CNPS Industrial Glass Reinforced Epoxy Pipes
- Resists chlorides, H₂S, CO₂, and produced water.
- Temperature rating −40°C to 93.3°C continuous.
- 60–75% lighter than carbon steel.
- Adhesive-bonded, threaded, or flanged joints.
What Are CNPS Glass Reinforced Epoxy Pipes?
CNPS GRE pipes are filament-wound composite pipes using glass fibers in an epoxy matrix to combat corrosion, scaling, and weight penalties found with steel. The problem in brine, CO₂/H₂S, and treated water service is rapid degradation and repaint cycles.
Our solution: ISO 14692-compliant GRE systems that hold dimensions for reliable joints, keep a smooth bore (C≈150) to stabilize pumping energy, and cut structural loads by up to 75% versus steel. Applications span offshore platforms and onshore terminals, desalination plants, district cooling, firewater, municipal/industrial water, and mining utilities—well within the ISO 14692 scope.
Our Product
CNPS offers a wide range of GRE and glass fiber composite materials products, including pipes, fittings and structural accessories for industrial and offshore operations.
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GRE Pipe FlangesThe precisely designed flanges are compatible with CNPS GRE pipes, ensuring leak-proof and long-lasting connections.
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GRE ElbowsA variety of elbows and bends are available to facilitate smooth direction changes in GRE pipe systems.
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GRE Joints and CouplingsSturdy and reliable joints that can quickly and safely connect GRE pipes, minimizing downtime.
Features & Applications Across Industries
From seawater and firewater to district cooling and produced-water lines, CNPS GRE piping maintains strength and flow without rust or cathodic protection. Configurable pressure/temperature classes, precise tolerances, and matched fittings streamline installation and closeout documentation.
Handles chlorides, CO₂, H₂S, brackish, and produced water without coatings—ideal for marine, terminals, and chemical duty.
Standard classes to 32 bar; high-pressure series available in select ranges up to ~50 bar/363 psi.
Light spools plus adhesive-bonded or threaded joints cut crane time and hot work, accelerating tie-ins.
ISO 14692 Parts 1–4 packages with hydrotest, CoC/CoA, and traceability to simplify QA closeout.
CNPS GRE Pipes for Onshore & Offshore Projects
Built for harsh water, seawater, and “sour” (H₂S) fluids, CNPS GRE pipes don’t rust and don’t suffer under-insulation corrosion. They often remove the need for coatings and cathodic protection, cutting maintenance and downtime. The bore is very smooth for steady flow, and the pipe is lighter, so supports and structures carry less load.
Typical uses include offshore topsides, onshore terminals, desalination intake/outfall, district cooling, firewater rings, municipal water, and mining utilities. Choose the pressure class you need (6–32 bar) and temperature rating up to 93 °C, then add color coding for easy line identification.
Custom Properties for Your Media & Duty
Give CNPS four basics—temperature (−40 to 93 °C), pressure class (6/10/16/20/25/32 bar), diameter (DN 80–1600 mm), and media—and we’ll tailor a GRE solution to your duty.
We match design to seawater/brackish, treated/potable, district-cooling, firewater, desalination intake/outfall, or mining utilities, turning your inputs into the right rating and thickness—less rework, quicker approvals, and a cleaner, on-spec install.
Why CNPS Leads in GRE Piping
We run ISO-aligned production with in-process OD/ID gauging and statistical process control, holding tight tolerances across runs. Standard pipe lengths 6–12 m and factory spooling/kitting simplify site logistics. Resin and glass systems are selected for your media and temperature window, with traceability, inspection reports, and hydrotest data to keep projects on schedule
Standard pressure classes are 6, 10, 16, 20, 25, and 32 bar (≈87–464 psi). Typical continuous temperature service is −40 °C to 93 °C. Always apply project-specific derating for temperature, cyclic duty, and chemical exposure.
Ideal for seawater, brackish water, firewater, district cooling, potable/industrial water, produced water, and CO₂/H₂S-laden utilities. Many mild acids/alkalis are compatible; strong oxidizers and certain solvents may require alternative resin systems or liners. For hydrocarbons, aromatics, or elevated temperatures, request a CNPS chemical-compatibility check before specification.
Primary system joints use taper-to-taper epoxy-bonded sockets with controlled bond gaps; typical cure windows are 8–24 hours, depending on adhesive and ambient conditions. Small-bore utilities can use threaded, while equipment tie-ins are supplied as flanged spools. Follow CNPS procedures for surface prep, dry-fit gauging, adhesive mixing, cure/hold times, and final hydrotest to ensure first-time fit.
