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Specifications

Yunsheng is the manufacturer offering API sucker rod couplings in Shandong China. All the rod couplings are produced in fully accordence with API Spec 11B standard and manufactured with high quality Carbon steel AISI 5140. Our sucker rod couplings are very cost-effective, 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. They are available in 5/8", 3/4", 7/8 ",1"and 1-1/8". 

API T sucker rod couplings are manufacturer in high temperature result in high tenslie and fatigue.

Technical Parameters
API  7/8" Spray Metal Sucker Rod Coupling
 1) Material: Seamless Alloy Steel 40Cr (AISI 5140)
 2) Standard: API Spec 11B
 3) Main specification: 
     Full Size:     OD:1-13/16" (46.04mm)
                         ID: 1-3/16"(30.16mm)
                         Length: 4" (101.6mm)
                         Weight: 0.74kg
     Slim Hole:   OD:1-5/8" (46.04mm)
                         ID: 1-3/16"(30.16mm)
                         Length: 4" (101.6mm)
                         Weight: 0.52kg
 4)Smoothness: 3.1×10-3
 5)Coat Thickness(in): 0.01in ~ 0.02in
 6)Basic hardness: HRC 16-23
 7)Surface Hardness: HRC 55-62
 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 
 If you are ineresting with our product please contact us.