Hot! 219mm Powerroc DTH Concentric Drill Bit Casing Drilling

Name: Hot! 219mm Powerroc DTH Concentric Drill Bit Casing Drilling
Brand: Hunan Powerroc Mining Technology Co., Ltd
SKU: 1999947191

Hunan, ChinaHunan Powerroc Mining Technology Co., Ltd

US$800.00-2,000.00

1 Piece

Sample price:US$700.00/piece.Request sample

Product profile

Customization

Available

Customized

Standard

ISO 9001

Model NO.

CCS-219

Length

Taper-length

Type

Center Drill Bit

Material

Tungsten Carbide

Usage

Wood Drilling, Well Drilling, PCB Drilling, Metal Drilling, Masonry Drilling, Casing Drilling

Block Type

Concentric Retractable Blocks

Cutter Type

Tungsten Carbide Inserts

Casing Compatibility

219mm Casing Pipe

Hammer Compatibility

DHD / SD / Ql Series

Recommended Rpm

20-40 Rpm

Transport Package

Fumigation Free Solid Wood Case

Specification

Diameter: 219mm

Trademark

PowerRoc

Origin

China

HS Code

84314310

Production Capacity

2, 500 Units/Year

Key features

Simultaneous drilling and casing system advances casing flush with borehole wall, preventing collapse in unstable ground.

Stop hole collapse in overburden; concentric block design ensures smooth casing advancement in one pass.

Field data shows 30% faster casing advancement in gravel and boulders compared to eccentric systems.

Ideal for water well drilling, micro piling, slope stabilization, and foundation work.

Company profile

Hunan Powerroc Mining Technology Co., LtdHunan, China

Business Type: Manufacturer/FactoryNearest Port: CNZOS, CNSHA, CNSZXAverage Response Time: ≤0.53h

About Our Factory & Business Background

AddressMingcheng Lvgu Smart Industrial Park, Renmin East Road, Changsha, Hunan, China

Registered Capital2,000,000 RMB

Average Lead TimePeak Season Lead Time: one month Off Season Lead Time: one month

Our Production Capability & Technical Expertise

Main ProductsMining Products

Our Industry Experience & Global Business Record

Main MarketsSouth America, Africa, Eastern Asia, Eastern Europe, Mid East, Southeast Asia, Western Europe

Product Q&A

Q:How does the concentric block system work?

The blocks expand during drilling to advance the casing, and retract when pulling back, allowing the bit to pass through the casing.

Q:What is the advantage of concentric over eccentric systems?

Concentric systems provide better stability in straight holes and are easier to retrieve in fractured ground conditions.

Q:What formations is this concentric bit best suited for?

It performs best in gravel, boulder, overburden, and fractured rock formations where casing is required.

Q:Can this bit be used with different hammer types?

Yes, it is compatible with DHD, SD, and QL series hammers. Please specify your hammer type when ordering.

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