Sucker rodcouplings are a key component in the successfulperformance of a sucker rod string. By minimizing the wear andcorrosion of couplings, the life of the sucker rod string isincreased. This can substantially decrease service and repaircosts. Our products has set an industry standard with the design ofthe Premier Performance Sucker Rod couplings including both APIClass T (through hard) and API Class SM (spray metal)designs.

We can produce API Class SM andAPI Class T .Our sucker rod couplings are very cost-effective,including class SM sucker rod coupling, class T sucker rodcoupling, 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".

Technical Parameters

API  7/8" Spraymetal Sucker Rod Coupling

 1) Material: SeamlessAlloy Steel 40Cr (AISI 5140)
 2) Standard: API Spec11B
 3) Mainspecification: 
    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: HRC16-23
 7)Surface Hardness: HRC55-62
 8)Intergrate intension(Mpa):484
 9)Hole rate: 2%
 10)Min. Hardness of thelayer: 595HV0.2
 11)Min. Tensile Strength:655 Mpa
 12)Operating Temperature:-1000~400
 13)Life: > 180days

Any question please contactme.