The upgraded drum locking device has integral drum locking blocks and a float screw rod, with the antivibration performance improved and the thread clearance eliminated.
改进的穿孔机转鼓器结构，采用整体压鼓块和浮动丝杆，消除了螺纹间隙，提高了抗振性能。
2
The float switch assembly is complete with a large diameter copper float, brass floatrod and adjustable float stops.
整套浮筒开关带有大直径铜浮子，黄铜浮标和可调浮球止回阀。
3
The technology of finishing float resisting anchor rod construction in deep sand layer with geological drilling rig slurry retaining wall technology is analyzed briefly.