... cone bits Roller cone bits with wide crest cutters 1.Bit diameter code: indicated by numbers (integer or fraction). The numbers ... indicate diameter of the bit in inches.The series codes of oil well drilling bits ... )HJT: Metal face sealed journal bearing, special gage protection537: Insert bit for drilling in soft to medium hard formation with low ...
... Product Description PDC Drill BitPDC Anchoring Drill Bit THEORY: PDC(Polycrystalline Diamond Compact) drill bit is a new product after the hot ... -pressed and electroplated drill bit in recent years. With special hith-frequency weldin techniques, ... resistant is welded to the body as cutting edges. PDC bit is mainly used for geological prospecting, coal exploration, water ...
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