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MDL-135H CRAWLER ANCHOR DRILLING RIG Specification: TYPE MDL-135H MDL-150H Diameter(mm) Φ150~Φ250 Φ150~Φ250 Depth(m) 100-140 130-170 Rod dia(mm) Φ73,Φ89,Φ102,Φ114 Φ73,Φ89,Φ102,Φ114 Drill angle(°) 0...