As the drilling industry evolves to accommodate the challenges of deep well and horizontal drilling techniques, more demand is being places on the maintenance of drill strings, and in particular the tool joints. Perhaps as little as 15 years ago, tool joints were protected quite adequately by tungsten carbide hardbanding. These hardbandings provided the maximum wear resistance for the tool joints, and because of the limited use of casing while drilling, casing wear was not an issue. As well bores become deeper and deviated, more casing was used and this became a serious target for wear by the tungsten carbide hardbanding.