| 摘要 |
PURPOSE: A spiral tube for high-strength structure is provided to improve pipe stiffness and durability by reinforcing wall surfaces of a reinforcing part. CONSTITUTION: A spiral tube(10) for high-strength structure forms an inner shell body(12), and a reinforcing part(14) as one body. The reinforcing part is protruded in a spiral direction from the inner shell body to the outside. An auxiliary reinforcing part is formed to the inner wheel body and reinforcing part, as one body, to have auxiliary hollow portions(32) on both sides of the reinforcing part. An outer shell body(20) is integrally formed to the outside of the auxiliary reinforcing part. Reinforcing support ribs(34) are protruded outside the auxiliary reinforcing part, as one body with the outer shell body. Thus, pipe stiffness and durability of the spiral tube are improved.
|
