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FRP Launders and Gutters

FRP launder troughs and gutters are corrosion-resistant channels used to convey water or chemicals in treatment plants. In water/wastewater clarifiers, FRP launder troughs collect and direct effluent from overflow weirs. In chemical plants or on rooftops, FRP gutters safely drain acids, alkalis or wastewater without corroding. Made from FRP panels or pultruded sections, these launders are engineered for heavy loads and aggressive fluids.

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Key Features

  • Fiber-Glass Fabrication: High-strength FRP construction resists chemical attack.
  • High Load Capacity: Reinforced lamination with internal stiffeners and flanges for rigidity.
  • Custom Profiles: Flat-bottom, V-bottom, or with integrated weirs; lengths/angles as needed.
  • UV & Weatherproof: Gelcoated or UV-stabilized resin for outdoor exposure.
  • Low-Porosity Finish: Smooth interior prevents buildup of sludge or scale.
  • Cover Options: FRP or plastic covers to reduce evaporation/algae.

Benefits

  • Long Lifespan: No rusting or concrete cracking; lasts much longer in corrosive effluent service.
  • Reduced Maintenance: Self-supporting structure does not require painting or cathodic protection.
  • Efficient Flow: Precise fabrication ensures consistent channel flow and easy cleaning.
  • Light Installation: Sections bolt together on-site, minimizing downtime.

Applications

  • Clarifier Effluent Troughs: Circular or rectangular clarifier launders (weir troughs) in water plants.
  • Filter Drainage: Outflow channels under pressure filters or clarifiers.
  • Chemical Drains: Acid/alkali drainage in plating or chemical processing areas.
  • Building Rain Gutters: In corrosive environments (e.g. chemical plants) where steel gutters would fail.
  • Process Channels: Conveyors or troughs for wastewater and sludge lines.

Technical Specifications

  • Thickness: Typically 6–12 mm FRP lamina, thicker at flanges (150% thickness at corners as per AWWA).
  • Sizes: Custom widths (e.g. 300–1500 mm) and slope grades.
  • Load Ratings: Designed per EN 1090 or local codes for walkway loads if needed.

Unique Selling Points

  • Engineered Strength: Up to 50% stronger than standard panels due to multi-layer fiberglass.
  • Corrosion Resistance: Handles even seawater or acids without deterioration.
  • Seamless Designs: No welded joints that can fail; edges are continuously molded.
  • Integration: Can be fabricated with outlets, drains, and support flanges as needed.