DM Plastics & Steel

Windmill Columns, Pull-Rods & Accessories Built for Remote Conditions

Proven windmill systems, trusted by pastoral operators nationwide.

Our Range

Polpro Windmill Products for Every Bore Application

Designed in collaboration with contractors and pastoralists, our polypropylene (Polpro) windmill system extends service life and reduces maintenance on pastoral farm bores. Non-rusting polypropylene mill columns and pull-rods replace older steel systems using standard procedures. Designed to integrate with common windmill gear, these components reduce wear, simplify servicing and increase uptime. DM Plastics and Steel’s windmill system is engineered to deliver long-term reliability in remote and harsh environments.

Windmill Columns

Column Sockets

Rotolock Stabilisers

Pull-Rods

Adaptors & Top Adjuster

Selection Guide

Choosing the Right Windmill Components

If you’re unsure which combination suits your bore, call our team for product selection help.

Applications

Where Polpro Windmill Products Work Best

Technical Details

Windmill Product Specifications & Features

Windmill Columns

Column Sockets

Rotolock Stabilisers

Pull-Rods — Medium Depth

Pull-Rods — Heavy Duty (Steel Reinforced)

Pull-Rod Top Adjuster

Adaptors

Thread standards: Columns — BSP | Pull-rods — BSW

Industries We Serve

Windmill System Solutions Across Key Australian Industries

Rural & Agricultural

The Polpro windmill system is designed for pastoral and rural operations — extending bore service life and reducing maintenance in remote locations.

Irrigation

The Polpro threaded riser system is designed for pastoral and rural operations, connecting to irrigation systems seamlessly.

Supply & Delivery

Supplying Windmill Products Across Australia

DM Plastics & Steel supplies Windmill products nationally, right across Australia. Talk to us for current lead times and logistics to your region.

Why Choose DM Plastics

Why Pastoral Operators Trust DM Plastics Windmill Products

As a South Australian manufacturer with decades of experience in rural and agricultural water systems, we focus on reliable products, practical selection advice and straightforward field serviceability. The Polpro windmill system reflects that approach: corrosion-resistant materials, robust joins and seals, and components that install with standard procedures to keep your mill working with less fuss.

Got Questions?

Windmill Product FAQs

Can I purchase individual parts, or do I need a full system?

Components can be purchased individually as needed. Columns, sockets, stabilisers, pull-rods, adaptors and the top adjuster – to suit new installs, upgrades or repairs. Please refer to our catalogue for a complete list of products.

Use Medium Depth pull-rods to around 24 m (1/2″) or 36 m (5/8″). For deeper bores, choose Heavy Duty steel-reinforced pull-rods, which have been used to 60 m (1/2″) and 120 m (5/8″).
Fit the Pull-Rod Top Adjuster and fine-tune stroke height at the pitman arm with two spanners. The swivel connection also helps prevent bottoming breakage.
Yes — Rotolock stabilisers are available to suit 40mm, 50mm and 75mm BSP columns, with polyurethane options noted. They push on to centralise and steady the column.
Order BSP for columns and BSW for pull-rods. If you’re matching legacy parts, use our brass or stainless adaptors to convert between 1/2″ and 5/8″ threads as required.

Contact Us for Windmill System Recommendations

Contact us for windmill system recommendations tailored to your bore depth and equipment.

DM Plastics & Steel - catalogue and brochure download.