ST68-1525 mm, 1830mm MF rod, extension drill rod with ...
MF ROD ST68 L=1525MM, 1830MM Extension Drill ROD ST68, the drill string components feature an entirely new thread design. Compared with T51 rods, the 40% larger rod cross-section of the GT68 MF rods provides 65% higher bending stiffness and withstands the Impact-waves from the piston much longer. So much so that both drill-rod and shank adapter life can be doubled.
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