Eyelet grinding shoes can be used to grind objects with inner holes that are unstable and swing in the well, such as drill pipes, drill collars, and casings.
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The skirt-type grinding shoe, due to the presence of a skirt, can enclose the workpiece within the skirt, ensuring that the workpiece is always within the grinding range of the grinding shoe. The bottom cutting teeth grind the workpiece. This type of grinding shoe can mill annular spaces relying on the skirt and can also grind the top of the workpiece. It can be used to grind various swaying tube-like and rod-like workpieces.
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