Stainless steel hollow bar in a wide range of sizes and grades. RDST's program of hollow bar includes several grades of austenitic stainless steel as well as duplex stainless steel. Hollow bar sizes range from outside diameter 32 to 273 mm (1.26 to 10.75 in.)
Excellent machinability
Most grades of RDST's hollow bar are available as stainless steel with excellent and consistent machining properties for increased cutting speeds, reduced tool wear and set-up times.
Top-hammer rock drill Steel rods
Drill steel developed for the manufacturing of top-hammer rock drill rods, available in various steel grades.
The drill steel is characterized by a number of properties that enable efficient production:
High fatigue strength and toughness
High resistance to wear and permanent distortion
Close tolerances (for automated manufacturing process)
Uniform response to heat treatment
Uniform straightness (eliminating the need for straightening)
RDST's rock drill steel can be supplied as hollow or solid, hot-rolled, round or hexagon bar.