... of model and dimension available 4 Fast drilling rate Tricone bit1.High-strength, high flexibility, high temperature, high ... Petroleum Equipment Co., Ltd, who produces and exports drill bits. We have a Export Department, which specialize in ... ourselves including Drill bits, Drill Pipe, TCI tricone bits, PDC bits, PDC Diamond drill bits, roller rock bits, core bits, all size bits in oilfield, water ...