carbon curtain tube Functions and Characteristics 1. Its strength is up to 8-10 times and even exceeds that of ordinary steel. The high modulus elasticity is better than steel and have many good characters such as excellent creep resistance, fine corrosion-resistance and fatigue resistance. 2. Light weight. Its weight is only 1/5 of steel. 3. Nice ductibility, low noise, light vibrations. Light weight. Its weight is only 1/5 of steel.