Drill Rod Coupling, Metal Polished Rod Coupling, Spray Metal full size slim hole sucker rod coupling
3/4" 7/8" 1" T Sucker Rod Coupling SM SH FS Coupling
Spray Metal (SM)sucker rod couplings are manufactured from seamless steel pipes.
SM sucker rod couplings is a superficial hardening process where a nickel, chrome, boron and silicon based powder is applied on the base metal and is later melt, creating a hard,dense and uniform surface with a very low friction factor and high corrosion strength.
They are available in reduced slim hole (SH) diameters as well as normal full size (FS) for both API Class T(through-hardened) and Class SM (Spray Metal).
| Type | Grade | O.D (mm) | Minimum Lengh (mm) | Hardness | Weight (kg) | Standard |
| 3/4" | 19-T | 41.05~41.43 | 101.6~103.17 | 56-62HRA | 0.65 | API 11B |
| 7/8" | 22-T | 45.75~46.13 | 45.75~46.13 | 56-62HRA | 0.8 | API 11B |
| 1" | 25-T | 55.3.5~55.73 | 55.35~55.73 | 12-23HRA | 1.15 | API 11B |
3/4" 7/8" 1" T Sucker Rod Coupling SM SH FS Coupling packing
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