FIRST STAGE OF TESTING 165 (6 1/2) DTH-QL6 F2S BITS IS OVER
Testing of DTH bits 165 (6 1/2) DTH-QL6 F2S was carried out at open pit Zhelezny, Kovdorsky GOK, JSC. The bits were used in combination with drill rigs DML HP, DM45 HP and ROK L8 for drilling vertical blast holes, 3 – 19m deep, in formations with drillability code XIV – XVI.
The average meterage amounted to 1 091m, which is by 42% more than that of basic bits used by Kovdorsky GOK before.
Currently, preparatory works for field testing of a commercial batch of 165 (6 1/2) DTH-QL6 F2S bits are under way.
Volgaburmash and Uralburmash are Russia’s largest companies producing rock-cutting tools