API Oilfield Polished Rod/Sucker Rod
Specifications:
Pony Rods/ Sucker Rod
Standard:API Spec 11B
Size: 5/8"-1 1/8"
Grade: K,C,D and HL
Material: Carbon Steel
Pony Rods/ Sucker Rod
Grade C sucker rod: Moderate strength, not susceptible to sulfide stress cracking, suitable in sour medium.
Grade D sucker rod: Made of quality heat treated steel alloy, with high tensile and yield strength; suitable for non-corroding or mildly corroding environment.
Grade K sucker rod: With good corrosion resistance in H2S, CO2 and NaCl media, superior tensile strength.
Grade HL and HY sucker rod: High strength; structure and size matching with grade D sucker rod; withstanding 966-1, 136 MPa (140, 000-164, 720 psi); suitable for deep and large displacement wells.
Mechanical Properties of Sucker Rods:
Grade | Yield strength MPa (psi) | Tensile strength | Elongation % | Reduction of area % |
K | 372 (53, 940) | 589-793 (84, 970-114, 985) | 13 | 60 |
C | 414 (60, 030) |
620-793 (89, 900-114, 985)
| 13 | 50 |
D | 586 (84, 970) |
793-965 (114, 985-139, 925)
| 10 | 50 |
HL | 793-862 | 966-1136 | ≥12 | 45-55 |
HY | MPa (psi) | MPa (psi) | HRC Surface | HB Core |
| 540 (78, 300) | 980-1, 176 (142, 100-170, 520) | ≥42 | ≥224 |
General Dimensions and Tolerances for Polished Rod
Nominal Size | 1-1/8 (in) | 1-1/4 (in) | 1-1/2 (in) | ||||
in. | mm | in. | mm | in. | mm | ||
Outside Diameter | Dimension | 1.125 | 28.58 | 1.25 | 31.75 | 1.50 | 38.10 |
Tolerances | +0.005 | +0.13 | +0.005 | +0.13 | +0.005 | +0.13 | |
Nominal Diameter of Pin-thread | Dimension f or reference | 0.938 | 23.83 | 1.188 | 30.18 | 1.375 | 34.93 |
1.063 | 27.00 |
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Note: sizes of sucker rods with which used | Nominal Dimension (for reference) | 5/8 |
| 7/8 |
| 1 |
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3/4 |
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Note:Standard lengths | Dimension | ft 22,26,30 | m 6.7,7.9,9.1, 11.0,12.2 | ft 22,26,30 | m 2.4,3.4,4.9, 6.7,7.9,9.1, 11.0,12.2 | ft 22,26,30 | m 2.4,3.4,4.9, 6.7,7.9,9.1, 11.0,12.2 |
