drag bits they are applied to rock formation fd6, like mudstone, shale, sandstone, etc., mainly used for drain hole, grouting hole, geological and hydrology drilling, etc. Usually drag bits are....
Cangzhou Great PDC Bits Co., Ltd. ( Great) specializes in the R& D, manufacture, distribution and service of oil drilling tools and equipment. The leading products are high-performance diamond drill....
steel body pdc drill bits 1) supply new and junk drill bits, pdc bits, tci bits, tricone bits, rock bits. 2) steel tooth bits, drill pipe, scrap drill bits, junk drill bits, scrap tricone bits, ....