cut drill

Diagonal cut rock drill plus bits Cross recessed pan head screws

对角十字形岩石钻头GB/T818-1985十字槽盘头螺钉

First drill hole cut across a bit bottom board , then pour starch into consolidate bottom board.

在井下施工堵水钻孔,钻孔穿透煤层隔水底板少许,注浆堵水加固底板.

Part of the crack is cut by drill, the crack surface is dust-colour under naked eyes.

钻孔截取裂纹局部，肉眼可见裂纹表面呈暗褐色。

Diagonal cut rock drill plus bits cross-bladed chisel bit

对角十字形岩石钻头

CUT TO : MULDER screaming as the mouth drill penetrates his soft palate.

(切到: 当钻头穿过模特柔软的上颚的时候,模特尖叫着. )

Integral spiral heavy weight drill pipe is to extend the central upset of heavy weight drill pipe and to cut spiral groove on heavy weight drill pipe.

整体螺旋加重钻杆是在整体加重钻杆的中间加厚部位延长并铣削螺旋槽。