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Introduction to FRP Piping

May. 13, 2021

Introduction to FRP Piping

The complete form of FRP is fiberglass reinforced plastic, which is a composite material composed of a fiber-reinforced polymer matrix. Therefore, FRP pipes are made of FRP materials through contact molding or fiber winding. Various types of resins, such as thermosetting polyester, epoxy, phenolic resin, etc., are used to obtain the final product with specific FRP pipe properties. As a corrosion-resistant metal pipe substitute, FRP piping system has been widely used worldwide. By choosing FRP as the pipe material, the need for lining, external coating and cathodic protection can be easily eliminated.

Application of fiberglass reinforced plastic pipe

Due to the high durability, corrosion resistance and medium strength of FRP pipes, its use is increasing day by day. FRP piping systems are used in different industries, such as:

Drinking water and seawater desalination industry

Chemical, petrochemical, oil and gas industries.

Pipes and exhaust pipes

Irrigation and sanitation services

Water distribution and delivery

Mud pipeline

Power plants, etc.

Performance of FRP pipe

The main performance of FRP pipe is to make it an ideal choice for various industries in the world.

Excellent corrosion resistance

Excellent strength-to-weight ratio. It is worth noting that the strength-to-weight ratio of FRP pipes is higher than that of steel or other metal pipes.

Light weight, easy to handle and transport.

Dimensional stability


Low friction coefficient (>25% better than steel), ensuring good flow characteristics.

Good abrasion resistance

Suitable for ground and underground pipelines

Resistance to biological attacks such as bacteria


Low maintenance cost

FRP pipe connection

Since the length of the FRP pipe is restricted by transportation and handling, it needs to be connected. At the same time, various FRP pipe fittings need to be connected as required. The connection system of the FRP pipe shall ensure that no leakage occurs under the predetermined use conditions under the working pressure.

FRP pipe fittings

Various FRP pipe fittings are available to meet the needs of pipeline layout. Common glass steel pipe parts are

Long radius, short radius FRP elbow

Tee connection (equal tee and reducing tee)

FRP pipe flange

Steel back flange

Flange elbow

Smooth reducing elbow

Special bending radius

Horizontal connection

Cross connect

Wye Connection

Reducer (eccentric and concentric)

Flange reducing agent

FRP pipe specifications

When ordering FRP pipes, the following information must be provided to the supplier:

Pipe diameter

The design and working temperature of the applied fluid.

Design, operation, surge, vacuum, test pressure.

Live load of buried pipelines.

Maximum/minimum buried depth and trench width.

Details of soil properties and trench preparation.

Disadvantages of FRP pipes

The main disadvantage of FRP piping system is

It is not recommended to use FRP pipes to transport fluids whose temperature exceeds 100°C

The use of pigments, dyes, UV stabilizers, fillers, etc. in the resin system can reduce the slight degradation of the resin by ultraviolet light.

FRP Piping

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+86 150 2880 2881