Pultruded carbon fiber tube and rod are high-performance composite materials made through high-temperature heat treatment and extrusion processes, with advantages such as lightweight, high-strength, corrosion resistance, high-temperature oxidation resistance, and low thermal expansion coefficient. The main characteristics of pultrusion carbon fiber tubes and rods include: 1. High strength and stiffness: Carbon fiber composite materials have much higher strength than metals, and their stiffness is equivalent to that of steel. 2. Lightweight: Its density is only one fourth that of steel, but its strength is four or five times that of steel. 3. Corrosion resistance: Carbon fiber has good corrosion resistance to most chemicals. 4. High temperature oxidation resistance: Carbon fibers have excellent oxidation resistance in high-temperature environments. 5. Low thermal expansion coefficient: Carbon fiber has a very low thermal expansion coefficient and can maintain stability even at high temperatures.