2 1/4″ (57mm) Double Key Hollow Stem Auger

All 2 1/4″ (57mm) Double Key Hollow Stem Augers feature a continuous hardfaced flighting design, 3/8″ (9.5mm) thick on the outer edge with a 5″ pitch. The tool joints are made from 4142 alloy steel and feature single-bolt connections.


Specifications:

Hollow Stem Augers (HSA) are commonly used to set groundwater monitoring wells for environmental and geotechnical applications. With the option of an augerhead on Roschen ® machines you can turn 4.25 in. hollow stem augers with the same machine you had just been using for percussion probing.

Hollow Stem Auger (HSA)
Hollow Stem Auger is used primarily when the bore hole will not remain open. HSA consists of a Hollow Auger (4 ¼" ID). During drilling the center is filled with rods connected to a plug at the bottom bit.

Once desired depths is reached, the center rods and plug are pulled out. This leaves a cased hole for sampling or installations.

Solid Stem Auger (SSA)
Solid Stem Auger is the fastest and most effective way of retrieving samples in soft soil conditions.

By corkscrewing the Auger into the soil our drillers can retrieve a very accurate formation profile.

Solid Stem Auger (SSA) can also be used to set monitoring wells and install instrumentation in certain soil conditions.

 ROSCHEN GROUP

ROSCHEN Group has the world class advanced equipment like 12000 tons forging, metal processing plant, heat treatment workshop, numerical control plant, Advanced five-axis machining center, etc. professional technical and skilled team to ensure mining, mineral tools, equipment products quality stable and reliable.

ROSCHEN Group Limited is a manufactory with years of research and development for the mining, mineral tools, equipment. We are capability to produce high performance world class products and control excellent quality. Our main product includes tricone bit, diamond core bits, drill pipe, core barrel, TCI tricone bit, mill tooth tricone bit, RC hammer, DTH bit, etc.

ROSCHEN Manufactory PROCESS

ROSCHEN Sales Value Growing Up!

ROSCHEN'S MISSION

1. Strive to create and supply Best quality products for the industry that last longer than the average products.

2. Provide excellent service for our clients.  24 hour-7 days /week schedule to get our clients what they need – FAST.