How to use air core bits

How to use air core bits

Harlsan > News The efficiency of an air core drilling program in certain ground strata can be improved with the right equipment and people. In some instances the drilling can be carried out with a faster drilling rate by using an air core bit. The alternate is...
Harlsan’s Guide to RC Drilling

Harlsan’s Guide to RC Drilling

Harlsan > Uncategorised Basics of Reverse Circulation (RC) Drilling – What is RC Drilling? Reverse Circulation, or RC, drilling uses drill rods with inner and outer tubes & is sometimes referred to as Dual wall or Dual Tube Drilling. Reverse circulation is...