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Steel sucker rod is one of the major equipment for oilfield. Our grade C and grade D sucker rods are made according to API Spec. 11B.
Grade C sucker rod is made of fine carbon-steel. Grade C sucker rod is made of fine carbon-steel. It is featured by moderate strength, good plasticity and better corrosion-resistance. Grade C sucker rod is suitable for sour medium environment where they are not susceptible to sulphurice stress cracking.
Grade D sucker rod is made of fine alloy steel. It is featured by high strength, better plasticity and long service life after heat treatment. Grade D sucker rod is suitable for the deeper oil well in the non-corrosion or light- corrosion medium.
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| SIZE (in) |
ROD D. (in) |
THREAD D. (in) |
ROD
LENGTH (ft) |
| 5/8 |
5/8(+0.007,-0.014) |
1 5/16 |
26.25
25
Pony Rod |
| 3/4 |
3/4 (+0.008,-0.016) |
1 1/16 |
| 7/8 |
7/8 (+0.008,-0.016) |
1 3/16 |
| 1 1 |
(+0.009,-0.018) |
1 3/8 |
| 11/8 |
11 /8 (+0.010,-0.020) |
1 9/16 |
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| GRADE |
YIELD
STRENGTH
σs (Mpa) |
TENSILE
STRENGTH
σb (Mpa) |
PERCENTAGE
ELONGATION
δ(%) |
CONTRACTION
PERCENTAGE
OF AREAΨ(%) |
IMPACT
TOUGHNESS
αk(J/cm2) |
| C |
≥500 |
620-793 |
≥12 |
≥55 |
≥60.8 |
| D |
≥620 |
794-965 |
≥10 |
≥50 |
≥58.8 |
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Main Technical Parameters: