At present, Model CTP-600-20 jet piercer with chambering diameter of 600 mm and more is a largest one in Commonwealth of Independent States, which equipped with two compressors with capacity of 32 m~3/min each.

• 装有两台32m~3/min空压机、能扩孔至600mm甚至更大直径的CTP-600-20型火钻,是目前独联体最大型的火力扩孔钻机。