Dn80 管外径

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DN 80 in der Entwässerungstechnik - SBZ

DIN 基準規模

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橡胶软接头dn80的等效应力值相差较大 - 知乎

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DN 80 / 88,9 mm / 3" - PN 40 - 1.4571 - Blindfl...

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Transitions pipes from DN 70 to DN 80 and DN 70...

DN 80 / 88,9 mm / 3" - PN 40 - P245GH / C22.8 –...

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DN80负压供水橡胶接头在管道中的主要功能是什么？ ...