under reamer system for overburden drilling

Brand Name:MING

Model Number:MRS219mm

Place of Origin:CHINA

Product name:219mm MRS Wiggle reamer symmetric casing drilling bit in mining OD of casing pipe: 219mm They are designed for economic cost of drilling in simultaneous casing advancement. The wings are retracted by reverse rotation. Product components: 1. ...

Brand Name:KSQ

Place of Origin:China

...Drilling Tools Eccentric Casing Overburden Drilling System Eccentric Reamer System Step-by-step 1. When drilling starts, the reamer swings out and reams the pilot-hole wide enough for the casing tube to slide down behind the drill bit assembly. 2. When the required depth is reached, rotation is reversed carefully, whereupon the reamer swings in , allowing the drill...

Brand Name:ROSCHEN

Model Number:RSOD114~609

Place of Origin:China

... slope anchorage, tunnel collapse tube shed support, pebble layer high pressure rotary jet and other fields 1. Eccentric Reamer System Step-by-step 1) When drilling starts, the reamer swings out and reams the pilot-hole wide enough for the casing tube to

Brand Name:Pangolin

Place of Origin:HeBei China

Hydraulic Rock Drilling Tools Reaming Bits DTH Hole Opener Introduction Big hole high air pressure DTH hammer using in water well, oil, gas and construction drilling Eccentric overburden drilling Equipment DTH hammer drill bit manufacturer DTH drill bit...

Brand Name:JCDRILL

Model Number:All Models

Place of Origin:China (Mainland)

...Overburden DTH Drilling Tools Eccentric Reamer System Description The eccentric reamer drill is an overburden drilling system designed for conditions where a cased hole is required. Collapsing holes tend to make overburden drilling expensive, with lost drilling equipment and down time. The eccentric designed bit rotates outward and drills...

Brand Name:SOLLROC

Model Number:ODEX drilling system

Place of Origin:China

...hole wide enough for the casing tube to slide down behind the drill bit assembly. 2. When the required depth is reached, rotation is reversed carefully, whereupon the reamer swings in , allowing the drill bit assembly to be pulled up through the casing. 3.

Model Number:HD35

Place of Origin:China

Brand Name:Super Diamond

ccentric Overburden Drilling Odex 5" dth drilling hammer system / water well drill bit for water well / ODEX is an excellent option when unconsolidated formations are too dense or cobbly for Auger Drilling. ODEX is a down-hole air hammer system that is ...

Place of Origin:China

Brand Name:Jinquan

Model Number:Threaded & Tapered

... a drilled hole ahead of the bottom of the casing. The casing is then simultaneously advanced by a percussive force applied to either the top or bottom of the casing. As the hole is advanced, the drill cuttings are normally removed by air and travel up the