Products

FRP & Dual laminate piping

Engineering, Manufacturing and Installation for Corrosive Environments

Fiber Reinforced Plastic (FRP) and dual laminate piping systems are widely used in industries where corrosion resistance, long service life, and low maintenance are critical. Applications can be found across the chemical industry, water treatment, energy, mining, and industrial gas handling.

At Plasticon Projects, FRP and dual laminate piping systems are approached as fully engineered solutions. From material selection and laminate design to on-site installation and commissioning, each phase is aligned with the specific mechanical, thermal, and chemical requirements of the process.

What Is FRP Piping?

FRP piping is a composite piping system made from resin matrices reinforced with glass fibers. Unlike metallic materials, FRP does not rely on coatings or linings for corrosion protection. Instead, corrosion resistance is built directly into the laminate through the selection of resins, reinforcements, and structural layers.

Key characteristics of FRP piping include:

Excellent resistance to acids, alkalis, and aggressive chemicals
Low weight combined with high structural strength
Long service life with minimal maintenance
Design flexibility for large diameters and complex routing

Because FRP is anisotropic, its mechanical behavior depends on laminate design and fiber orientation. This makes engineering and installation a critical part of achieving reliable long-term performance.

Dual Laminate Piping: Combining Chemical Resistance and Structural Strength

Dual laminate piping combines a thermoplastic inner liner, such as PVC, PP, PVDF or ECTFE, with an external FRP structural shell. The thermoplastic liner provides outstanding chemical resistance, while the FRP outer layer carries the mechanical loads.

This combination is particularly suitable for:

Highly aggressive chemicals
Elevated operating temperatures
Applications where pure thermoplastics lack sufficient strength

Dual laminate piping systems require careful engineering, especially at transitions, nozzles, and connections. Correct stress transfer between liner and structural laminate is essential to prevent long-term damage.

The Importance of Proper FRP and Dual Laminate Piping Installation

Many issues in FRP and dual laminate piping systems do not originate from material selection, but from installation practices that do not fully account for composite behavior.

FRP piping responds differently to loads, alignment, and thermal movement than steel. Misalignment during installation can introduce residual stresses that remain hidden during testing but may lead to cracks, flange leaks, or delamination during operation. Support philosophy, flange assembly, and installation sequencing all play a decisive role in system reliability.

For dual laminate piping, installation quality is even more critical. Improper handling or forced fit-up can damage the thermoplastic liner or compromise the bond between liner and structural laminate.

At Plasticon Projects, FRP and dual laminate piping installation is treated as a specialist discipline, supported by experienced supervisors, dedicated procedures, and close coordination between engineering and site execution.

On-Site Installation and Field Fabrication

Large-diameter piping systems, complex plant layouts, or restricted access often require on-site installation or field fabrication. Plasticon Projects has extensive experience with on-site manufacturing and installation of FRP and dual laminate piping systems, allowing optimal fit-up while minimizing transport limitations.

On-site activities include:

Controlled lamination and jointing under defined conditions
Integration with steel equipment and civil structures
Alignment control to avoid locked-in stresses
Installation tailored to operational and environmental conditions

This approach reduces installation risk and ensures that design assumptions are maintained during execution.

Typical Applications of FRP and Dual Laminate Piping

FRP and dual laminate piping systems are commonly used in:

Chemical processing plants
Scrubber systems and flue gas treatment
Water and wastewater treatment facilities
Industrial exhaust and ventilation systems
Mining and hydrometallurgical processes

In these environments, corrosion resistance and reliability are essential for maintaining operational continuity and controlling lifecycle costs.

A System Approach to Long-Term Reliability

Successful FRP and dual laminate piping systems are the result of an integrated approach. Engineering, manufacturing, and installation must be aligned with material behavior and process requirements. When this alignment is achieved, composite piping systems deliver predictable performance over decades of operation.

Plasticon Projects supports clients throughout the full project lifecycle, from early engineering and material selection to installation and commissioning, ensuring that FRP and dual laminate piping systems perform as intended in demanding industrial environments.

Looking for expert support in FRP or dual laminate piping?

Early involvement during design and installation planning can significantly reduce project risk and long-term maintenance exposure. A specialist review can help ensure that your piping system is engineered and installed for reliable, long-term operation.

Let's talk about how Plasticon can help you