Onion jack
Prestressed Onion Jack – Compact & High-Efficiency Tensioning Solution for Structural Applications
Used to press the fixed end of the prestressed steel strand into a pear-shaped scattered flower(Onion) shape, equipped with wedge, spiral ribs and other structural ribs,formed by theem bossing part of the steel strand and the concrete by being wrapped, squeezed, and anchored to Self-anchor head.This saves anchors at the fixed end.
Key Features & Benefits
Single-Strand Design
Ideal for targeted prestressing in precast concrete, beams, and slabs.
High Tensile Strength
Supports heavy loads with excellent force retention.
Corrosion-Resistant Material
Made from high-grade steel with optional coatings for enhanced durability.
Easy Installation
Simplifies tensioning processes, reducing labor time and costs.
Wide Compatibility
Works seamlessly with 7-wire strands, bars, and tendons.
Applications
- Post-tensioning of precast concrete elements (beams, slabs, columns)
- Bridge construction & cable-staying systems
- Building reinforcement & seismic retrofitting
- Nuclear plants, dams & heavy infrastructure
Why Choose Our Onion Jack?
The ergonomic design and high-performance hydraulics make this jack a preferred choice for engineers requiring precision, portability, and power. Compliant with ISO, ASTM, and EN standards, it ensures safety and reliability in critical projects.
Upgrade your tensioning process with our Onion Jack – contact us for details!