DRILL BIT FOR ROTARY DRILLING

Drill bit for rotary drilling has tail element with two calibration lugs, working head with two central and two peripheral nibs and diamond-hard alloy plates installed on nibs and two wear-proof inserts. Peripheral nibs are equipped with diamond-hard alloy plates with flats turned to periphery. The...

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Bibliographische Detailangaben
Hauptverfasser:	Krasnik Viacheslav Hryhorovych, Oleinikov Borys Andriiovych, Sveshnikov Ihor Arkadiiovych
Format:	Patent
Sprache:	eng ; rus ; ukr
Online-Zugang:	Volltext bestellen
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