| 摘要 |
A method of producing a joint between the end of a helically corrugated metal tube and a coupling, whereby a support ring ( 2 ) is screwed into the end of the helically corrugated metal tube until a smooth walled area ( 2 b) remains both inside the metal tube and also protrudes from its end. A thrust collar ( 1 ) is screwed onto the end of the metal tube so that a smooth walled area ( 1 c) of the thrust collar ( 1 ), which is equipped with a flange ( 1 b), protrudes from the end of the metal tube. A graphite sealant ring ( 3 ) is inserted into the end of the metal tube where it is axially and radially deformed and compressed by the action of clamping bolts ( 6 ), which are inserted into holes in the flange ( 1 b) of the thrust collar ( 1 ) and a flange ( 4 b) of the coupling ( 4 ) and clamp the flanges ( 1 b, 4 b) together.
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