Supporting structure of chimney inner tube
The utility model discloses a supporting structure of chimney inner tube, chimney include the urceolus and hang at least one inner tube in the urceolus. The utility model discloses a be located urceolus and relative two first trusss that set up, two first trusss all include first upper chord and fir...
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Format: | Patent |
Sprache: | chi ; eng |
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