When the expansion amount of the pipe is insufficient, re-expansion can be carried out. But what should be done if the required tightness still cannot be achieved even after two such expansions?

2009-11-19View Original

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When the expansion amount of the pipe is insufficient, re-expansion can be carried out. But what should be done if the required tightness still cannot be achieved even after two such expansions?

Reply #22009-11-20

Clogging the pipe is generally used. If there are not many pipes, considering changing from expansion jointing to welding is an option.

Reply #32009-11-20

When the expansion amount of the tube is insufficient, re-expansion can be carried out; if the required tightness is not achieved even after two such expansions, welding of the tube sheet to the heat exchange tubes combined with tube expansion can be employed.

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