Sucker rod and pony rod
Steel sucker rod is one of major equipment for oilfield. Grade C and Grade D sucker rods are our main products producing in accordance with API Spec 11 B.
Grade C sucker rod is made of fine carbon steel SSYD-1 ( equivalent to AISI 1526). 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 sulphuric stress cracking.
Grade D sucker rod is made of Ni-Mo alloy stell 30 CrMoA ( equivalent to AISI 4130 ). 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.
Grade K sucker rod is made of fine Ni-Mo alloy steel 20Ni2MoA (equivalent to AISI 4620). It has strength of suitable corrosion-resistant plastic and is suitable for light loads and corrosive medium light wells.
Mechanical Properties
Grade | Yield Strength Rel(Mpa) | Tensile Strength Rm(Mpa) | Percentage Elongation A(%) | Contraction Percentage of Area Z (%) | Impact Toughtness |
C | ≥414 | 620-793 | ≥12 | ≥55 | ≥70 |
D | ≥620 | 794-965 | ≥10 | ≥50 | ≥58.8 |
K | ≥414 | 620-793 | ≥12 | ≥55 | ≥70 |
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sucker rod for pumping oil