A large huge ditch pit tunnel with reinforcing structures from thick iron pipes of beams
Related tags:
- heavy machinery
- construction machinery
- construction equipment
- digger
- excavator
- bulldozer
- construction truck
- crane
- equipment
- hydraulic
- construction site
- loader
- construction
- engineering
- machinery
- construction crane
- construction industry
- machine
- industrial machine
- industrial
- industrial machinery
- engineering technology
- dig
- construction work
- construction project
- heavy
- underground
- contractor
- shovel
- soil
- development
- business technology
- project
- metro station
- network
