Connecting pipe fitting for polyethylene (PE) steel band reinforced helical bellow
The utility model discloses a connecting pipe fitting for polyethylene (PE) steel band reinforced helical bellow, including first bellows and second bellows, the second bellows is close to in and thesymmetrical setting the same with the 2nd bellows structure of first bellows, first bellows one end i...
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Format: | Patent |
Sprache: | chi ; eng |
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