API SM sucker rod couplings for oilfield equipment
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Sucker rod couplings are a key component in the successful performance of a sucker rod string. By minimizing the wear and corrosion of couplings, the life of the sucker rod string is increased. This can substantially decrease service and repair costs. Our products has set an industry standard with the design of the Premier Performance Sucker Rod couplings including both API Class T (through hard) and API Class SM (spray metal) designs.
| sucker rod couplings | 5/8" | 3/4" | 7/8" | 1" | 1 1/8" |
| Class | SM FS | SMFS | SMFS | SMFS | SMFS |
| O.D.(mm) | 38.1 | 41.28 | 46.04 | 55.56 | 60.33 |
| I.D.(mm) | 23.81 | 26.99 | 30.16 | 34.93 | 39.69 |
| Length(in) | 1.5*4.0 | 1.625*4.0 | 1.812*4.0 | 2.187*4.0 | 2.375*4.5 |
| Material | AISI 5140 Steel Alloy | ||||
| Hardness | 56-62HRC | ||||
| Weight(kg) | 0.56 | 0.6 | 0.74 | 1.13 | 1.29 |
| Standard Reference | API SPEC 11B/ISO9001 | ||||
| Tensile Strength Rm(N/mm2) | ≥655 | ||||
| Yield Strengh Rel(N/mm2) | ≥405 | ||||
| Percentage Elongation A(%) | ≥24 | ||||
| Contraction Percentage of Area Z(%) | ≥48 | ||||
Any question please contact us.