Grating FRP Australia

Manhole Covers

Fibreglass Reinforced Plastic (FRP) Manhole Covers

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Our FRP manhole covers have the following properties:

  • Our FRP manhole covers are made from composite materials such as glass fiber, resin, quartz and corundum.
  • We apply wear-resistant and climate-resistant materials on the top surface layers so that the product can be used under very harsh conditions.

Kinext Manhole Cover Catalogue - PDF (4.2MB) :



  • We can custom make any man hole design, pattern or company logo on the surface of the covers giving a personal finish to your manhole cover project.

Application Temperature Scope

The materials used to manufacture the manhole covers are important, that is why we only use quality materials. The main material that contributes to the product application is the non saturated polyester resin. It belongs to the thermosetting resin, the performance after its solidification is as follows:

  • Longitudinal strength:250-600Mpa
  • Compressive strength:300-600Mpa
  • Stretch modulus:25-35Gpa
  • Break elongation ratio:1.3-10.0%
  • Bending strength:700-1400Mpa
  • Curving module:25-35Gpa
  • Poisson-ratio:0.35
  • Relative density:1.11-1.15
  • Water-absorptive(24h):10-30mg
    • C250(can load 25tons) D400(can load 40tons)
      • Volume resistivity.1*(1012-1014)cm
      • general application temperatures in -40~80

The Service Life

  • Under normal working conditions, service life should be 50 years.
  • Our manhole covers can withstand more than 2 million fatigue shocks.

View Manhole Cover Specifications

Manhold Cover

  • Diameter: 600(mm)
  • Load Ability: D400
  • Approx. Weight: 50kg

Manhold Cover

  • Clear Openess 600 (mm)
  • Load Ability: D400
  • Approx. Weight: 58kg

Manhold Cover

  • Clear Openness 600*600 (mm)
  • Load Ability: C250
  • Approx. Weight: 61kg

Manhold Cover


  • Size: 400*420*30 (mm)
  • Load Ability: B50
  • Approx. Weight: 18.6kg



Unit 4/33 Thornbrough Road
Phone: 08 9584 2500
Fax: 08 9581 8897

A.B.N 52989384187

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