146mm Symmetric Concentrix Ovburden Drilling Tools

• Material: Alloy Steel
• Brand: Prodrill
• Air Pressure: 20 Bar
• Color: Gold, Red
• Hammer Type: 3inch, 4inch
• Outer Dia. of Casing Tube: 114 ~ 168mm
• Model NO.: 146mm
• Inner Dia. of Casing Tube: 101 ~ 148mm
• Wall Thichness of Casing Tube: 6.5 ~ 10.5mm
• Processing Type: Forging
• Transport Package: Wood Package
• Specification: CE
• Trademark: PRODRILL
• Origin: China
• HS Code: 84671900
• Production Capacity: 10000pec/Months

Product Description

Description:
Advantage:
- Straight Holes and Fast Penetration Rate.
- Less Torque in all ground conditions.
- Easy System to lock and Unlock Ring.
- Drilling at any angle required.
- More Holes and Low investment.
Concentric Casing System Ring Bit is the latest new and simple product line designed and manufactured by OCMA DrillTech for drilling through overburden with casing.

It can be used in all ground conditions and drilling applications as: Foundation construction, Piling construction, Water Well and Geothermal, Tunneling and Horizontal drilling.

 

Overburden Drilling Systems-Concentric Casing
Technical Data
Casting Tube		Reamed Hole Dia(mm)	Casting Shoe Inner Dia	DTH Hammer Type(E)	Drill Pipe(mm)
Outer Dia(mm)	Inner Dia(mm)
168	148-156	185	140	HD55 QL50	89
178	158-166	195	150	HD55 QL50	89
183	163-171	193	154	HD55 QL50	89
194	174-182	211	166	HD65 QL60	114
219	199-207	237	193	HD65 QL60	114
245	225-233	260	210	HD85 QL80	114
273	253-257	308	241	HD85 QL80	114
325	305-309	378	281	SD10 NUMA100	114