Reinforced polyethylene helical bellows
The utility model discloses a reinforced polyethylene helical bellows, include that the helical bellows who comprises inlayer polyethylene, spiral steel band and outer polyethylene by arranging in proper order from inside to outside personally experiences sth. Part of the body (1), the helical bello...
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Format: | Patent |
Sprache: | chi ; eng |
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