Steel sucker rods are the main equipment in oil fields. We offer C-grade, D-grade, K-grade, KD grade, HL grade, HS grade, and special alloy sucker rods, all manufactured in accordance with API Spec 11B. The C-grade sucker rod is made of high-quality carbon steel, with moderate strength, good plasticity, and good corrosion resistance. C-grade sucker rods are suitable for sulfur-containing media environments and are insensitive to sulfur stress cracking.