中低风压潜孔冲击器及钻头 GBR系列潜孔钻头
Middle＆Low air pressure DTH hammers and drill bits GBR series DTH drill bits
GBR2A冲击器用钻头 Drill bits for GBR2A hammers |
76 | 3 9/16 | 6x13 | 5x10 | 38 | 2 | 3.6 | GBR2-76BFF6 |
80 | 3 3/4 | 6X13 | 5X11 | 38 | 2 | 4.0 | GBR2-80BFF6 |
90 | 3 15/16 | 6X14 | 5X12 | 38 | 2 | 4.2 | GBR2-90BVC6 |
