GRP Fibreglass Pipes, Tubes, Ducting, Flanges & Fittings | Industrial Fibreglass Solutions NZ

GRP Fibreglass Pipes, Tubes, Ducting, Flanges & Fittings – Corrosion Resistant Solutions in New Zealand

Industrial Fibreglass Solutions (IFS) is a trusted supplier of GRP (Glass Reinforced Plastic) or FRP (Fibreglass Reinforced Plastic) fibreglass pipes, tubes, ducting, flanges, and fittings. Designed for demanding environments, our products deliver exceptional corrosion resistance, durability and cost savings when compared to traditional metal plastic or concrete alternatives.

Available in both round and square configurations, our GRP range meets a wide variety of pressure requirements — from low-pressure ducting or gravity systems to higher-pressure piping systems (common classes include PN3 to PN25 depending on diameter and application). We supply individual components as well as fully customised, built-up assemblies ready for installation.

Whether you’re upgrading wastewater infrastructure, handling aggressive chemicals in industrial processing, or installing efficient ducting, our fibreglass pipes, ducting and fittings are engineered to perform reliably in New Zealand’s challenging conditions — including coastal corrosion, seismic zones, and harsh chemical exposure.

Key Features of Our GRP Fibreglass Products

• Versatile Configurations — Round and square pipes/tubes/ducting in diameters from small bore to large (typically 25 mm to 3000 mm+), with custom lengths and wall thicknesses.
• Pressure Customisation — Options to suit low to medium pressure applications (e.g., gravity flow ducting up to higher-rated pressure pipes compliant with standards like AWWA C950, ASTM D3517, or equivalent).
• Complete Range of Fittings — GRP flanges, elbows, tees, reducers, wyes, and custom moulded fittings for seamless system integration.
• Flexible Supply — Buy individual pipes, fittings, or duct sections, or opt for pre-assembled systems including on-site installation support.
• Site-Friendly Solutions — Ideal for alterations, repairs to existing installations, relining, or new builds with minimal disruption.

Advantages of Choosing IFS GRP Fibreglass Pipes & Ducting

• Superior Corrosion Resistance — Our GRP/FRP pipes are contact molded and excel in resisting chemicals, acids, saltwater, sewage, and aggressive industrial effluents — perfect for New Zealand’s corrosive coastal and industrial environments. No rust, no pitting, no costly replacements.
• Lightweight Design — Up to 75% lighter than steel or ductile iron equivalents, reducing transport costs, crane requirements, and installation time/labor.
• Long Service Life — Proven 50+ year lifespan with minimal degradation, even in harsh conditions — significantly lowering long-term maintenance and replacement expenses.
• Low Maintenance — Smooth, resin-rich inner surface requires little to no cleaning or repairs compared to metal systems prone to scaling or corrosion.
• Efficient Flow Performance — The smooth bore minimises friction, reduces pumping energy costs, and maximises flow efficiency for fluids or air/gases.
• Versatile Across Industries — Trusted in water & wastewater treatment, industrial chemical processing, HVAC ventilation, agriculture, pulp & paper, mining, and more.

Common Applications in New Zealand Industries

Our fibreglass pipes and ducting systems are used where corrosion, weight, or longevity are critical:

• Water and wastewater treatment plants (intake/outfall lines, aeration, effluent transfer)

  

• Industrial process piping (chemical dosing, corrosive slurries, acidic drains)
• HVAC and ventilation ducting (corrosive fume extraction, coastal air handling)
• Agricultural and irrigation systems (durable, lightweight alternatives for remote sites)
• Repairs and upgrades to aging metal or concrete infrastructure
• Coastal and marine environments (resistant to saltwater and humidity)

Why New Zealand Projects Choose IFS GRP Solutions

In NZ’s unique conditions — from salty coastal air to aggressive industrial chemicals — traditional materials often fail prematurely. Our GRP products provide a proven, low-risk alternative with excellent chemical compatibility, easy handling, and compliance with relevant international standards (e.g., ASTM, AWWA, ISO equivalents for GRP pressure and sewer pipes).

Clients benefit from reduced project downtime, lower whole-of-life costs, and reliable performance backed by our expertise in custom fabrication and supply.

Frequently Asked Questions (FAQ)

What pressure ratings are available for GRP fibreglass pipes? We offer custom pressure classes to suit your needs, typically from low-pressure gravity/ducting up to PN15 working pressure, with surge capabilities per industry standards.

How do GRP fittings compare to metal in corrosive environments? GRP/FRP fittings offer full corrosion resistance inside and out, with no need for coatings or linings — unlike steel or cast iron, which degrade quickly in acids, chlorides, or wastewater.

Can you supply custom GRP ducting or square sections? Yes — we specialise in both round and square configurations, plus bespoke sizes, shapes, and fittings for unique project requirements.

Are your products suitable for wastewater and chemical applications in NZ? Absolutely. Our GRP systems are widely used in NZ water treatment, industrial drains, and corrosive process lines, with proven resistance to a broad range of chemicals.

How lightweight are GRP pipes compared to alternatives? Typically 1/4 to 1/5 the weight of steel — making handling, transport, and installation faster and safer, especially on remote or elevated sites.

Ready to Upgrade Your Project with Corrosion-Resistant GRP Solutions?

Contact Industrial Fibreglass Solutions today for expert advice, custom quotes or to discuss your specific requirements. Whether you need fibreglass ducting NZ, pressure-rated GRP pipes, or complete fittings packages, we’re here to help.

Let’s discuss how our GRP fibreglass pipes, tubes, ducting, flanges, and fittings can deliver long-term value to your New Zealand project.