| 摘要 |
PROBLEM TO BE SOLVED: To support a pipe material without causing the separation and the rotation of a pipe material during conveyance. SOLUTION: A support rod 55 which has a tip end part 58 in a diameter expansible and contractible manner so as to be freely detachable to a rear end opening of the pipe material P disposed on a pipe material conveying line L and an annular-shaped step 59 which is continued to the rear part of the tip 58 and can abut on the rear end surface of the pipe material P are provided on the pipe material conveying line L so as to reciprocate. COPYRIGHT: (C)2008,JPO&INPIT
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