FRP Pipe

Product Overview

FRP pipe is a composite pipe made from fiberglass and synthetic resin by winding. It is strong, light and corrosion resistant and has good hydraulic performance. The bore is smooth, so fluid resistance is low, transfer efficiency is high and scale does not build up readily in long service. Compared with conventional metal pipe, FRP pipe needs no internal or external protective coating, and its performance stays stable over long service in acid, alkaline and salt environments, so service life is long and overall economics are good. The pipe is light, which makes transport and lifting easier and reduces installation cost.

FRP pipe is produced by winding, and the wall structure is designed for the service pressure; fiber and resin form a dense composite with high strength and good sealing. The pipe weighs only a fraction of a steel pipe of the same size, which makes transport, lifting and installation easier and reduces overall project cost. It is a good insulator and non-magnetic, which suits special operating conditions, and it is widely used for water supply and drainage, chemicals and power. A complete range of fittings is available, jointing methods are flexible and installation is efficient.

Technical Specifications

FRP pipe is available in a wide range of common diameters, with wall thickness designed for the working pressure and lengths cut to project requirements. The working temperature is limited by the temperature rating of the resin, so the medium temperature should be checked against the resin system when the pipe is selected. Socket (bell-and-spigot) joints and flanged joints are the common methods, matching fittings are supplied, and the pipe structure and wall thickness can be designed to suit the system. Different pressure classes are available to project requirements to meet the design of different transfer systems.

FRP pipe is graded by service pressure; the wall is made up of the filament wound layer and the surface resin layer, a sound structure with reliable strength. The bore is smooth and of low roughness, so hydraulic friction is low and pumping energy is reduced. Pipes in different diameters, lengths and wall thicknesses can be supplied to project requirements, and clear marking makes site control easy. The complete range of fittings keeps joints reliable and installation quick.

Production and Quality

FRP pipe is produced to strict process standards, with controlled winding tension, resin content and degree of cure, giving a dense wall and stable performance. Every pipe is checked for appearance and measured before dispatch, and hydrostatic pressure and mechanical properties are sampled and tested by batch to confirm that the product meets the requirement. Test data are recorded and kept on file, and inspection reports can be supplied with the goods for customer acceptance. The whole production process is managed to standard procedures so that batch quality is stable and reliable.

Production is under full quality control, combining incoming raw material inspection, in-process control and finished product inspection so that quality is stable and reliable. The surface is smooth with no bubbles or delamination, and the ends are flat for easy jointing. Samples are kept by batch for reference, quality is traceable, and the customer is given quality assurance. Packaging is to standard with the pipe ends protected, so the pipe is not damaged in transit and arrives in good condition.

Applications

FRP pipe is widely used in chemical lines, wastewater treatment, water supply and drainage and seawater desalination, and it suits the transfer of corrosive media in particular, avoiding the leaks and replacements caused by corrosion of metal pipe. Buried pipe resists corrosion and soil attack and has a long service life, which makes it a preferred material for municipal networks and industrial lines. Installation and maintenance are easy, running costs are low, and the overall economic benefit is clear.

FRP pipe is widely used in power station circulating water systems, cooling water lines and flue gas desulfurization (FGD) systems, where its corrosion resistance and hydraulic performance support stable long-term operation. It can also carry drinking water: hygiene performance meets requirements, the smooth bore resists scaling and water quality is protected, which makes it a dependable choice for water supply works. It meets the requirements of different pressure classes and has a wide range of applications, and it is an important material for water transfer systems in many industries.