FRP Lining work

About FRP Lining work

• Substrates Lined: Mild steel tanks, concrete/RCC storage reservoirs, effluent treatment plants (ETP), pipelines, chemical reactors, scrubbers, and industrial floors.
• Thickness Range: Typically ranges from 2.5 mm to 6 mm (or more depending on structural and chemical resistance requirements).
• Reinforcement Materials: Uses chopped strand mat (CSM), woven roving, or surface tissue fiberglass combined with specialized polymer resins (such as Isophthalic Polyester, Vinyl Ester, Novolac, or Epoxy).

1. Surface Preparation:
   • Metal surfaces are abrasive-blasted (e.g., to Swedish Standard Sa 2 or Sa 2.5) to remove mill scale, rust, old paint, and oil, exposing a clean, rough profile for mechanical bonding.
   • Concrete surfaces are cleaned, ground, or prepared to standards like ICRI CSP 5 to open pores and repair pits or cracks.
2. Primer Application:
   • A compatible base primer or initial resin coat is applied to seal the substrate and maximize adhesion before the fiberglass layers go down.
3. Layering (Mat & Resin):
   • Successive layers of fiberglass mats (such as CSM 450) are laid down by hand lay-up or spray methods, each thoroughly saturated and rolled out to eliminate trapped air bubbles.
4. Topcoat & Finishing:
   • A resin-rich final topcoat or surface tissue coat is applied to provide a smooth, waterproof, chemical-resistant finish.
5. Curing:
   • The system is left to cure completely (ranging from 24 to 72+ hours at room temperature or forced cure) before being commissioned or exposed to chemicals.

• Corrosion & Chemical Resistance: Shields underlying metal and concrete from aggressive acids, alkalis, and wastewater.
• Crack Bridging: Spans micro-cracks and joint seams in concrete and steel structures without cracking under minor stress.
• Low Maintenance: Long service life with reduced downtime compared to traditional paint or thin-film coatings