Our sucker rod couplings are up to API Spec 11B standard, including class SM coupling, class T coupling, Sub coupling, Full Size coupling, Slim Hole coupling. All of the couplings are availbale in 5/8", 3/4", 7/8", 1" and 1 1/8" and manufactured with high quality Carbon steel AISI 5140. The surface alloy thermal spray coating process of our spray metal coupling has reached the international advanced level.

API Class SM Full Size sucker rod coupling

7/8"Full Size Spray Metal Sucker Rod Coupling

 1) Material: Seamless Alloy Steel 40Cr (AISI 5140)
 2) Standard: API Spec 11B
 3) Main specification:
   OD:1-13/16" (46.04mm)
   ID: 1-3/16"(30.16mm)
   Length: 4" (101.6mm)
   Weight: 0.6kg
 4)Smoothness: 3.1×10-3
 5)Coat Thickness(in): 0.01in ~ 0.02in
 6)Basic hardness: HRC 16-23
 7)Surface Hardness: HRA 58-62
 8)Intergrate intension(Mpa): 484
 9)Hole rate: 2%
 10)Min. Hardness of the layer: 595HV0.2
 11)Min. Tensile Strength: 655 Mpa
 12)Operating Temperature: -1000~400
 13)Life: > 180 days

OUR NEW SPECIAL PRODUCTS
Both-way Protection Globoidal Sucker Rod Coupling
Full Size Spray Metal Coupling with Big Chamfer

If any of our sucker rod coupling interests you, please feel free to contact us at any time for further information!

We are the special manufacturer, supply more excellent quality products in reasonable price , with the hope to build a long-term business relationship with you.