4mm drill rod
The use of wood mold or lost foam requires the mold to be consistent with the real thing, the appearance is smooth, and the yield and surface finish of the casting are improved, so as to reduce flash, burr and cold separation.
Operational Precautions for the Integrated Drilling and Piling Machine:
03 REGULAR LUBRICATION
Third, the structure of the drilling rig:
The drill tool is composed of drill pipe, ball tooth drill bit and impactor. When drilling, two drill rods are used to drill. The reverse air supply structure is composed of a reverse motor, a reverse reducer, and a reverse air supply inverter. The reverse reducer is
The drill tool is composed of drill pipe, ball tooth drill bit and impactor. When drilling, two drill rods are used to drill. The reverse air supply structure is composed of a reverse motor, a reverse reducer, and a reverse air supply inverter. The reverse reducer is