DHD3.5 DHD340 DTH Button Bits - China Casing Drilling ...
DHD3.5 DHD340 DTH Button Bits. DTH bits are the tools of cutting rock. Sinodrills DTH rock drill bits are made of superior quality alloy steel which is made by Timken in U.S. Besides, all our DTH bits are using the brand 'Element Six' T.C carbide which provides (the T.C buttons) for Boart Longyear.
Get Price