Polished Rod
Polishrod is a kind of special sucker rod connected with sucker rod and beam hanger.It is at the top of sucker rod, need to bear the most strength, so withbigger diameter and higher steel grade than sucker rod, and thesurface is very smooth.
Spray-metal PolishedRodhas good mechanical properties and strong corrosion resistance, the rods aresprayed with nickel powder as per API 11B requirement by advanced overall sprayprocess, which can assure the coating is combined with base material firmly. Itcan effectively avoid the coating peeling problem caused by friction betweenpolished rod and stuffing box. Rod surface is polished to achieve roughness Ra0.8
