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Outstanding advantage: The most outstanding advantages are the stable and reliable working performance and the less vibration of drilling rig.
Different forms: Symmetrix with reamer / symmetrix with wings / symmetrix with blocks
Application range: It is recommended to apply in rock formation where contains some ovals and fractures.
Concentric casing drilling systerm
Changsha Tianhe Drillingtools And Machinery Co.,Ltd
products, range:, hammer, Button, casing, drilling, systerm, concentri...
