enhanced mechanical performance, and reliable fatigue resistance in demanding structural applications. The following advantages highlight how the filled epoxy-coated seven-wire design improves durability, reduces maintenance risks, and ensures consistent performance in prestressed concrete and cable-supported structures.
Primary Advantages
Epoxy-Filled Interstices for Superior Corrosion Protection
The seven-wire prestressing steel strand is manufactured with epoxy resin filling the interstices between wires, effectively preventing the migration of corrosive substances caused by capillary action or hydrostatic pressure.
Strict Pinhole Control for Coating Integrity
A continuous pinhole detection system is applied during production, ensuring no more than two pinholes per 100 feet (30 meters). This guarantees consistent coating quality, long-term durability, and reliable corrosion resistance.
Reduced Friction and Enhanced Fatigue Resistance
The epoxy filling tightly bonds the seven steel wires together, forming a friction-reducing layer between individual wires. This minimizes wire dislocation and internal friction under load, significantly reducing fretting wear fatigue and improving overall fatigue performance.
Improved Tensile Performance
Compared to conventional single-wire epoxy-coated steel strands, filled epoxy-coated prestressing strands deliver approximately 3-4% higher tensile strength, contributing to improved structural efficiency and long-term reliability.
Why Choose This Epoxy-Coated PC Strand?
Our 7-Wire Epoxy Coated PC Strand 12.7mm is designed to solve one of the biggest problems in prestressed structures, corrosion-related failure. With a filled epoxy coating system, this strand provides strong resistance against chemical attack, abrasion, and moisture penetration, helping extend the service life of prestressed concrete structures while reducing maintenance and long-term repair costs.
Excellent corrosion resistance for aggressive and marine environments
Strong chemical and abrasion resistance for long-term durability
Reduced risk of corrosion stress cracking in prestressed steel
Improved fatigue performance under repeated loading
Longer service life compared to conventional prestressing strands
What Sets Our Product Apart?
As a professional manufacturer, Tianjin WASUNGEN Metal Products Co., Ltd. is committed to delivering consistent quality, reliable performance, and engineering-grade solutions. Our epoxy-coated PC strands are produced using advanced manufacturing technology, strict quality control systems, and industry-recognized standards to meet the demands of global infrastructure projects.
Manufactured in compliance with ASTM A882/A882M and ASTM A416/A416M standards
Strict quality control including continuous pinhole detection and mechanical testing
Stable production capacity to support large-scale infrastructure projects
Proven experience in supplying prestressing materials for bridges and civil engineering
Reliable quality guarantee ensuring long-term performance and durability
Applications / Use
As a modern prestressed steel material, the 7-Wire Epoxy Coated PC Strand 12.7mm is widely used in bridge construction and major infrastructure projects, especially where long-term corrosion protection is required. Its filled epoxy coating provides excellent resistance against moisture, chemicals, and harsh environmental conditions, making it suitable for a wide range of cable and anchoring systems.
Typical Applications Include:
Cable-stayed bridge cables
External and internal prestressing cables
Suspension bridge cables
Tie-down and tie cables
Geotechnical anchor cables
Anchor prestressed cable systems
With high durability, stable mechanical performance, and strong corrosion resistance, this prestressing steel strand is a reliable choice for long-lasting, low-maintenance, and corrosion-resistant construction projects.
Grade | Nominal Diameter (mm) | Nominal Diameter (in.) | Tensile Strength (N/mm²) | Minimum Breaking Load (kN) | Minimum Load at 1% Extension (kN) | Elongation Lo = 610 mm (%) | Relaxation at 1000h (Initial load to 70% of nominal max load) Not more than (r/%) |
| 270 (1860) | 9.53 | 3/8 | 1860 | 102.30 | 92.10 | 3.5 | 6.5 |
| 11.11 | 7/16 | 1860 | 137.90 | 124.10 | |||
| 12.70 | 1/2 | 1860 | 183.70 | 165.30 | |||
| 15.24 | 3/5 | 1860 | 260.70 | 234.60 | |||
| 17.78 | 7/10 | 1860 | 353.20 | 318.00 |
As per the client's requirement
FAQ about 7-Wire Epoxy Coated PC Strand 12.7mm
Q: What is an Epoxy Coated PC Strand?
A: An Epoxy Coated PC Strand is a seven-wire prestressing steel strand coated and filled with epoxy resin to provide excellent corrosion resistance. It is a type of prestressed material widely used in bridges and cable structures.
Q: What are filled epoxy-coated strands?
A: Filled epoxy-coated strands have epoxy resin filling the interstices of the seven wires. This minimizes corrosion, reduces friction between the wires, prevents fretting wear fatigue, and increases tensile strength compared to standard epoxy-coated steel strands.
Q: Where can I use epoxy-coated steel strands?
A: Our epoxy-coated steel strands are ideal for applications such as cable-stayed cables, suspension cables, tie cables, internal and external cables, geotechnical anchor cables, and anchor prestressed cables.
Q: How are filled epoxy steel strands different from regular prestressed steel strands?
A: Filled epoxy steel strands provide higher tensile strength, better fatigue resistance, and superior chemical and abrasion resistance. Unlike ordinary prestressed steel strands, they effectively prevent corrosion stress failure, ensuring a longer service life.
Q: Why should I choose this 7-wire epoxy-coated PC strand?
A: Choosing our seven-wire prestressing steel strand guarantees high-quality, long-lasting performance. With minimal pinholes, tight epoxy filling, and a friction-reducing layer, it enhances fatigue resistance and reliability in demanding projects.
