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, […]

Nickel alloy casing and tubing is a Ni-based CRA OCTG product used for oil and gas wells where conventional carbon steel or standard OCTG grades are no longer reliable enough against corrosion and cracking. Instead of relying on corrosion allowance alone, this material route uses high-alloy nickel-based grades such as N08028, N08535, N08135, N08825, and […]