Commonly used domestic drilling rig category signs and characteristic codes are as follows:
X stands for core drilling rig (core)
Sz stands for placer drill (sand drill)
S stands for hydrological drilling rig (hydrology)
G stands for engineering drilling rig (engineering)
K stands for tunnel drill (tunnel)
Q stands for shallow hole drill (shallow drill)
R stands for geothermal drilling rig (geothermal)
Commonly used domestic drilling rig category signs and characteristic codes
The last one:Hoisting machine type 50 drilling rig | Next item:Hoisting machine type 50 drilling rig |