Tianjin Senker Drill Equipment Trading Co.,Ltd. Located in Tianjin, China. Since 1998, we supplied new, renew, used (rebuilt) tricone bit, steel tooth bit, TCI tricone bit, rock roller bit, three cone bits, tri-cone bit, milled tooth bit, steel tooth rock bit, PDC bit, diamond core bit ,single cone bit ,reamer bit,hole opener ,drill pipe ,drill rod ,drilling machine,downhole motor,button bits. Our products can work for oil well, water well,mining,geothermal, environmental, exploration and blast hole.