Seamless API Casing

API 5CT Well Casing & OCTG Casing Pipe Product Introduction Well casing is the protective backbone of every oil and gas well, maintaining borehole integrity and isolating formations throughout the well's lifecycle. Our API 5CT casing pipes are engineered to withstand extreme underground pressures, corrosive environments, and installation stresses—ensuring safe, reliable well construction from surface to reservoir. Manufactured under strict API 5CT standards, these seamless pipes deliver the collapse resistance, tensile strength, and connection reliability that drilling contractors depend on. With grades ranging from standard J55 to high-collapse P110, we provide the right material for every well condition, from shallow vertical wells to deep offshore horizontals. Why Our Casing Stands Out ✓ Pressure & Collapse Resistance: Engineered to exceed formation pressure requirements, preventing wellbore failure✓ Sour Service Certified: L80, C90, and T95 grades meet NACE MR0175 for H₂S environments✓ Premium Connections: API threaded couplings (STC/LTC/BTC) and premium semi-flush options ensure gas-tight seals✓ Seamless Strength: Single-piece construction eliminates weld-related failure points✓ Full Traceability: Heat number tracking and EN 10204 3.1/3.2 mill certificates for every joint✓ Supply Chain Speed: Regional stock of common sizes (9-5/8", 13-3/8") plus mill-direct custom orders Applications Onshore and offshore oil & gas wells Geothermal energy production Shallow and deepwater drilling Horizontal and directional wells Sour gas and high-pressure reservoirs