Blast Hole Drill Steel in Fabricated and Integral Designs.
Fabricated Drill Steel design features tool joints made from steels selected specifically for each application. All tool joint material is inspected by ultrasonic means to assure product quality. All welds are made by select shielded arc methods and are post heated to remove residual welding stresses. Welds are machine blended to tool joint and tube and ultrasonically inspected. Axial alignments and concentricity of the fabricated assembly are held to a close tolerance. Wrench slots or flats are milled to suit the requirements of the drill. All rotary shouldered connections are treated for protection against galling in the break in period.
Integral Drill Steel is made from premium quality alloy steel bars. Bores are trepanned to sized that result in proper balance for the selected rotary shouldered connection. Concentricity and axial alignment of the connections to the drill steel are held to close machine tolerance. Wrench slots or flats are milled to suit the requirements of the drill.
When Ordering - Please Specify:
- Drill Rig Make/Model
- O.D. (Outside Diameter)
- Wall Thickness
- I.D. (Inside Diameter), if required
- Any special requests or modifications