FRP Pipe for Water Supply Systems

Product Overview

FRP pipe is one of the main product types in the FRP range. The resin system can be chosen for the medium and the service conditions, meeting requirements for acid and alkali resistance, temperature resistance and flame retardancy. A full range of sizes is available and jointing is flexible: socket and flanged connections can be used, so installation is convenient. The product resists soil and seawater corrosion and shows clear advantages in buried networks and coastal projects. The smooth bore resists scaling, transfer efficiency stays stable in long service and maintenance work is limited.

FRP pipe is made from fiberglass and synthetic resin by winding. It is strong, light, corrosion resistant and good hydraulically. The bore is smooth, fluid resistance is low and transfer efficiency is high, and scale builds up only slowly in long service. Unlike conventional metal pipe, it needs no internal or external anti-corrosion treatment, and it performs stably over long service in acid, alkaline and salt conditions, with a long service life and good overall economics. Low weight makes transport and lifting easier and reduces installation cost.

Technical Specifications

The pipe is available in the common diameters used in process and water systems, with wall thickness designed for the working pressure and length cut to project requirements. Working temperature depends on the temperature rating of the resin, so the medium temperature should be confirmed against the resin system when the pipe is selected. Socket (bell-and-spigot) and flanged joints are the standard connection forms, matching fittings are supplied with the pipe, and the wall structure and thickness can be designed to the system. Several pressure classes can be provided to suit different transfer systems.

FRP pipe is divided into pressure classes, and the wall is formed by a wound fiber layer with a resin-rich surface layer, a rational structure with dependable strength. The bore is smooth and its roughness is low, keeping hydraulic friction and pumping energy down. Pipes in the required diameter, length and wall thickness can be produced to the project, so the design of each transfer system can be matched. Marking is clear for site management, and with the complete range of fittings the joints are reliable and installation is quick.

Production and Quality

The pipe is made to strict process standards, with controlled winding tension, resin content and degree of cure, so the wall is dense and performance stable. Each pipe is inspected for appearance and dimensions before leaving the works, and hydrostatic pressure and mechanical properties are sampled and tested by batch to confirm that the product meets the service requirement. Test data are recorded and archived, and an inspection report can be supplied with the goods for acceptance. The whole process is run to standard procedures, which keeps quality consistent from batch to batch.

Full-process quality control combines raw material inspection on arrival, process control during production and final inspection of the finished pipe, which keeps quality stable and dependable. The surface is smooth with no bubbles or delamination, the ends are flat and ready for connection. Samples are kept by batch for reference, quality is traceable and the customer receives quality assurance. Packaging is standard, the pipe ends are protected, and the pipe arrives undamaged and ready to install.

Applications

FRP pipe is used in chemical lines, wastewater treatment, water supply and drainage and seawater desalination systems, and it is well suited to corrosive media, avoiding the leakage and replacement problems that metal pipe suffers through corrosion. In buried service it resists corrosion and soil attack and lasts a long time, which makes it a preferred material for municipal networks and industrial lines. Installation and maintenance are easy and running costs are low, so the overall economic return is good.

The pipe is widely used in power station circulating water systems, cooling water lines and FGD systems, where corrosion resistance and good hydraulic performance allow stable long-term running. It is also suitable for drinking water, with hygiene performance that meets requirements and a smooth bore that resists scaling and protects water quality, which makes it a dependable choice for water supply works. It meets the requirements of different pressure classes and covers a wide range of duties, and it is an important material for water transfer systems in many industries.