Crown СА-4 f 93
designed for rotary and rotary-percussion core drilling with bottomhole cleaning washing liquid. Structurally bit is a cylinder which at one end for threaded connection to the core pipe and the other end of the tube attached carbide inserts.
designed for rotary and rotary-percussion core drilling with bottomhole cleaning washing liquid. Structurally bit is a cylinder which at one end for threaded connection to the core pipe and the other end of the tube attached carbide inserts.
Body material crown - Steel 20
Material carbide - VK8
