6 inch diameter hose assemblies for rotary drilling
Big-hole drilling - the state of the art (Conference . Studies of the drilling performance of the CALVERT 27 drilling rig, loed at the Nevada Test Site (NTS), comparing the old four (4) inch mudline and three and one half (3-1/2) inch rotary hose to the new six (6) inch mudline and five (5) inch rotary hose found that operating costs and operating air and mudpump pressures had decreased.
Get Price