| 摘要 |
PCT No. PCT/FR96/00938 Sec. 371 Date Feb. 21, 1997 Sec. 102(e) Date Feb. 21, 1997 PCT Filed Jun. 18, 1996 PCT Pub. No. WO97/01059 PCT Pub. Date Jan. 9, 1997A device inserted through a tubular wall by means of a cylindrical flange surrounding a through-bore which is used to insert a tool for flaving the annular region defined by the flange around the bore on the inside of said wall, so that the device may be mechanically secured thereto. The bore is then plugged with a disc and the whole assembly is sealed by brazing.
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