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Hebei Zhankui Drill Equipment Co., Ltd , Spare Parts Compact was established in 1980.professional supplying (new and used)Tricone bits(TCI bit and steel tooth bit),PDC bits, drill pipe, drill collar ,put together the long diameter bits and so on drilling equipment for petroleum & gas, water well ,mining and tectonic industries. Only one of the manufacture of PDC bit and diamond core bit in our area. The size ranging from 3" to 17 1/2" ,of various type as per IADC code which is a drilling tool used for oilwell, water well & coal mines exploration. To supply all our clients the best quality products is our eternal persuit...