Article: СА-4 Ǿ112 ГОСТ 11108-70

    Crown bit CA-4 f 112

    Price from $ 14.74

    weight: 0.81 kg.

    Description

    It is used for drilling abrasive, monolithic rocks VI-VIII categories. The diameter of the core pipes 108 mm
    Crown SA-4 f 112 designed for rotary and rotary-percussion drilling the bottom hole cleaning cleaning liquid. Structurally, the crown is a cylinder, one end of it is threaded for connection with the core pipe, and at the other end of the pipe is fixed carbide inserts.

    Body material crowns - steel 20
    The solid alloy material - VK8