soil mixing wall auger starter smw550mm match bauer jintai korea japan brand drill rig

soil mixing wall hexagonal joint have 254mm coupling  hexagonal joint 120m, 120h,

soil mixing wall auger starter smw370 match bauer jintai korea japan brand drill rig

10inch drill rod with hexagonal joint for soil mixing wall auger

8nch drill rod with hexagonal joint for soil mixing wall auger