Corrosion-resistant Sucker Rod (Grade C, K, D, D Special, KD, HL, HY, KH and HS)

Description
Corrosion-resistant sucker rod is used for highly corrosive oil wells or gas wells. Its anti-corrosive treatment can prevent the inner material of sucker rod from corrosion, and reduce abrasion of the sucker rod. So it can extend the service life of anti-corrosion sucker rod and improve the working efficiency of oil wells and gas wells.

Features
High corrosion resistance is a main character of this kind of sucker rod. We have brought in EW wear resistance, heat resistance, anti-H2S and CO2 technologies to ensure the high corrosion resistance of oil well sucker rods. Besides, we also coat the surface of sucker rod with a kind of corrosion-resistant and high-strength polymer synthetic material to manufacture different grades of corrosion-resistant sucker rods of different grades and with various specifications. These anti-corrosion sucker rods can significantly improve the corrosion resistance of sucker rods, extend their service life and reduce customers’ operating costs.

Parameter

Technical Parameter of Coatings of Corrosion-resistant Sucker Rod
No.	Item		Criterion			Test Method
1	Appearance		Even, smooth; no orange peel, air bubbles and flow			Visual observation
2	Thickness of Film (μm)	Liquid	Anti-paraffin	≥ 80, ≤ 225		See Appendix A
			Anti-corrosion	125 to 225
		Powder	Anti-paraffin	≥ 80, ≤ 225
			Anti-corrosion	150 to 300
3	Holiday	Anti-paraffin	No requirement
		Anti-corrosion	No holiday			NACE TM 0384
4	Adhesion		≥ Class B			See Appendix B
5	Chemical Resistance Properties		10% HCI, normal temperature, 90d		No changes in the coating	Soaking method
			3.5% NaC1, normal temperature, 90d
			Crude oil, 80℃, 90d