Core Drilling Rig, Water Well Drilling Rig, Rock Drilling Rig manufacturer / supplier in China, offering H22*108mm 800mm Integral Drill Rods for Quarrying Very Hard Rock with 34mm and 40mm Head Diameters, Dia. 50mm Length 6000mm PVC Borehole Casing Plastic Pipes, Drilling Pipe Water Well Plastic PVC Pipe and so on.