TREA

with a rotary drilling-head cutting simultaneously the whole cross-section

Follow

Industry

  • CPC
  • E21D9/087
This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS E21D9/00Tunnels or galleries, with or without linings Methods or apparatus for making thereof Layout of tunnels or galleries

Current Industry

E21D9/087with a rotary drilling-head cutting simultaneously the whole cross-section
Industries