◆ Sucker rod centralizer
　　Description: Sucker rod is used to prevent the pumping rod centralizer and columns and tubing wall friction.
 Main technical parameters

Suitable diameter rod	16mm	19mm	22mm	25mm
Suitable tubing	21／2in-3in
Connecting rod specifications	CYG16 CYG19 CYG22 CYG25

◆ Twisting card sucker rod centralizer 　　Description: This company produces the twisted card sucker rod centralizer, with installation and removal easy, high strength, high toughness, low creep, low water absorption, anti-corrosion oil, wear characteristics. Compared with the plug-formed stabilizer, less prone to fall off, the card pumps and so on. Is the major oil production in the ideal of a sucker rod centralizer.

Main technical parameters

Specification	Inner Diameter（mm）	Outer Diameter（mm）	Length（mm）	Operating Temperature	Fatigue life (10 000)
KZZ(NK)-16×58	φ16	φ58	175	120-160℃	40
KZZ(NK)-19×58	φ19	φ58	175	120-160℃	40
KZZ(NK)-22×58	φ22	φ58	175	120-160℃	40