China Bulroc Br1 Br2 Br3 And 3inch Medium Air Pressure ...
Bulroc Br1 Br2 Br3 and 3inch Medium Air Pressure Down The Hole DTH Drill Hammer. BR1 BR2 BR3 series DTH hammers are designed to operate efficiently at low air pressures and medium air pressures, using BR series bits. The main features are as follows: 1.The operation air pressures are between 0.7Mpa to 1.75Mpa; 2.Valveless hammers;
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