The sucker rod is a steel rod that used to make up the mechanical
assembly between the surface and downhole components of a rod pumping
system. The product conforms to API
Specification 11B (Oil extraction rod Standard) and other related
standard, authorized to use the API monogram. All sizes of sucker rod (standard,
heavy, polish rod) which conform to API specification latest version 11B
are available in grade K, C, D and HL.
advanced production line crack detecting, quenching, the continuous
overall tempering and sand blasting processes to achieve higher mechanical
strength ability with overall good performance. 2¡¢The thread is cut by the
special-purpose numerical control lathe which keeps the rod body still
when cutting the threads. The special process could ensure the high
precision of the thread with better reliability and life-span.