| 摘要 |
PROBLEM TO BE SOLVED: To provide a tool, by which a collar of a fitting can be easily pushed into a body of the joint. SOLUTION: A groove (12), which is provided to a flange part (4) on one end of a circular cylinder (3) of a tool (1), is fitted with a protrusion (25) of a collar (7), and the collar (7) is pushed into a fitting body (6) together with the tool (1).
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