FRP pipes characteristics:

（1）FRP pipes are lightweight and high-strength. Their relative density is between 1.5 and 2.0, only 1/4 to 1/5 of that of carbon steel. However, the tensile strength is close to or even exceeds that of carbon steel, and the specific strength can be compared with that of high-grade alloy steel. Therefore, it has excellent effects in products that require weight reduction, such as aviation, rockets, spacecraft, and high-pressure containers. The tensile, bending and compressive strengths of some epoxy FRPs can exceed 400 Mpa.

（2）Good corrosion resistance. FRP is a good corrosion-resistant material, having good resistance to the atmosphere, water, and common concentrations of acids, alkalis, salts, as well as various oils and solvents. It has been applied in all aspects of chemical corrosion and is replacing carbon steel, stainless steel, wood, and non-ferrous metals.

（3）Good electrical properties. It is an excellent insulating material and is used to make insulators. It can still maintain good dielectric properties at high frequencies. It has good microwave transmission properties and has been widely used in radar radomes.

（4）Good thermal properties. The thermal conductivity of FRP pipes is low. At room temperature, it is 1.5 MPa. 25 - 1.67 kJ/(m·h·K), only 1/100 - 1/1000 of that of metals. It is an excellent thermal insulation material. Under instantaneous ultra-high temperature conditions, it is an ideal heat-resistant and ablation-resistant material to protect spacecraft from high-speed air scouring above 2000°C.

（5） Good design. According to needs, various structural products that meet the requirements can be flexibly designed, which can make the products have good integrity. ② You can fully select materials that meet the product performance. For example, you can design a corrosion-resistant, instantaneous high-temperature, directional product, especially with high strength and good dielectric properties, etc.

（6）Excellent workmanship. ① The molding process can be flexibly selected according to the shape, technical requirements, uses and quantity of the product. ② The process is simple and can be molded at one time, with outstanding economic effects. Especially for products with complex shapes and small quantities that are difficult to mold, its technical advantages are more prominent.