Dayang Petroleum Equipment Co., Ltd. (dy Petroleum Equipment Co., Ltd. ) has more than 25 years experience in china, specialized in producing Drilling Rigs from 1000 meter to 7000 meter and Drilling Parts such as Casing and Tubing, Drill Pipe, Pumping Units, Drawwoks, Rotary Tables, BOP, Mud Pump, Wellheads, Fishing Tools, Handling Tools and so on.