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Stormwater Pipes & Culverts
PolyFlow Pipes and Culverts provide efficient stormwater management with superior adaptability and durability, outperforming concrete in flow and long-term strength.
why polyflow is the future
of stormwater solutions
-
Engineered for High Water Flow.
Corrugated design enhances water flow while maintaining structural integrity under heavy loads. -
Adaptable to Varying Terrain.
Simplifying installations and ensuring a reliable, long-term drainage solution. -
Minimise Downtime with HDPE.
Flexible, durable, for large-scale operations with long-term reliability. -
Outperforming Concrete in Every Way.
Resistant to chemical degradation, outlasting concrete and ensuring long-term durability in the harshest conditions. -
Lighter, Easier, Safer Installation.
Lightweight design enables faster, easier installation, cutting time and labor costs compared to heavier options. -
Unparalleled Durability and Cost Efficiency.
Durable, corrosion-resistant polypropylene drainage solutions for tough conditions.
technical highlights
| Stockcode | Nominal Diameter (mm) | Minimum Mean Pipe Inside Diameter | Nominal Length (m) | Approximate Pipe Mass (kg/m) | Stiffness (N/m/m) |
|---|---|---|---|---|---|
| PFLOW0225 | 225 | 216 | 6 | 3.0 | 8,000 |
| PFLOW0300 | 300 | 292 | 6 | 5.0 | 8,000 |
| PFLOW0375 | 375 | 361 | 6 | 8.0 | 8,000 |
| PFLOW0450 | 450 | 432 | 6 | 12.0 | 8,000 |
| PFLOW0525 | 525 | 515 | 6 | 16.5 | 8,000 |
| PFLOW0600 | 600 | 584 | 6 | 21.0 | 8,000 |
| PFLOW0750 | 750 | 723 | 6 | 44.0 | 8,000 |
| PFLOW0900 | 900 | 864 | 6 | 33.0 | 8,000 |
| PFLOW1050 | 1050 | 1008 | 6 | 58.0 | 8,000 |
| Property | Units | Value |
|---|---|---|
| Circumferential Flexural Modulus (2mm/min) | MPa | >1000 |
| Density | kg/m3 | 960 |
| Pipe Ring Bending Stiffness | N/m/m | >8000 |
| Tensile Yield Stress (50mm/min) | MPa | 25 |
| Poisson's Ratio | | 0.40 |
- Diameter Range
PolyFlow corrugated polyethylene pipes range from DN225 to DN1050. - Lengths
PolyFlow pipes are 6m long and can be easily cut and rejoined on-site. - Chemical Resistance
PolyFlow pipes and fittings resist corrosion, ensuring durability in harsh underground drainage. - Stiffness
PolyFlow pipes meet AS/NZS standards with SN8 stiffness, resisting soil, water, and construction pressures.
Corrugated pipe join diagram
EPDM or SBR gaskets comply with the requirements of AS1646 "Elastomeric seals for waterworks purposes".
joints
Polyflow corrugated structured wall polyethylene pipes incorporate an advanced spigot and socket elastomeric joint, designed to meet the requirements set by AS/NZS5065. Each pipe is supplied with a standard elastomer gasket for simple and effective jointing. Lubrication of the gasket is required for jointing to the spigot witness mark.
The elastomeric gasket is positioned in the second last through near the spigot end and compresses to create a seal as the spigot is inserted into the socket. This innovative design enables installers to cut the pipe at any point along its length and still effectively form a joint.
Key Features & Benefits
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Simplified Connection System.
The design incorporates an effective rubber ring joint system that facilities easy assembly and secure jointing. Designed to meet strict Australian Standards requirements for effective sealing and resistance to root intrusion, the seal simplifies installation. -
Long Lasting Performance.
The durability of polythylene is a key asset, providing it the ability to resist heavy handling and installation stresses without compromising its integrity or performance. This ensures that the product remains effective over long periods, even in demanding conditions. -
Eco-Friendly Materials and Manufacturing.
PolyFlow polyethylene corrugated pipes are 100% recycled and recyclable and a low embodied energy, contributing significantly to it environmental benefits. Choosing materials with lower embodied energy helps reduce the overall carbon footprint of Construction projects, aligning with sustainability goals and regulations. -
Australian Made.
Australian made products guarantee that the products meet strict Australian standards for quality. Reflecting a commitment to supporting local industries and reducing environmental impacts. -
Lightweight design.
Polythylene corrugated pipes are lightweight, making them easy to handle, transport, and install. This makes installation faster and more cost-effective.
Design & Install
Minimum Cover Heights
- Minimum pipeline cover shall be specified to:
- ensure surcharge loadings, e.g. traffic and construction equipment, are not concentrated but instead are distributed over an adequate area.
- give sufficient clearance to overlying layers that require heavy mechanical compaction, e.g. road sub-bases; and
- ensure the pipe or side support is appropriate, having regard to the proposed land use and any foreseable lowering of finished surface levels.
Subject to variation by the relevant asset owner. Under cultivated agricultural land H should not be less than 0.6m. Railway crossings shall comply with AS 4799.
AS/NZS2566.1 "Buried flexible pipelines - structural design"
| Location | Min Height of Cover (m) |
|---|---|
| Not subject to vehicular loading | 0.30 |
| Subject to vehicular loading | |
| -- Not in roadways | 0.45 |
| -- In sealed roadways | 0.60 |
| -- In unsealed roadways | 0.75 |
| Pipes in embankment conditions or subject to construction equipment loading | 0.75 |
Testing & Commissioning
Testing and commissioning methods for corrugated structured wall polyethylene pipe system are generally in accordance with AS/NZS2033 "Installation of polyethylene pipe systems" and AS/NZS2566.2 "Buried flexible pipelines - Installation". The standards specify the requirements for the field-testing and commissioning of buried flexible pipelines with structural design in accordance with AS/NZS2566.1 "Buried flexible pipelines - Design".
Life Expectancy
When installed and operated in accordance with the manufacturers guidelines this pipe system can be expected to perform well in excess of 50 years.
Technical Support
Polyflow's in-house engineering team combines specialist technical knowledge, creative thinking and on-the-job experience, to offer our clients a range of project planning and consultation services. From recommendations on product innovations, to crafting complex end-to-end solutions, our collaborative approach bridges the gap between contractos, authorities and suppliers. The only Australian provider able to offer clients the full product suite, Polyflow offers unbiased, strategic insights that always consider the bigger picture.
We work with contractors, asset managers, local councils and government, developers and other pipeline professionals to specify bespoke product solutions. By engaging our team of engineers, you gain access to unparalleled product knowledge and expertise.
Installation
Installation methods for the Polyflow corrugated structured wall polyethylene pipe system are generally in accordance with AS/NZS2033 "Installation of polyethylene pipe systems" and AS/NZS2566.2 "Buried flexible pipelines - Installation". The standards specify the requirements for the installation of buried flexible pipelines with structural design in accordance with AS/NZ2566.1 "Buried flexible pipelines - Design".
The key to ensuring the pipes are installed successfully lies in selecting and properly compacting the embedment material, which is in direct contact with the pipes. This material should be granular and easy to compact, with crushed rock, aggregate, and graded sand being common choices.
Installation Training
Polyflow's in-house engineering team engineering team provides a range of training, and technical support services. Polyflow can provide installers with important information relating to the correct handling, installation, testing, maintenance and repair of Polyflow pipe systems and products.
