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A kind of rolling pipe winds dispatching device
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Copper pipe internal thread forming device
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Double-thread inner-grooved copper tube forming device
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Reinforced turbulent flow type heat-transferring copper pipe
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Composite tooth-shaped internal thread copper pipe structure
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Tube expanding deformation directional induction type internally-threaded heat transfer tube
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A kind of high efficient heat exchanging type copper pipe structure
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Heat exchange copper tube provided with straight internal threads
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Seamless heat transfer composite copper pipe
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Inner grooved copper tube capable of directionally controlling thread extrusion deformation
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Internally-threaded copper tube structure
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Combination type heat transfer seamless copper pipe
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Compound tooth heat exchange copper pipe
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Seamless internal thread heat transfer copper pipe
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Asymmetric multi-tooth inner grooved copper tube
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Threaded heat transfer pipe for heat exchanger
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Internal threaded copper pipe structure
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Internal threaded heat-transfer copper pipe
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Light and effective heat transfer copper pipe
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Combined tooth type inner grooved copper tube
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