GRP Pipe

Our GRP pipes are manufactured in a diameter range of DN50 to DN4000 and a pressure range of PN1 to PN32 bar (up to 40 bar with special design). As the first and only manufacturer in Turkey capable of producing GRP pipes with three different technologies, SUPERLIT offers standard pipe lengths of 6m and 12m, but can also produce pipes in custom lengths depending on transportation possibilities. GRP pipes are made from composite materials consisting of flexible glass fiber-reinforced thermoset resin and silica sand. GRP pipes are preferred for clean water, drinking water, irrigation, hydroelectric power plants, sewage, and industrial applications due to their reliability and long service life.
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Diameter Range

DN50 - DN4000

PN1 – PN32 bar (up to 40 bar with special design)

SUPERLIT is Turkey's first and only GRP pipe manufacturer capable of producing GRP pipes using three different technologies.

DISCOVER OUR PRODUCTION TECHNOLOGIES

SUPERLIT is one of the leading companies in the GRP pipe industry. GRP (Glass Fiber Reinforced Polyester) pipes are known for their superior performance, durability, and wide range of applications. These pipes are used in various applications, from water transmission lines to industrial applications, offering numerous advantages.

What is GRP Pipe?

GRP pipes are made from composite materials consisting of glass fiber reinforced thermoset resin and silica sand. This material combination provides the pipes with high strength, corrosion resistance, and long service life. GRP pipes can be used in both underground and above-ground applications, meeting various industrial needs.

Applications of GRP Pipes

  • Drinking Water and Clean Water Transmission Lines: GRP pipes perform excellently in drinking water and clean water transmission, preserving water quality with their hygienic and corrosion-resistant structure.

  • Irrigation Systems: Used in main transmission and distribution lines in agriculture, enhancing efficiency.

  • Stormwater and Drainage Lines: GRP pipes offer effective solutions in stormwater and drainage systems.

  • Sewerage Lines: Provide a long-lasting solution in sewer systems with resistance to chemicals and corrosion.

  • Industrial Wastewater Lines: Safely used in chemical plants and industrial wastewater systems.

  • Submarine Pipelines: Deliver reliable performance in water intake, discharge lines, and diffusers.

  • Power Plants: Used as transmission and penstock pipelines in hydroelectric power plants.

  • Jacking and Trenchless Technologies: An excellent solution for trenchless technologies and relining pipelines.

Advantages of GRP Pipes

  • Long Service Life: Provides high durability with a minimum service life of 50 years.

  • Smooth Inner Surface: Offers efficient water transmission with low hydraulic losses and minimal friction.

  • Secure Connections: Ensures leak-tightness with Full-face® integrated elastomeric gasket couplings.

  • Lightweight: Weighs one-fourth of steel pipes, one-fifth of ductile iron pipes, and one-tenth of concrete pipes, facilitating easy transportation and installation.

  • Corrosion Resistance: Does not corrode and operates over a wide pH range.

  • Easy Installation: Allows for quick and easy installation without requiring special equipment.

  • Environmentally Friendly: Can be recycled at the end of its service life and does not harm the environment.

Quality and Safety with SUPERLIT GRP Pipes

SUPERLIT produces GRP pipes according to the highest quality standards. Manufactured according to EN, ISO, ASTM, and AWWA standards, our pipes are adaptable to all types of projects with a wide range of diameters and various pressure classes.

SUPERLIT, a leader in the industry, offers reliable and durable solutions for your GRP pipe needs, with innovative production technologies and a customer-focused service approach.

Applications:

SUPERLIT GRP Pipes are used in a wide range of underground and above-ground piping systems:

  • Drinking water and clean water transmission lines

  • Main transmission and distribution lines for irrigation

  • Stormwater and drainage lines

  • Sewerage lines

  • Industrial wastewater transmission lines

  • Submarine pipelines, water intake, discharge lines, and diffusers

  • Piping lines for chemical plants

  • Circulation lines for power plants

  • Transmission and penstock pipelines for hydroelectric power plants

  • Jacking and relining (sliplining) pipelines

Advantages:

  • Long Service Life: Designed according to international standards to last a minimum of 50 years, with very low operating and maintenance costs.

  • Smooth Inner Surface: Excellent smooth inner surface that reduces hydraulic losses and keeps friction loss to a minimum throughout the service life.

  • Secure Connections: Leak-proof full-face® integrated elastomeric gasket couplings with a flexible connection method.

  • Lightweight: Approximately 1/4 the weight of steel pipes, 1/5 the weight of ductile iron pipes, and 1/10 the weight of concrete pipes, facilitating easy transportation and installation.

  • Corrosion and Chemical Resistance: Does not corrode as it is not made from metallic materials, operates over a wide pH range, is unaffected by electrical currents, and does not require cathodic protection.

  • Water Hammer Absorption Capacity: Absorbs 40% more pressure increases caused by water hammer compared to metal pipes.

  • Environmentally Friendly: Made from recyclable materials that do not harm the environment at the end of their service life.

  • TS EN 1796 (water supply)

  • TS EN 14364 (wastewater applications)

  • ASTM D3262 (wastewater applications)

  • ASTM D3754 (wastewater applications)

  • ASTM D3517 (water supply)

  • TS EN 1796 (water supply)

  • TS EN 14364 (wastewater applications)

  • ASTM D3262 (wastewater applications)

  • ASTM D3754 (wastewater applications)

  • ASTM D3517 (water supply)

  • AWWA M45 (design and installation)

  • AS 3571.1 (wastewater applications)

  • AS 3571.2 (clean water applications)

  • AS/NZS 2566.2 (installation)

GRP Pipe Technical Specifications

Flow Rate

The recommended maximum flow rate for standard GRP pipes is 4 m/s. Pipes allowing higher flow rates can be designed with special customization.

Flow Coefficient

Values to be used for hydraulic calculations with SUPERLIT GRP pipes:

  • Hazen–Williams flow coefficient: C = 150

  • Manning coefficient: n = 0.009

  • Colebrook–White coefficient:

    • For pipes produced by continuous filament winding method: k = 0.029 mm

    • For pipes produced by centrifugal casting method: k = 0.012 mm

UV Resistance

The performance of GRP pipes is not adversely affected by UV rays. It is normal to observe color changes on the surface that do not affect the strength.

Poisson's Ratio

The Poisson's ratio for standard GRP pipes, suitable for engineering calculations, ranges from 0.22 to 0.29.

Temperature

The service temperature range for standard GRP pipes is -40°C to +35°C. Special pipe designs are available for service temperatures up to 50°C.

Thermal Expansion Coefficient

The thermal expansion coefficient for axial elongation and contraction of SUPERLIT GRP pipes is in the range of:

24 to 30 x (1/106)mm/mm/°C.

Pipe Diameter Table

SUPERLIT is the only pipe manufacturer in Turkey capable of producing glassfiber reinforced polyester (GRP) pipes using three different technologies: 'Continuous Filament Winding', 'Centrifugal Casting', and 'Helical Filament Winding'.

SUPERLIT is a subsidiary of KARAMANCI HOLDING.

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