Glass Reinforced Polyester/Epoxy Pipes (GRP/GRE)
Filament Wound Piping
Filament Wound GRP/GRV Piping use thermosetting polyester & vinyl ester resin as the matrix, and glass fiber and its products as the reinforced materials, and are formed through the Computer numerical computer controlled winding process.
I. Product performance features
Corrosion resistance: good resistance to water, acid, alkali, and salt of general concentrations, and various oils and solvents.
Light weight: excellent physical properties, lightweight, high strength: gravity -1.9, 1/4 weight of ductile iron, 1/10 weight of steel, while the tensile strength is close to steel, up to 400MPa.
Long, effective service-life materials, up to 50 years.
Smooth inner walls, absolute roughness of 0.0084, the flow rate through pipes is 15% to 20% higher than other pipes of the same diameter.
Ease of joining, high construction efficiency, reducing installation time.
High technology design, Tight & efficient joints design, no wall scaling, no secondary pollution to water quality.
II. Wide application areas
Due to the high cost performance of GRP/GRV Piping, their applications areas are very wide, and they have been widely used in electric power, environmental protection, municipal construction, petrochemicals, marine vessels, and other areas.
III. Product specifications
◆Diameter: DN15 - DN5000 mm;
◆Pressure Rating: 0.1 - 2.5Mpa;
◆Stiffness Class (N/m²): SN2500 - SN15000;
◆Standard length: 6m,12m;
Other design pressure, stiffness, non-standard length of pipes can all be customized.
IV. Connection:
O-ring seal bell and spigot(with & without key-lock), Adhesive bonded, Flange, Hand lay-up, etc.
V. Standard:
AWWA M45 Manual of Water Supply Practices Fiberglass Pipe Design
ANSI/AWWA C950 Glass Fibre Reinforced Thermosetting Resin Pressure
ASTM D 2310 Standard Classification for Machine-Made "Fibreglass" (Glass-Fibre-Reinforced Thermosetting-Resin) Pipe
ASTM D2996 Standard Specification for Filament-Wound “Fiberglass”(Glass-Fiber-Reinforced Thermosetting-Resin) Pipe
ASTM D3517 Standard Specification for “Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin) Pressure Pipe
ASTM D3839-2002 Standard Guide for Underground Installation of “Fiberglass” (Glass-Fiber Reinforced Thermosetting-Resin) Pipe
ISO 10639 Plastics piping systems for pressure and non-pressure water supply-Glass reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin
ISO 14692 Petroleum and natural gas industries-Glass-reinforced plastics (GRP) piping
BS 5480 Specification for glass reinforced plastics (GRP) pipes joints and fittings for use for water supply or sewerage
CSA Z662 is the Standard for the use of plastic pipe in Canadian oil and gas pipeline systems.
These revisions include the following:
- RCP Requirements for PE pipe,
- MRS Design Equation and PE 100,
- HDB Design Factor of 0.45,
- Plus Performance PE materials,
- CRS Methodology,
- Polyamide Materials and
- Reinforced Thermoplastic Pipe:Material of the pipe might be Polyethylene (PE), Polyamide-11 or PVDF and can be reinforced with Aramid or Polyester fibre.
GRP/GRV Process Pipeline have good capacity of energy saving, because it have smooth Internal Wall which roughness≤0.0084. Therefore, compare with traditional pipe, we can choose smaller diameter pipe or lower power pump to transmit same flow. It also provides excellent corrosion resistance, long life, few maintenance cost. And it will not crack for cold medium and weather.
I. GRP/GRV process pipeline characters:
High flow rate.
Corrosion resistance: It is excellent for many chemical applications include strong acids, chlorine, salts and oxidizing agents that corrode transitional metal pipe.
Good heat and cold temperature resistance: from -40°C to +150°C.
Good insulation, thermal conductive and transparent property.
Long life, up to 50 years.
Light weight and high strength.
Non-toxic : can be used for portable water.
Pressure resistant: pipes and fittings are designed and fabricated according to the process requirement. Pressure test will be done at 1.5 times required pressure.
Ⅱ. GRP/GRV process pipeline Specifications
Diameter: DN40-DN5000mm;
Pressure class: 0.6MPa, 1.0MPa, 1.6MPa, 2.0MPa, 2.5MPa;
Stiffness class: SN2500,SN5000, SN7500, SN10000 (N/m²);
Standard length: 6m, 12m;
Joint style: O-ring seal bell and spigot(with & without key-lock), Adhesive bonded, Flange, Hand lay-up, etc.
