3 wings overburden drilling system

...drilling 219mm new design 3 middle wings symmetric casing drilling bit Product category: Overburden symmetric drilling tools Matched hammer: Hammer DHD360 Matched casing pipe OD: 219mm Water well drilling new design 3 middle wings symmetric casing drilling bit Advantages 1. Straight Holes and Fast Penetration Rate 2. Less Torque in all ground conditions 3. Easy System to lock and Unlock Ring 4. Drilling......

... (or Symmetrix) Overburden Casing System with Blocks Model: 1) Casing Shoe + pilot bit + 2 pcs Blocks; Or 2) Casing Shoe + pilot bit + 3 pcs Blocks; Or 3) ......

...be used at the next hole.This is particularly design for shallow holes, as is often the case in water well drilling, geothermal wells and for shallow micro-piling work. Eccentric casing drilling system is ideal for short holes in consolidated overburden....

... is recommended to drill in rock formation where contains some ovals and fractures. Design Principles: The stable and reliable working performance and the less vibration of drill rig. Different Structures: Concentric system with ring bits, wing and blocks....

...Drilling Internal Casing Cutter / Integral Operation Pwt Casing Internal Casing CutterDetails: Casing System is an ingeniously designed eccentric drilling system which consists of a pilot bit and reamer “wing”. The pilot bit protrudes beneath the casing pipe and, as the drill rotates, a specially designed “wing” folds out and acts as a reamer. This creates the space for the casing pipe to advance. Once through the overburden......