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GRP Pipes

GRP Pipes

A Fibreglass Pipe is a composite product made of glass fibers embedded in or surrounded by thermosetting resin. Since the 1970s, fibreglass technology has evolved to enable its use as either the pipe material of choice or a feasible alternative across all end-markets, except gas transmission.

Fibreglass possesses physical qualities that make it a superior alternative: lightweight, durable, anti-corrosive, efficient carrier, and versatile.

Product Range

GRP Pipes are available in nominal diameters from 80mm to 4000mm, at pressure classes PN 3, 6, 10, 16, 20, and 25 bars (PN 20 and PN 25 up to ND 2000mm) with stiffness classes of 2500, 5000, 10000, and 12500 N/m². Suitable for both underground and above-ground installations.

Applications

Chemical processes, desalination, ducting and vents, geothermal, industrial effluents, irrigation, oil industries, potable water, power plant cooling, raw water, sewers, sea water intake and outfalls, slurry piping, storm sewers, water distribution, water transmission, and tubing and casing.

Standards

ASTM D-3262, ASTM D-3517, ASTM D-3754, AWWA C-950, AWWA M-45, and BS 5480.

Characteristics

Corrosion resistant, excellent strength-to-weight ratio, non-conductive, dimensionally stable, low maintenance costs, and flexible.

Construction

GRP pipe is a composite laminate of three layers:

  1. Inner liner — corrosion resistant
  2. Structure layer
  3. External layer — resin-rich

Raw Materials

  1. Resin
  2. Glass
  3. Silica Sand

Quality Control

Quality control testing includes careful checks for incoming raw materials, in-process manufactured products, and finished products — all per ASTM, BS, EN, and AWWA standards.

Joining Systems & Fittings

Several joining systems are available. Many permit angular deflection, while others resist longitudinal thrust forces. Common fittings: elbows, tees, wyes, flanges, reducers, and laterals.

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