Based on the spray metal sucker rod coupling, sucker rod coupling with big chamfer increases a big chamfer at both ends, greatly reducing the contact area with the pipeline, but also slowing down the wear. So it can not only protect itself better, but also the pipeline.   so that the life of the coupling and pipeline are significantly prolonged, and the operating costs of oil reduced, oil production increased.

API Sucker Rod Coupling with Big Chamfer

1)Standard: API Spec 11B

2)Basic Material: AISI 5140 (40Cr),
3)Coat Material: Ni60A Alloy Coating

4)Coat Thickness: 0. 01-0. 02 in
5)Basic Hardness: HRC 16-23 (HRA 58-62)

6)Surface hardness: HRC 55-62
7)Metal coating hardness: 595 HV0. 2

9)Hole rate: 2%

10)Smoothness: 3. 1*10^-3

11)Type: Full size/Slim Hole

12)Coupling diameter: 5/8 ", 3/4", 7/8", 1", 1-1/8"

13)Life: 180days