Casing & Tubing

OCTG, Tubing in API 5CT Grade J55/K55, N80, C90, C95, P110, Ends EUE & Preimium ends

API 5CT Casing Pipe in Grade J55/K55, N80-1, N80Q, C90, C95, P110, Ends BTC, EUE & Preimium

What is Conductor Pipe Conductor pipe (also referred to as conductor casing, structural casing, or marine conductor in offshore scopes) is the first and largest-diameter casing string installed to stabilize the seabed or near-surface section during offshore oil and gas drilling. Its role extends beyond simply penetrating the seabed: it establishes mechanical stability in unconsolidated […]

A drilling riser is a critical piece of subsea equipment that connects the subsea wellhead and blowout preventer (BOP) to the surface drilling rig or platform. Unlike conductor pipe, which is a permanent foundation element, the drilling riser functions as a temporary, pressure-containing conduit during drilling operations. Its primary role is to provide a continuous […]

What Is a Premium Connection Special Thread and Why Use It？ A premium connection (special thread) is an engineered OCTG connection designed to deliver gas-tight sealing and predictable make-up integrity under combined loads—internal pressure, temperature cycling, bending in deviated/horizontal wells, compression, and running torque. In practice, final series selection should be aligned to size/grade, service […]

Vacuum Insulated Tubing (VIT) – OCTAL Technical Overview Thermal-Control Tubing for Steam Injection, Heavy Oil Production, Deep water Wells & Geothermal Systems Maintaining temperature inside the well-bore is essential for a wide range of modern oil & gas and geothermal operations. Heat loss not only reduces production efficiency but also increases risks such as wax deposition, […]