지하 터널 뚫기 기구 고효율 하드 바위 뚫기 기계 덤보 구멍 뚫기

지하 덤보 파리 리그
September 11, 2025
Video Description:
Discover the SANROCK SRJ18 Underground Jumbo Drill Rig, a high-efficiency hard rock drilling machine designed for medium-sized underground drifts. With automatic drilling, real-time monitoring, and advanced safety features, this tunnel drilling machine ensures economical and intelligent operation for mining and foundation construction.