... Technical Specifications and Machining Range of the Machine:1 . Product overviewBHQK580 CNC Machine For Steel pipe (Sucker Rod,Tubing,Drill ... thread. As professional Sucker Rod,Tubing,Drill pipe machine, the machine is perfectly suitable for Petroleum industry and Engeneering industry ... Centering pneumatic chuck1.2,.Rolling end face, R3.2 circular arc, unload groove.1.3, Rolling friction thread; ...