| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a rust preventing member in steel pipe, which further effectively suppresses erosion in a steel pipe and improves safety. <P>SOLUTION: The rust preventing member 10A in steel pipe is arranged on openings 12 of both ends of a steel pipe 11 and has lid members 13 with ventilation holes 17. The lid members 13 include joint cylinders 15 arranged on a side peripheral surface outside the steel pipe 11 and lid parts 16 for at least closing the joint cylinders 15, which are arranged at a predetermined interval with both ends of the steel pipe 11. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
