Infrapipe Case Study
Downer
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Overview
Infrapipe supplied multiple DN3200 SN8 HDPE spiral wound pipes for a major culvert replacement project in Hawke’s Bay. The project involved replacing an existing culvert located deep within a natural sandstone crevice, requiring a lightweight and durable solution capable of overcoming difficult site access and installation conditions.
As the only manufacturer in New Zealand producing PE DN3200 pipes using advanced Krah technology, Infrapipe delivered a high-performance solution engineered specifically for large-diameter infrastructure applications. The lightweight nature of HDPE pipe simplified handling and installation on site while providing long-term durability, structural performance, and hydraulic efficiency.
Key Facts
- Pipe Medium: Culvert
- Pipe Size and SN Rating: 32m SN8 DN3200
- Product Type: Spiral Wound Pipe
- Material Used: HDPE
- Geographic Location: Hawke’s Bay
Solutions
The previous culvert was deep in a natural sandstone crevice 10 meters from the road level. As a solution, INFRAPIPE™ provided the necessary lightweight PE product.
- INFRAPIPE™ carried out static calculations to determine the required SN rating as well as supplied installation drawing.
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