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GRP Manhole

GRP (Glass Reinforced Polyester) Manholes are advanced underground access solutions engineered for reliable inspection, maintenance, and monitoring of drainage and sewer systems. Manufactured using high-strength fiberglass and premium resin, these manholes offer excellent resistance to corrosion, chemical exposure, and ground movement. Lightweight yet robust, GRP manholes are easy to transport and install, even in difficult site conditions. Their seamless, watertight construction ensures long service life and minimal maintenance, making them an ideal replacement for traditional concrete or steel manholes in municipal infrastructure and industrial applications.

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Description

Features:

  • Excellent mechanical and chemical resistance
  • Lightweight yet extremely strong construction
  • Seamless, leak-proof, and watertight
  • Corrosion, abrasion, and freeze-thaw cycle resistant
  • Can be equipped with GRP ladder and funnel extension/reduction taper for safety and access flexibility

Applications:

  • Inspection and maintenance of sewers and drains
  • Ventilation shafts for utility lines
  • Access for sampling or monitoring pits
  • Municipal, industrial, and environmental infrastructure

Advantages:

  • Fast and easy installation, reducing site costs
  • Long-term resistance to corrosion and root intrusion
  • Reduced risk of leakage and ground water contamination
  • Customizable sizes and shaft heights for various site needs

Technical Specifications:

  • Design Standards: ASTM D3753 (Glass Fiber Reinforced Polyester Manholes), ASTM D2412 (External Loading), ASTM D695 (Compressive Properties), EN 1610 (Tightness), prEN 1538
  • Size & Dimensions: Available in multiple heights and sizes as per customer requirements
  • Material Used: ECR glass fibre reinforcement with isophthalic or vinyl ester polyester resin
  • Quality Standards: Manufactured and tested for mechanical strength, chemical resistance, and watertightness per industry and international standards

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