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Normally drag bits are 3 wings, but we can make 4 or 5 wings following your drawings or samples.

Steel tooth drills are suitable for extremely soft formations with low compressive strength and high drillability such as clay, mudstone, chalk, etc..

Tricone bit is an important tool for oil drilling.

Steel body PDC bit is made by AISI 4145H heat treatment steel manufacture, it has lower cost compare with Matrix body PDC bit.