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Sand Dry Pu Machine

Sand Dry Pu Machine

Powdered natural rosin was traditionally used as a binder in core sands coremaking methods cores are made by many of the same methods employed for sand moldsin addition core blowers and screw feed machines are used core blowers force sand into the core box by compressed air at about 100 lbin 2they can be used for making all types of small and mediumsized cores.


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