Segmented HDPE Ducting. Built Around Your Requirements.

Negative Pressure Segmented Ducting

Reinforced for negative pressure applications.

• External strengthening ribs help maintain the designed cross-section under negative pressure.
• Dimensions, material thickness and reinforcement are selected to suit the ventilation duty.
• Nested segments reduce transport space, and the lower individual weight makes handling more manageable.
• Bolted construction allows the ducting to be dismantled, relocated and reused.

Available in 1 m, 2 m and 3 m lengths, with telescopic adjustable options.

Positive Pressure Segmented Ducting

Compact to transport. Convenient to handle. Built to your requirements.

• Customisable HDPE ducting for positive pressure applications.
• Segments nest together for compact transport and bolt together on site.
• Reduces freight space compared with assembled ducts, and keeps individual components lighter and easier to handle.
• The bolted design allows sections to be dismantled, relocated and reused as your ventilation layout changes.

Available in 1 m, 2 m and 3 m lengths, with telescopic adjustable options.

Segmented Bends

Follow the route your installation requires.

• Changes in direction while retaining the transport and assembly advantages of sectional construction.
• Select the angle and bend radius to suit your duct route, available space and adjoining sections.

Available in 22.5°, 30°, 45°, 60° and 90°, with various bend-radius options for positive and negative pressure applications.

Low-Profile Oval Ducting

Airflow where headroom is limited.

• An option where round ducting will not fit the available clearance.
• The flattened profile allows the duct to sit closer to the roof, preserving space for people, vehicles and equipment below.
• Shape-supporting construction: Rigid HDPE segments and external ribs help maintain the designed cross-section.
• Matching bends and fittings: Straight and curved sections can be configured around the route and available space.
• Compact transport: Segments nest and stack on pallets for delivery.
• Bolted, reusable design: Flanged joints allow sections to be dismantled, relocated and reassembled.

3 m ID Split Polyduct

A split-shell HDPE duct configuration with a 3 m internal diameter. Discuss section lengths, connection details and site assembly requirements with Polyline.

Ø2.4 m Fabricated Split Polyduct

A fabricated split-duct example with a stated diameter of 2.4 m. Discuss the required bore, section arrangement and installation clearances.

Hunter Street — Sydney Metro

A project example supplied for Sydney Metro at Hunter Street, Sydney: modular HDPE Polyduct sections assembled on site into a stacked, vertical arrangement. Discuss whether a similar configuration suits your shaft or vertical-rise application.