The Quadrant Kerb HB (255 x 305mm, QHB305) is a heavy-duty, robust precast concrete accessory engineered to form neat 90-degree internal or external radial turns at corners, junctions, and radius points in civil engineering and highway projects. Specifically designed to match half-batter (HB) standard profile kerbs, this quadrant unit bridges straight kerb runs smoothly while providing exceptional structural stability and alignment at high-traffic intersections.
 
Manufactured from high-strength, premium-grade concrete, this quadrant kerb is built to withstand rigorous service conditions, including heavy vehicular overrun, regular turning loads from commercial and public transport vehicles, and severe weathering or frost action. Its dense, durable composition resists cracking, chipping, and abrasion, ensuring that critical street corners and access points maintain their structural integrity and sharp architectural lines over decades of heavy use.
 
Designed for straightforward installation on site, the unit beds down securely into a robust concrete foundation and haunching to lock adjacent kerb lines firmly into position and prevent displacement under load. Whether you are constructing a new roadway, upgrading a commercial access slipway, or defining a municipal car park layout, this trade-quality quadrant kerb delivers reliable corner containment, smooth directional transitions, and a professional finished standard.