Dual Laminated Pipe & Fittings

Overview

Dual laminated tanks are designed for storage of aggressive chemicals and corrosive fluids where both chemical resistance and structural strength are required. The tank construction consists of a thermoplastic corrosion barrier liner combined with a fiber reinforced composite structural shell.
This dual construction provides excellent resistance to chemical attack while maintaining structural stability under operating loads.

Applications

Dual laminated tanks are used in a wide range of chemical and industrial applications including:

  • Chemical storage systems
  • Acid and solvent storage tanks
  • Process tanks in chemical plants
  • Industrial wastewater treatment systems
  • Storage tanks for aggressive chemical solutions

Size & Operating Range

  • Capacity: 1 m³ to 300 m³
  • Diameter: Up to 6 m
  • Temperature Range:
    -20°C to +120°C
  • Design Pressure:
    Atmospheric to 1 bar

Tank Types

  • Vertical above-ground tanks
  • Horizontal above-ground tanks
  • Horizontal underground tanks

Material & Construction

  • Thermoplastic corrosion liner (UPVC, CPVC, PP, PVDF, ECTFE) selected based on stored chemical
  • Structural GRP composite shell designed for hydrostatic, wind, and seismic loads
  • Engineered bond between liner and structural laminate for load transfer
  • Optional UV-resistant external gelcoat for outdoor service

Outer Structure

  • Glass fiber reinforced thermoset composite (GRP / GRE)
  • Dual-layer construction: corrosion-resistant liner + structural composite shell
  • Filament wound or hand lay-up structural reinforcement

Key Advantages

  • Combines chemical resistance of thermoplastics with structural strength of GRP
  • Suitable for acids, alkalis, solvents, and aggressive chemicals
  • Lower thermal expansion compared to pure thermoplastic piping
  • Lightweight construction
  • Corrosion-free and long service life