Fiberglass pipes boast excellent physical properties. The density of fiberglass pipe materials ranges from 1.8 to 2.1, approximately one-fourth that of steel. They have a higher specific strength than steel, cast iron, and plastic. The weight of fiberglass pipes is generally not more than one-third that of steel pipes of the same specification. They exhibit superior mechanical properties. Additionally, the expansion coefficient of fiberglass pipes is roughly equivalent to that of steel, while their thermal conductivity is only 0.5% of steel's, making them excellent insulators for both heat and electricity.
2. Glass steel pipes are resistant to chemical corrosion and have a long service life, making them suitable for transporting various media such as acids, alkalis, salts, and organic solvents.
3. Glass fiber reinforced plastic (GRP) piping exhibits excellent hydraulic properties, which are one of the key features of GRP pipes. Superior hydraulic characteristics imply minimal fluid pressure head loss, allowing for the use of smaller pipe diameters or pumps with less power, thereby reducing initial investment in pipeline projects, saving electrical energy, and lowering operating costs. The inner surface of GRP is quite smooth, with a typical surface roughness of 0.008, almost qualifying as a "hydraulic smooth pipe." During operation, the inner surfaces of steel, cast iron, and concrete pipes often suffer from localized corrosion, becoming increasingly rough, whereas GRP maintains its smooth surface condition like a new pipe.
4. Glass steel pipe installation and maintenance costs are low. Generally, glass steel pipes do not require special anti-corrosion treatment; the insulation layer can be thinned, or no additional insulation is needed. The pipes are relatively lightweight, requiring smaller lifting equipment tonnage and less power consumption. Glass steel pipes are longer than cement pipes and cast iron pipes, resulting in fewer joints, which all contribute to reduced installation and maintenance costs, a fact proven by numerous engineering practices both domestically and internationally.
5. Glass fiber reinforced plastic (GFRP) piping offers high design flexibility and a short modification cycle. GFRP is made by winding fiber-reinforced materials, which are浸有树脂的基体，layer by layer onto a mandrel under specific process conditions and then cured appropriately. The pipe wall is a laminar structure that can be adjusted to modify the physical and chemical properties of the GFRP pipe by changing the resin system or using different reinforcing materials. This allows for the production of GFRP pipes with varying pressure ratings or specific performance characteristics to suit different media and working conditions. The short modification cycle is a significant feature of fiber-wound composite materials, which cannot be matched by anisotropic metal piping.
