These 5.5″ 23# 13CRS-110 VAM TOP couplings are made from Super 13 Chrome (UNS S41426), a quenched and tempered martensitic stainless steel designed for enhanced strength and corrosion resistance in sweet (CO₂) and mildly sour (H₂S) environments with moderate chloride content, rated up to 350°F. With improved resistance to localized corrosion and cracking over standard 13Cr and Modified 13Cr alloys, it’s well-suited for HPHT applications in deeper wells. The VAM TOP connection ensures a gas-tight metal-to-metal seal, offering exceptional reliability under high-pressure operating conditions.




