I-Hydraulic anchor drilling rig ingumshini womthelela we-pneumatic, osetshenziselwa ikakhulukazi ihange ledwala nomhlabathi, i-subgrade, ukwelashwa kwemithambeka, ukusekelwa komgodi ojulile ongaphansi komhlaba, umhubhe ozungeze ukuzinza kwamadwala, ukuvimbela ukudilika komhlaba...
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