Ⅲ. GRP/GRV process pipeline Executive Standard:
ANSI/AWWA C950 Fiberglass pressure pipe
ASTM D3517 Standard Specification for Fiberglass (Glass-Fiber-Reinforced Thermosetting-Resin) Pressure Pipe
ASTM D2996 Standard Specification for Filament-Wound Fiberglass (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe
ISO 10639 Plastics piping systems for pressure and non-pressure water supply — Glass reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin
ISO14692 Petroleum and natural gas industries – Glass-reinforced plastics (GRP) piping
ASME B31.3 Process Piping
RP/GRV serves as internal pressure conveying pipe, the polyurethane, etc material serves as central insulator layer; GRP & Polyethylene pipe serves as the external protection layer. The excellent advantage for the polyurethane interlayer are cold resistant, heat insulation, light weight, big adhesive area with the outer protection pipe, uniform load transferring, good impact resistant, etc.
I. FRP Insulating Piping Characters:
Lightweight, high strength, convenient transportation, installation and maintenance, the heavy lifting equipment is not required.
Excellent hydraulic performance, smooth inner surface, small resistances for fluid, save the cost of pumping.
No fouling on the inner surface, through long-time use, the smooth inner surface also can be kept.
Low thermal conductivity, λ=0.26W/(m.k), excellent insulation properties, the temperature drop less than 0.5℃/km.
Good chemical resistance and long life time can up to 30 years.
Prefabricated insulation layer, saving installation time and cost than fabricated on the construction site.
Ⅱ. FRP Insulating Piping Applications:
Thermal spring delivery pipe;
City and factory heating system;
Other heat medium feed pipe;
Ⅲ. FRP Insulating Piping Specifications:
Diameter: DN50-DN2000mm;
Pressure rating: 0.6MPa, 1.0MPa, 1.6MPa, 2.0MPa, 2.5MPa;
Connection: inner pipe use spigot and bell (bonded or O-ring type) or flange, the outer pipe use bond joint.
I. Reinforced Ring GRP/GRV Piping Characters:
Excellent chemical resistance;
Light weight;
High strength;
Easy installation and maintenances;
High flow rate;
Short construction period;
Low comprehensive investment;
Algae growth prevention;
Ⅱ. Reinforced Ring GRP/GRV Piping Applications:
Municipal, electricity, chemical industry, irrigation, water supply, drainage and sewage.
Ⅲ. Reinforced Ring GRP/GRV Piping Specifications:
Diameter: DN1000-DN5000mm;
Pressure class: 0.6MPa, 1.0MPa, 1.6MPa, 2.0MPa;
Stiffness class: SN5000, SN7500, SN10000, SN15000 (N/m²);
Joint style: O-ring seal bell and spigot(with & without key-lock), Adhesive bonded, Flange, Hand lay-up.
Ⅵ. Reinforced Ring GRP/GRV Piping Standards:
ANSI/AWWA C950 Fiberglass pressure pipe
BS7159 British Standard Code of Practice for Design and Construction of Glass Reinforced Plastic (GRP) Piping Systems for Individual Plants or Sites
ISO14692 Petroleum and natural gas industries – Glass-reinforced plastics (GRP) piping
ASTM D2996 Standard Specification for Filament-Wound“Fiberglass”(Glass-Fiber-Reinforced Thermosetting-Resin) Pipe
FGD Systems Dedicated GRP/GRV as its excellent performance, widely used in Wet Flue Gas Desulfurization Plants, such as: Spray pipeline, oxidation air tube, slurry pipeline, oxide air spray gun, strainer mesh, etc.
I. FGD Dedicated Piping Characters:
Excellent corrosion resistance: Use epoxy vinyl ester resin can resist sulfur smoke and acid-base liquid.
Good heat resistance: Use HDT=150℃epoxy vinyl ester resin，short-time heat resistance can reach 200℃.
Good wear resistance: Add abrasion resistant filler in resin, both to increase interlaminar bonding force, but also reduces the internal and external roughness coefficient, especially in 15%-20% solid content slurry.
