for Hard Rock Rotary Mining Well Water Step Drilling Tools 3 or 4 Wings Blades PDC Tungsten Carbide Tooth Drag Bit Matrix Bits

• Customized: Non-Customized
• Standard: DIN
• Length: Taper-length
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: diameter 4 7/8 inch
• Type: Twist Drill Bit
• Material: Solid Carbide
• Usage: Well Drilling, Mining
• Bit Dia.(mm): Diameter 4 7/8 Inch
• Screw Thread Diameter: 2 3/8 Inch
• Wing: 4
• Transport Package: Carton
• Specification: diameter 4 7/8 inch
• Trademark: ZZUP
• Origin: Zhuzhou, Hunan, China
• HS Code: 820900100
• Production Capacity: 10000000PCS/Month
• Package Size: 5.00cm * 5.00cm * 5.00cm
• Package Gross Weight: 4.500kg

Product Description

For hard rock rotary mining well water Step drilling tools 3 or 4 wings blades PDC tungsten carbide tooth drag bit matrix bits 




      The drilling methods are basically auger drilling method, flushing method, impact Percussion drill, Rotary drill, Core drill,Non-core drill, Rotary-Percussion drill, Hand Auger,Flight Auger,Wash Boring and Clay Cutter and so on.

       According to different terrain, environment and actual conditions, through detailed planning such as observation and evaluation, plus judgments and constraints (including human resources and equipment, etc.), decide which drilling method to use.

      The drilling tool is composed of an active drill pipe, a drill pipe, a core pipe, a reamer and a drill bit at the bottom end, and if necessary, a sedimentation pipe or a drill collar is also added on the core pipe. The function of the drilling tool is mainly to transmit the drill bit pressure and rotary torque to the drill bit during the drilling of the rock formation, and to send drilling flushing fluid to the bottom of the hole to collect the rock core.