Large-diameter stormwater pipelines, culverts, and manholes present unique engineering challenges. Structural performance, joint integrity, and installation efficiency become increasingly critical as diameters increase and ground conditions vary.
To address these requirements, Gradco SA, in partnership with Pianoboard Krah Pipes, offers structured wall HDPE systems engineered for specialised applications.
Why Structured Wall Design Matters
Structured wall HDPE pipes achieve high ring stiffness with reduced material mass. This allows large-diameter pipelines to maintain structural performance while remaining lighter and easier to handle on site.
Integrated Electrofusion Jointing
A defining feature of the Krah system is the integrated electrofusion coupling. This jointing method creates a homogeneous pipeline system, significantly reducing the risk of infiltration and exfiltration. It is particularly advantageous in narrow trenches and areas with variable ground conditions.
Application-Specific Performance
Structured wall HDPE systems are well suited to:
- Stormwater conveyance
- Large-diameter gravity pipelines
- Manholes and inspection chambers
- Culverts in sensitive ground conditions
These systems are not intended to replace traditional HDPE pipelines, but rather to complement them where application demands exceed the practical limits of conventional solutions.
A System-Based Approach
Pipes, fittings, manholes, and jointing methods are designed to work together as a single system. This integrated approach supports long-term reliability and simplifies specification for complex infrastructure projects.
Through its partnership with Pianoboard Krah Pipes, Gradco SA provides access to structured wall HDPE technology supported by local expertise and application guidance.