1.Brief introduction of QZ-2A three phase electric sampling drilling rig QZ-2A is a three phase electric sampling drilling rig , produced by Shandong Master Machinery Group Co.,Ltd. It is suitable for industrial and civil buildings, bridges, railways, roads, utilities and other sectors of the geological exploration. 2. Technical parameters of QZ-2A three phase electric sampling drilling rig QZ-2A three phase electric sampling drilling rig Borehole diameter (mm) 32-91 Drilling depthm soil9110-15m stone915-10m stone7510-15m stone6015-20m stone4620-25m Drilling pipe diameter (mm) 28 Rotate speedr/min 185-380 Torquen.m 80 Powerkw 3 Dimensionl*w*h 600*450*1900 Weightkg 95 3. Configuration list of QZ-2A three phase electric sampling drilling rig Item Parameter Unit Quantity Three phase electric sampling drilling rig QZ-2A platform 1 Drilling pipe 28*1500 pc 6 Drilling pipe 28*800 pc 8 Drilling joint 35 pc 14 Reducing nipple 45/35 pc 1 Core barrel 45*800 pc 1 Alloy bit 46 pc 1 Reducing nipple 58/35 pc 1 Core barrel 58*800 pc 1 Alloy bit 60 pc 1 Three-wing bit 0 pc 1 Safety clamp hold 1 Water seal Y30*50*10 pc 4 Oil seal 17*50*10 pc 2 Control wheel set 1