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.
GRADE D CARBON
Designed for non-corrosive or effectively inhibited wells with moderate loads. Manufactured in 4130 Mod. Steel.
GRADE D ALLOY
Designed for moderate to high loads in non-corrosive or effectively inhibited wells. Manufactured in AISI 4142 steel.
GRADE KD
Designed for corrosive wells where inhibiting is recommended, with moderate loads. Manufactured in AISI 4720 Mod. Steel.
GRADE D SPECIAL
Designed for corrosive wells with high and moderate loads where inhibition is recommended. Manufactured in AISI 4330 Mod. Steel.
Grade | Trade Size
in (mm) | Nominal diameter of ext. thread in (mm) | Nominal diameter of coupling | Coupling for slim hole OD mm (in) | Coupling OD mm (in) | Wrench square W¡ÁL mm (in) | Length series m (ft) |
C | 5/8 (15.9) | 15/16 (23.8) | 5/8 (15.9) | 31.8 (1-1/4) | 38.1 (1-1/2) | 22.2×31.8 | 7.62 (25) |
D | 3/4 (19.1) | 1-1/16 (26.99) | 3/4 (19) | 38.1 (1-1/2) | 41.3 (1-5/8) | 25.1×31.8 | 9.14 (30) |
K | 7/8 (22.2) | 1-3/16 (30.16) | 7/8 (22.2) | 41.3 (1-5/8) | 46 (1.812) | 25.4×31.8 | 0.6 (2), 1 (3) |
H | 1 (25.4) | 1-3/8 (34.93) | 1 (25.4) | 50.8 (2) | 55.6 (2.187) | 33.3×38.1 | 2 (6), 3 (10) |
1-1/8 (28.6) | 1-9/16 (39.7) | 1-1/8 (28.6) | 57.2 (2-1/4) | 60.3 (2.375) | 38.1×41.3 |
