Applications and Key Benefits

Since the mid to late &#;s underground large-diameter composite piping has continued to grow in applications and usage. Technological advancements in the filament winding process, corrosion resistance, education and outreach, and strong market forces have contributed to the popularity of fiberglass pipe. Definitions of what constitutes large-diameter pipes can vary, but generally speaking they range from 12&#; to 14&#; in diameter. 

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Composite, or fiberglass pipe, has been utilized in a wide range of industries such as power generation, petrochemical and desalination.  Fiberglass pipe is corrosion resistant, has a life cycle that often exceeds 30 years, and has become increasingly more desirable as an alternative to steel, other metal alloys, ductile iron, and concrete.  According to an article published in , titled &#;Large Diameter Pipe: Lasting Function in a World of Growth&#; more than 60,000 km (37,280 miles) of composite large diameter pipe are in operation around the world. 

Although fiberglass was once viewed as specialty product, for its ability to withstand an attack from sulphuric acid, it has now become a standard material, if not the standard in major market segments for a variety of reasons.  For example, fiberglass has been employed in drinking water projects, irrigation systems for agriculture, feed lines and penstock for hydroelectric power plants, power plant cooling water systems, gravity and pressure sanitary sewers systems, and pipeline rehabilitation &#;slip liners&#;.  Over the past two decades fiberglass has begun to transcend it&#;s early stereotypes as a one-trick pony (e.g. corrosion resistance) and has demonstrated its value as a cost-effective material, offering a plethora of end-user benefits.

Chief among the reasons for fiberglass increased usage and popularity are key benefits such as high strength-to-weight ratio, dimensional stability, good mechanical properties, ease of installation, reduced installation costs, reduced maintenance cost, and overall durability in extreme conditions. Similarly, another advantage of fiberglass pipe is it has a smoother inner surface when compared to traditional construction materials.  This attribute, smooth internal bore, resists scale-deposits and can create greater flow of service liquid over the life of the project.

When designing an underground large diameter pipe system many considerations need to be taken into account; local soil conditions, depth of water table, burial loads, live loads, deflection due to burial stress and operating temperatures&#;just to name a few.   Similarly, an American Water Works Association manual, Fiberglass Pipe Manual, also known as M45, provides equations that take into account factors such as fluid velocity and fluid pressure, head loss due to turbulent flow, water hammer, buckling pressure, and surge pressure.  Designing a proper underground piping system is a complex process that involves extensive calculations&#;product design should always be by qualified engineers. 

 

 

 

FRP Pipes - What Are The Benefits Of Using FRP Pipes?

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Fiberglass Reinforced Plastic (FRP) Pipes are used in various industrial product applications including the handling of materials in a corrosive environment and also the transfer of corrosive products and materials. However, the fastest growing application of FRP systems is for industrial equipment. The application of FRP pipes ranges from handling of combustible and flammable liquids at retail facilities to water and sewer mains in the industrial and municipal markets.

Advantages of FRP Pipes

1. Corrosion resistance
FRP pipes inherit resistance to corrosion. In most cases, Fiberglass Reinforced Plastics are the only material that can handle some service environment. Moreover, their resistance to corrosion is normally combined with their cost advantage to make them the most acceptable solution. Corrosion resistance of Fiberglass Reinforced Plastic pipes is a function of the total resin content and the resin used in the pipe laminate. Therefore, higher resin content means more resistance to corrosion.

2. Weight advantages
FRP pipe has low weight to strength ratio, which is another distinct advantage of the FRP pipes. For the same strength, Fiberglass Reinforced Plastic pipes weigh approximately half as much as aluminum and one seventh as much as stainless steel. 
Lightweight properties are vital especially when considering the ease and cost of installation of piping systems. FRP pipes&#; inherent light weight is a major advantage when the equipment has to me mounted on an existing structure such as scrubbers on rooftops or mezzanines.

The high strength of FRP pipes plays a major role in the design of various FRP equipment and applications such as pultruded shapes. Moreover, the high strength combined with the light weight features make FRP pipes suitable for filament wound pipes and ducts. 

4. Economy

Lower cost is a major advantage of using FRP pipes because they offer an effective solution to corrosion at the lowest cost when compared to materials such as titanium, rubber lining and stainless steel. However, the cost advantage of such materials mainly depends on the design considerations, application, pressure involved, availability, raw material costs and product configurations.

5. Flexibility

FRP pipes are versatile in their applications is often overlooked. However, it is important to note that you can do things with Fiberglass Reinforced Plastic pipes which cannot be done effectively and economically with other readily available materials. FRP pipes can be used to mold any piece of equipment or configuration for which permanent or temporary molds can be built. For instance, duct work is quite easy with FRP pipes because you can make all types of Tee inlets, rectangular transitions, circular transitions, elbows, and flanges at minimal cost. Fiberglass Reinforced Plastic pipes can also be used to line new and existing structures.

The design of FRP systems has been greatly enhanced by using of computer software programs. These programs mainly include; chemical composition, gas flow analysis, liquid flow analysis, thrust block analysis, free span analysis, and installation information. This is very important in order to ensure that the specific requirements in different industries are fully met so as to guarantee maximum efficiency of FRP pipes.

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