Pipe systems and storage tanks are constructed from a wide variety of
materials such as metals (carbon steel, stainless, alloys), plastics
(thermoplastics, thermosets, elastomers), and inorganic materials (concrete,
ceramics).
Properties of materials can change in time, influencing the amount of success
of materials in tanks and pipes.
How the construction materials react to corrosive and erosive attack
determines the service life of. The exact function of the pipe or tank and its
operating conditions are the main considerations in determining material
selection. Cost is also an important factor. But whole life cost analysis
should be used, which not only compares material costs, but should also
compare transportation, installation, maintenance and operational costs during
the service life of the pipeline or tank. The environmental impact of a
failing pipe or tank also has to be taken into account.
In many cases GRP pipes and tanks will offer a strong, reliable and cost
effective alternative.
The many advantages of composites may be summarized as follows:
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Superior strength- and-stiffness-to-weight ratios. For the same strength,
composites can be 80% lighter than steel and 60% lighter than aluminium
-
Ability to withstand high continuous operating temperatures compared to
thermoplastics: up to 110°C in many composites: even exceeding 200°C in
special cases.
-
Highly corrosion resistant in almost every chemical environment.
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Electrically insulating in general (depending on reinforcement selected).
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When required, composites can be made electrically conductive or selectively
conductive.
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Low thermal conductivity in general, but can be made conductive when required.
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Exceptional freedom of design; composites can be formed into many complex
shapes.
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Outstanding durability; well-designed composites are expected to have an
almost infinite lifetime, even in extremely harsh environments
-
Corrosion Resistance: the non-reactive nature of many resins and
reinforcements can be custom selected to resist degradation by many common
materials and in corrosive environments.
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Lower maintenance and replacement costs.
