Scope of Work
Our scope covered the supply, installation, and testing of steel and HDPE piping systems, spools, valves, and supports along an 8.5 km overland alignment.
Key activities included:
- Use of our in-house Pipe Bending Machine (Model PBMS/20″) to perform precise cold field bends of high-strength steel piping.
- Installation of carbon steel and UHMWPE-lined piping with flanged connections.
- On-site welding, bolting, and hydrostatic testing in accordance with Australian Standards.
- Structural installation of pipeline sleepers, supports, and anchor plinths.
- Integration with existing TSF pipeline infrastructure and completion of tie-in works.
Technology in action – The Pipe Bending Machine advantage
The D&S Pipe Bending Machine provided a safe and efficient solution for handling steel pipes up to 20″ diameter and high-strength grades (X60–X70), with wall thicknesses up to 45 mm.
Benefits included:
- Efficiency – faster installation with reduced manual handling.
- Precision – consistent bends with minimal deformation.
- Safety – advanced hydraulic controls and built-in safety systems.
- Adaptability – compatible with both coated and uncoated pipes.
Project outcome
The overland tailings pipeline was delivered in just 14 weeks under stringent quality and safety standards. The result is a durable, efficient pipeline system compliant with BHP’s rigorous SHEC standards, supporting ongoing operational performance at Carrapateena.
Skills/specialties demonstrated
- In-house cold field bending capability — the PBM (Model PBMS/20″) let D&S bend high-strength steel pipe on-site rather than relying on pre-fabricated bends or an external bending subcontractor, which is the core differentiator in this case study
- Materials handling range — comfortable working across both carbon steel and UHMWPE-lined pipe, and both coated and uncoated pipe, in the one scope
- Certified welding, bolting and testing — on-site welding and hydrostatic testing to Australian Standards
- Civil/structural pipeline works — sleepers, supports and anchor plinths, not just the pipe itself
- Brownfield integration — tying new pipeline into existing TSF infrastructure without disrupting the live system
- Safety-led equipment operation — hydraulic controls and built-in safety systems on the PBM reducing manual handling risk on a large-diameter, thick-wall pipe job