This 7.625″ 35.8# 13CR-80 TSH BLUE SC R3 casing is made from 13 Chrome (L80 Type 13Cr), a quenched and tempered martensitic stainless steel engineered for corrosion resistance in CO₂-rich and mildly sour (H₂S) environments up to 300°F. It offers reliable performance in moderate chloride conditions, commonly used in intermediate and production casing strings. The TSH BLUE SC premium connection provides a metal-to-metal seal with excellent gas-tight integrity and mechanical strength, ideal for challenging downhole casing applications.




