Roschen's water well drilling rigs are designed for safety, reliability, and productivity with products to serve all of your drilling needs. Roschen has a rich history in the water well drilling rig market that spans over 50 years and counting. As water is our most precious resource and the global demand for water increasing each year, Roschen takes pride in offering solutions to meet this growing demand.

4 1/4″ (108mm) Double Key Hollow Stem Auger for soil sampling

4.25 inch Hollow Stem Augers for soil sampling and groundwater monitoring

All 2 1/4″ (57mm) Double Key Hollow Stem Augers feature a continuous hard faced flighting design, 3/8″ (9.5mm) thick on the outer edge with a 5″ pitch.

The minimum hollow stem auger sizes recommended for installation of 2-inch diameter casing is 4.25 inches; however, larger hollow stem auger sizes may be necessary. The Environmental Protection Agency recommends the inner diameter of the auger be 3 inches to 5 inches greater than the outer diameter of the casing.

A drill pipe is a tubular steel pipe with threaded connections on both ends. It is a critical component in the process of drilling for oil and natural gas. The primary purpose of drill pipes is to transmit drilling fluid (commonly known as drilling mud) and torque from the surface to the drilling bit at the bottom of a wellbore during oil and gas exploration and production activities.

ROSCHEN Group Ltd. specializes in the development, production and sales of exploration drilling tools as well as providing drilling solutions and services. ROSCHEN is a national advanced technology enterprise, one of the drafters of geological drilling tool standard of China, Germany, Australia award of second prize of National Science and Technology Progress in global market.

ROSCHEN only choose the best steel tubes in the market to manufacture our rods and pipes. Spot check will be conducted after the steel tubes delivered to company. We will make sure the compositions and specifications match the inspection report form the suppliers.