Steel sucker rod is the major equipment for oilfield. Nomis provides grade C and grade D sucker rod which are made according to API Spec. 11B.
Grade C sucker rod is made of fine carbon-steel, 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 fine alloy steel with feature of high strength, better plasticity and long service life after heat treatment. Grade D sucker rod is suitable for deeper oil well in the non-corrosion or lightcorrosion medium.