Equipment for oil production

The couplings for sucker rods are manufactured from structural carbon and alloy steels.

By outer diameter the couplings are subdivided into:

• full size
• smaller diameter

Depending on the kind of treatment the couplings are subdivided into:
 

• heat-treated - T ;
• hardened by high frequency currents - S

Produced categories Д, К, Е, Л of nominal diameters 60, 73,89 mm.

Intended for service in any climatic conditions.