Thermal shock resistance: avoid fracture, damage and delamination due to thermal shock under extreme changes in temperature.
Winding process: Computer control winding process, greatly improve interlaminar adhesive properties.
Ⅱ. FGD Dedicated Piping Specifications:
Design pressure: PN2.5, PN6, PN10;
Working pressure: 0.5, 1, 2, 3bar;
Safety factor FOS: 1:6 or 1:10;
Temperatures: from +50°C to +200°C;
According to the following international standard: EN, ASTM, ASME, etc.
GRE Chemical-Industrial Pipeline use premium glass fiber glass as reinforced materials, epoxy resin as based materials, by computer control winding process, mechanical connected fiberglass reinforced piping.
I. GRE Chemical-Industrial Pipeline Characters:
• Long Service Life
• Low Life-Cycle Cost
• Retrofit Solution
• Easy to Install
• Light Weight
• Corrosion Resistant
Ⅱ. GRE Chemical-Industrial Pipeline Specifications:
Diameter: DN80-DN600mm & 3 inch-24 inch;
Length: 9m/12m;
Working Temperature: up to 100℃;
Pressure Rating: 1.6MPa-10.0MPa & 240 PSI-1500 PSI;
Ⅲ. GRE Chemical-Industrial Pipeline Applications:
Potable water, firewater mains, saltwater cooling, saltwater disposal, heating & cooling water systems and wastewater systems across the automotive, power generation, municipal, institutional and aerospace applications.
Ⅵ. GRE Chemical-Industrial Pipeline Standards:
ASTM D2996 Standard Specification for Filament-Wound Fiberglass (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe
API 15LR Specification for low pressure fiberglass line pipe and fitting
ASTM D5685 Standard Specification for Fiberglass (Glass-Fiber-Reinforced Thermosetting-Resin) Pressure Pipe Fittings
ASTM D4024 Standard Specification for Machine Made Fiberglass (Glass-Fiber-Reinforced Thermosetting Resin) Flanges
Ⅴ. GRE Chemical-Industrial Pipeline Connection: Thread, Adhesive Bonded, Bell/Spigot O-RING (with & without key-lock), Flanged, etc.
RE Marine & Offshore Pipeline, Using high quality epoxy resin as matrix and high strength glass fiber as reinforcement, and are formed onto a mold through the computer controlled winding process, after the final heat curing forming a stable performance of finished pipe and fitting.
I. GRE Marine & Offshore Pipeline Characters:
Durable and corrosion resistant: highly resistant to corrosion caused by saltwater, chemicals, residues and bacteria. Similarly, it resists external corrosion even in aggressive marine environments.
Light weight - Easy to install: weighs only a quarter that of steel of pipes and is easy to install without the need of heavy installation equipment.
Low Installation and Operating Cost: Installation costs are lower than those for carbon steel, resulting in comparable total installed cost when product costs are factored in. Lower operating costs, due to superior hydraulic performance, reducing energy costs.
Wide range of systems: offering a complete range of piping systems in a variety of diameters and pressure classes for many different applications. Piping systems are available in diameters up to 40 inch and standard lengths up to 40 ft.
No contamination: not rust or scale and is resistant to marine fouling. These features also contribute to the cost savings and reduced needs for maintenance.
Ⅱ. GRE Marine & Offshore Pipeline Applications:
Ballast, bilge, fuel, cleaning, ventilation, cooling, fireproof and other piping systems;
Ⅲ. GRE Marine & Offshore Pipeline Specification:
Sizes: 1.0 to 40 inch (DN25-DN1000mm);
Length: 30feet/9m, 40feet/12m;
Pressure rating: Maximum 50BAR/725PSI;
Working Temperature: Maximum 120℃/250℉;
Ⅵ. GRE Marine & Offshore Pipeline Standards:
IMO A.753 (18) “ship plastic pipe guide Guidelines for the Use of Plastic Pipes on Ships”
ISO-14692 “Petroleum and natural gas industries —Glass-reinforced plastics (GRP) piping”
UKOOA-1994 “Specification and recommended practice for the use of GRP piping offshore”
ASTM F1173 “Specification and recommended practice for the use of GRP piping offshore”
ASTM D2996 “Standard Specification for Thermosetting Resin Fiberglass Pipe Systems to Be Used for Marine Applications”
ASTM D2992 “Standard Practice for Obtaining Hydrostatic or Pressure Design Basis for “Fiberglass”(Glass-Fiber-Reinforced Thermosetting-Resin) pipe and fittings”
ASTM D1599 “Standard Test Method for Resistance to Short-Time Hydraulic Pressure of Plastic Pipe. Tubing and Fittings”
API 15LR “Specification for Low Pressure Fiberglass line Pipe and Fittings”
GRE Wear-Resistant Pipeline is a new generation polymer composite piping, which use GRE as outer layer, PU as inner layer. Outer layer not only can bear inner pressure, but also can resist external corrosion; the inner PU layer is a wear-resistant layer. Through the unique interface process, centrifugal casting process, the PU layer can firmly bonded on the inner surface of the outer GRE layer.
