ND-S型水力式內割刀

Hydraulic Internal Cutter Type AND-S

ND - S型水力式內割， 從被切割的管柱內下放到預定深度， 加大泵壓推動活塞下行使刀翼張開， 刀翼隨同鉆具旋轉開始切割。它適合石油、地質部門切割各類型的套管、油管和鉆桿 。如配接打撈矛時可切割、打撈—次完成。

Model    "ND-S"    Hydraulic Internal Cutter can be lowered into desired depth from cutted pipes string. The increased pump pressure can push piston downward as to make blade stretch. And the blade rotates in company with drill tool to start cutting. It can be used for all kinds of casing, tubing and drill pipe in oil/geology department. If it is equipped with the spear, cutting and fishing can be completed at the same time.