zuanlongbits@gmail.com

+86-029-82612068

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Email: zuanlongbits@gmail.com

Tel: +86-029-82612068

Fax: +86-029-82612068

Address:No 66, Changming Road, Xi'an, Shaanxi Province, China

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non coring pillar drill bit for hard rock

  • China Top Manufacturer 3-wing Blade Drag Bit/Drag Bit Sizes/Drag Bit Prices

    Contact NowChina Top Manufacturer 3-wing Blade Drag Bit/Drag Bit Sizes/Drag Bit PricesZuanlong supplies a variety of drag bits for many types of projects drilling needs, including 3 wings type bits for soft and medium formations, 4 wings, especially 4 wings chevron type for harder formations. Each of our bits is machined from a forging to exacting standards and then tipped with tungsten carbide. Mining grade tungsten carbide tips are brazed to the bits wing face for heavy duty bits. Then pin threads are CNC manufactured and wings surfaced hardening subsequently.Read More

  • Best Price Core Bit Set Core Drill Bit For Sale

    Contact NowBest Price Core Bit Set Core Drill Bit For Sale1). Our prodcut has been approved by ISO9001; 2). Our company has been awarded various certificates and honors by goverment, such as observe contact and keep promise enterprise, reliable quality enterprise, civilized unit, high and new tech enterprises, advanced qualtiy management enterprise,ect. ; 3). Specific researching and developing laboratory; 4). More than 15 years manufacturing experience;Read More

  • PDC 2 Wings Full Tips Bit,dust Hog Coal Mining Roof Bit Manufacturer

    Contact NowPDC 2 Wings Full Tips Bit,dust Hog Coal Mining Roof Bit ManufacturerGeneral Introduction PDC coal mining roof bit are mainly used to drill the roof and side supporting hole, the gas drainage, water infusion, geological exploration hole and grouting hole and so on for the coal mine seam, water conservancy and hydro-power, dam and roadway construction of bolt-mesh...Read More