Detailed introduction to coupling sucker rod coupling:

Yunsheng sucker rod couplings are up to API Spec 11B standard, including class SM sucker rod coupling, class T sucker rod coupling, Sub sucker rod coupling, Full Size sucker rod coupling, Slim Hole sucker rod coupling, are availbale in size of 5/8", 3/4", 7/8", 1" and 1-1/8". With over 30000PCS monthly capacity. Manufactured with high quality Carbon steel AISI 5I40. Our surface alloy thermal spray coating process of our spray metal sucker rod coupling has reached the international advanced level. 

API Sucker Rod Coupling 

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 

8. Type: Full size/Slim Hole 

9. Coupling diameter: 5/8 ", 3/4", 7/8", 1", 1-1/8"