flute barrel reamer for HDD machine oil drilling reamer

Flow guide reamer (Φ200 -Φ1800). For quicksand, sand, backfill, and multi-stone formation.
Shell structure: steel castings, structures
And the drill pipe connection: will be detachable (Octagon sets of structure), Direct Connect (direct connection with the drill pipe)
And pipe connections: Built-in actuator, without sub-actuator