Ag Pipe
Shop our range of agricultural drainage pipe (ag pipe) — flexible perforated polyethylene pipe for subsurface drainage systems in gardens, lawns, agricultural fields and civil construction applications across Australia.
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Drain Coil – Slotted and Socked AG-Pipe 65mm in 20m and 200m Rolls
Price range: $80.00 through $775.00Select options This product has multiple variants. The options may be chosen on the product page -
Slotted and Socked Ag-Pipe 100mm available in 20m, 50m and 100m rolls
Sale! Price range: $125.00 through $550.00Select options This product has multiple variants. The options may be chosen on the product page
Agricultural Pipe (Ag Pipe) — Buying Guide
What Is Ag Pipe?
Agricultural pipe (commonly known as ag pipe, slotted pipe or agricultural drain) is a flexible corrugated polyethylene pipe with perforations (slots or holes) along its length, designed to collect and transport subsurface water away from gardens, lawns, agricultural land and building foundations. When installed underground in a gravel-lined trench, ag pipe collects groundwater and directs it to a suitable outlet, preventing waterlogging, improving soil drainage and protecting foundations from water damage.
Common Applications
- Garden and lawn drainage — prevents waterlogged lawns and garden beds; essential for clay-heavy soils with poor natural drainage
- Retaining wall drainage — installed behind retaining walls to relieve hydrostatic pressure and prevent wall failure
- Agricultural field drainage — subsurface drainage systems to improve soil trafficability and crop production on heavy soils
- Building subfloor drainage — installed around building footings to prevent moisture buildup and protect concrete slabs
- Sports field drainage — provides rapid drainage for ovals, golf fairways and sports grounds to improve playing surface conditions
Types of Ag Pipe
- Slotted ag pipe (bare) — standard unfiltered perforated pipe; use in gravel-lined trenches or with sock filter
- Sock-wrapped ag pipe — pre-wrapped in geotextile filter sock to prevent soil ingress; easier to install in sandy and silty soils where bare pipe would clog
Installation Tips
Install ag pipe in a trench lined with coarse gravel (10–20mm drainage aggregate). The pipe should be laid with perforations facing down or to the sides to collect rising groundwater efficiently. Maintain a minimum fall of 1:200 along the pipe to ensure continuous drainage flow to the outlet. Wrap the trench in geotextile fabric before backfilling to prevent soil migration into the gravel layer. Install inspection pits at direction changes for maintenance access.
Frequently Asked Questions
What size ag pipe do I need?
For residential garden and lawn drainage, 65mm diameter ag pipe is typically adequate. For larger agricultural or civil applications, 100mm, 150mm or larger pipe is used. Consult a drainage engineer for complex systems.
How deep should ag pipe be installed?
For lawn and garden applications, 300–600mm depth is typical. For deeper root zone drainage or agricultural use, deeper installation of 600mm–1000mm or more may be required.
Order Ag Pipe Online — Australia-Wide Delivery
Order online for fast dispatch. We supply homeowners, landscapers and civil contractors across Australia with agricultural drainage pipe and accessories. Contact us for large project requirements.