1.Pillar PDC Bits Using PDC as the main cutting components. 

2.With impact resistance pdc hard rock drill bit for penetration the degassing hole, drain hole, and grouting hole of coal mine. 

3.Pillar Non Coring PDC Bits drilling efficiency is slightly lower than concave bits, but the abrasion performance is stronger.

4.Wear resistance pdc tooth.

5.Long service life with minimize cost.

                                  Shaanxi Zuanlong Drilling Machine Co.,Ltd

        Contact:May Liu                                               Email:zuanlongbits@gmail.com                                           

        Tel:+86-15291688126                                         Skype:May Liu                                                                        

        Whatsapp:+86 15291688126                                We Chat:L11066245