Male/Female (M/F) rod, Speed rod M/F drill steel is an alternative to couplings sleeves to include the female part of the threaded connection as an integral part of the drill steel. M/F drill steel provides more rigid connections and is easier to uncouple and handle. The service life also tends to be better than with separate couplings.
Advantages of drilling with M/F rods:
A: Easy handling
B: quicker uncoupling
C: tighter connections
D: the potential to drill straighter holes
E: longer service life.
MF-rod R32-Round32-R32, length 3 4 5 6 10 12 14 ft MF Rod T38-Round39-T38, length 4 5 6 10 12 14 ft MF Rod T45-Round46-T45, length 5 6 10 12 14 20 ft MF Rod T51-Round52-T51, length 6 12 14 20 ft MF Rod ST58-Round60-ST58, length 12 14 20 ft
For Extension Rod and M/F steel process, the below two different types of heat treatmentare used to strengthen high speed and powerful percussive drill string components to maximize their performance and reliability. Longer steel larger in diameter, conventional extension steel, Hexagonal and round cross sections are available. 1.Carburization is a process used to harden the entire rod surface both internally and externally to strengthen and extend the life of the rod. 2. High Frequency Inductionis a process where only the thread ends of the rod are hardened to lengthen thread life.