Hardware handle drilling is what?

by:DIgao     2020-07-30
Metal polishing base has been implemented, address: AngYi fishing cross the village ( Wood group for land) Polishing machine number 800, now the relevant matters: - ->
metal shake handshandle refers to use bit drilling operation on entity material processing out of the hole.
drilling the name of each part. Drilling origin said orifice, lateral wall of hole, said at the bottom of the hole bottom. Borehole diameter D referred to as 'aperture, orifice diameter hole diameter, hole bottom diameter said hole diameter. The distance from bottom hole to H said drilling depth, referred to as the hole depth. Borehole of a certain period of said.

we drill is good for metal shake handshandle installation here.
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