high quality
reasonalble price
long lifetime

API Two-Way Globoidal Protection Sucker Rod Coupling

1)Deflection-proof and Abrasion-proof sucker rod coupling                       

2)Standard: API Spec 11B

                       Basic Material: AISI 5140 (40Cr)                           

Coat Material: Ni60A Alloy Coating

Coat Thickness: 0.01-0.02 in

Basic Hardness: HRC 16-23 (HRA 58-62)

Surface hardness: HRC 55-62

Metal coating hardness: 595 HV0.2

Hole rate: 2%

Life: More than 180days

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

Due to we're the special manufacturer, we can offer you the highest quality and the best price products, to build a long-term business relationship with you.

If you are interested in our products, pls contact us freely

. We are the manufacturer offering api sucker rod coupling in Shandong China.
All the rod coupling produced by api 11 b standard, these sucker rod coupling are very cost effective, including class sm sucker rod coupling, class t sucker rod coupling, sub sucker rod coupling, full size coupling, slim hole coupling.
They are available in 5/8”, 3/4”, 7/8”, 1”and 1-1/8”. Manufactured with high quality carbon steel aisi 5i40 /4135.
- Api coupling, class sm :
1. Material: aisi 5140 (40cr),
2. Standard: api spec 11b
3. Coat thickness: 0.01-0.02 in
4. Coupling diameter: 5/8 ",3/4",7/8",1",1-1/8"
5. Basic hardness: hrc 16-23
6. Min. metal coating hardness: 595 hv0.2 our new special products both-way protection globoidal sucker rod coupling full size sprey metal coupling with big chamfer we're the special manufacturer and the cost is much lower than some inter-trade enterprise, but we can supply more excellent quality, to build a long-term business relationship with you..