Polyurethane Elastomer（PU）is a multi-function high molecular synthetic material between rubber and plastic, which is excellent in mechanical property. It is much superior to common rubber in its tensile strength, elongation at break, fracture resistance. It keeps its high elasticity within a wide range of rigidity, so it is excellent in wear-resistance and mechanical shock resistance, and can be prescribed into various polyurethane formula system according to the actual application condition. It is now widely used as wear-resistant and erosion-resistant lining in the fields of power, coal, mine, building, chemical etc, which serves to transmit grinding particles and corrosive agents like coal powder, lime-ash, mineral powder, mortar, and aluminum liquid etc.
GRE Wear-Resistant Pipeline combine the advantages of GRE and PU, it is excellent in wear-resisting, aid resisting, alkali resisting, anti-scaling, radiation resistant, hydrolysis resistance, high elasticity, mechanical shock resistance and other comprehensive performances.
I. GRE Wear-Resistant Pipeline Characters:
Excellent corrosion resistance and prominent wear- resistance.
Less running resistance, excellent anti-scaling.
Good connection and controlled thickness of wear-resistant layer.
Light, convenient to transport and install, low cost.
Ⅱ. GRE Wear-Resistant Pipeline Applications:
Widely used in dredging, electric power, mining, coal, chemical industry to transport mud sand, coal power, ash mineral power, liquid aluminum and mud grinding particle materials and corrosive medium.
Ⅲ. GRE Wear-Resistant Pipeline Specifications:
Diameter: DN100 - DN600mm;
Length: 6m/12m;
Maximum Operating Temperature: 80 ℃;
Pressure Rating: 1.6MPa to 10.0MPa;
Connection: Thread, Bell and Spigot, Flanges, Plain-End joint, choosed according to design requirements.
Ⅵ. GRE Wear-Resistant Pipeline Standards
ASTM D2996 Standard Specification for Filament-Wound Fiberglass (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe
API 15LR Specification for low pressure fiberglass line pipe and fitting
BS EN 1465 Adhesive determination of tensile lap-shear strength of rigid-to-rigid bonded assemblies
GRE Membrane Pressure Vessels (MPV Membrane Housing) are made of high quality GRE and use an advanced winding process. MPV include high strength, smooth inner surface and durable shell.
Producing Process: Filament Winding→Cutting nap→Hydraulic test→Spray coating treatment→Package.
Quality Assurance:
100,000 times cycle test;
Burst test with 6 times of its operating pressure;
100% QA test with 1.25 times stage elevation of hydraulic pressure;
100% QA inspection and cleaning before final packaging and delivery to customers.
I. GRE MPV Characters:
Excellent and reliable internal quality;
Excellent insulation properties;
Outstanding corrosion resistance;
Safe and reliable design;
High-quality supporting components;
Ⅱ. GRE MPV Applications:
HYDRANAUTICS; DOW; GE; FLUID SYSTEM; TORAY; CSM; VONTRON; BDX and other international standard membrane elements.
Ⅲ . GRE MPV Specifications:
4 inch Length customers can request the choice 1，2，3，4（core）
8 inch Length customers can request the choice 1，2，3，4，5，6，7（core）
Operating Pressure: 300psi(2.1MPa), 450psi(3.1MPa), 600psi(4.1MPa), 800psi(5.5MPa), 1000psi(6.9MPa) , 1200psi(8.3MPa).
Working Temperature: from -10℃ to +50℃.
Ⅵ. GRE MPV Standards
ASME Boiler & Pressure Vessel Code (BPVC)
NSF Standard 61
