Spiral Ribbed PC Steel Wire with Spiral Ribs

Spiral Ribbed PC Steel Wire – Enhanced Bonding for Stronger Concrete Structures

Our spiral ribbed prestressed concrete (PC) wire takes structural performance to the next level. The unique spiral rib profile creates a mechanical interlock between the wire and surrounding concrete, dramatically improving bond strength and load transfer compared to smooth surface wire.

Key Specifications:
• Standards: ASTM A421, BS 5896, GB/T5223
• Diameter range: 4mm – 10mm
• Tensile strength: 1470 / 1570 / 1670 / 1770 / 1860 MPa
• 1000-hour relaxation rate: ≤ 2.5% (at 70% of breaking load)
• Elongation at break: ≥ 3.5%
• Surface: Spiral ribbed for maximum concrete bond
• Material: High carbon steel rod SWRH77B, SWRH82B (non-alloy)

Superior Bonding, Superior Performance
The helical rib design isn’t just cosmetic – it’s engineered for results. By increasing the contact surface area and creating mechanical anchorage points along the entire length of the wire, spiral rib PC wire delivers:
• Up to 2x better bond strength vs. smooth wire
• Reduced slippage under load
• More efficient stress distribution
• Improved crack control in concrete elements

Manufacturing Excellence:
Produced through a precision cold-drawing process, each coil undergoes rigorous quality control including tensile testing, relaxation testing, and dimensional verification. The result is wire with consistent mechanical properties you can count on, project after project.

Packaging:
Each coil is carefully wrapped with anti-rust plastic paper and PP woven cloth, secured with steel strapping to maintain integrity during ocean transport. Available in coil weights from 0.4 to 2.0 tons.

Applications:
Ideal for precast concrete elements, railway sleepers, electric poles, piles, bridge girders, floor slabs, and any prestressed concrete application where superior bond performance is critical.

Order Information:
• MOQ: 25 metric tons
• Payment terms: T/T, L/C
• Lead time: 10 – 15 working days
• Shipping: Sea freight
• Samples: Free samples available (freight collect)

With over 20 years of experience in prestressed steel products, we supply spiral ribbed PC wire that meets the toughest international standards. Request your quote today.