Manufacturing of hollow sucker rod starts with pipe workpiece. Manufacturing volume is 41 000 of hollow sucker rods per year.
Sucker rod head is hot shaped. Metal workpiece is placed to a special and unique in its way purpose-made machine, «needled» and widened under high temperature and pressure.
Thread of sucker rods is rolled on – no thread cutting. It allows avoiding sucker rods breaking because of thread failure.
During quality control besides geometrical parameters our specialists check threads and tightening torque of each coupling.
The final stage of sucker rod manufacturing is tension testing. After that sucker rods are conserved and packed for the future shipping or storing.