Xi'an Tydrillbits Co.,Ltd is one of the most famous China pdc drag bits manufacturers,Website:://.tydrillbits.com, welcome to wholesale cheap three wings pdc bit, drag bit for ang formation from our factory. Description of PDC drag bits PDC drag bit is one kind of steel body drill bits. Steel body PDC drill bit is made of steel and PDC cutters. Steel body bit is suitable for fast drilling excluding gravel and low compressive strength easy to drill layer. It has wider runner which is good for carrying rock debris timely. Steel body drill bit body is made with whole piece of carbon  steel by machining. PDC cutter is welded on the tungsten carbide tooth as the cutting teeth, then cutting teeth are welded on the drill bit body. Diamond piece is inserted to the body ad the drill bit gauge.    Specification of PDC drag bit Size （mm） Water hole No. PDC cutter No. Connection thread 94 3 12         API standard thread or Customized   113 3 15 133 3 18 143 3 21 153 3 21 190 3 24 200 3 27 215.9 3 30 …… (Water hole No. according to blades No.) According to the customer’s requirement Application of PDC drag bit PDC drag bit is used to drill into soft to medium hard rock formation. It has a highest drilling efficiency in the soft rock and used for trepanning.