... Every Angle diamond core drilling machine 1.Diamond drilling machine is a kind of reinforced concrete ,rock ,ceramic ,glass ,fire ... ,gas installation and construction of railway bridge .Also It is available in many fields of construction ,quality-checking ,airfield ... tunnel of road ,railroad and railroad bridge.3.Technical dataDrilling Range: φ15-405mmRated voltage: 110V/220V/240V~Ratde frequency: 50 ...