What We Supply
OCTG — Casing & Tubing
API 5CT casing and tubing in grades N80, R95, L80, C90, T95, P110, C110, Q125. Premium connections available.
View specs →
Premium Connections
Metal-to-metal seal premium connections — ZC-1 through ZC-6 series. Gas-tight, API 5C5 CAL IV qualified. Independent patents.
View specs →
Seamless Line Pipe
API 5L seamless line pipe in grades X52 through X80, PSL1 and PSL2. Sour service HIC qualification available.
View specs →
Welded Line Pipe
ERW, LSAW and SSAW welded line pipe in API 5L grades X52–X80 for onshore and offshore pipeline projects.
View specs →Why ZC Steel Pipe
API 5CT, API 5L, ISO 11960 and ISO 3183 certified manufacturing. EN 10204 3.2 MTC on all orders.
Independent patents on ZC-1 through ZC-6 premium connection series. API 5C5 CAL IV gas-tight qualification.
Completed projects across Africa, the Middle East, South America and Southeast Asia. Third-party inspection available.
Non-standard grades, wall thicknesses and lengths available. Sour service, HPHT and CRA grades on request.
Technical Resources
OCTG Marking and Thread Protectors: What the PO Buys You and What to Check at the Rack
API 5CT 11th Ed gives you Class B protectors and a 3-month transit coating automatically. What to specify on the PO, and what to check on arrival.
Read article → OCTGWhat Drives the Price of OCTG Casing and Tubing
The ranked drivers that set the price of OCTG casing and tubing — tonnage, grade, route, connection, coating, testing — and which levers a buyer controls.
Read article → OCTGOCTG Purchase Specification: What a Mill Needs to Quote Casing and Tubing
The nine line items every OCTG RFQ needs for an accurate casing and tubing quote — grade, weight, connection, drift, service, and certification.
Read article →Engineering Tools
Tell us your well depth, pressure, temperature and H₂S conditions — we'll recommend the right grade, PSL level and connection type.
Try the selector →API 5CT casing dimensions, API 5L line pipe grades, pressure calculator and ASME B31.8 design pressure calculator.
View spec tables →Need a quote?
Tell us your specifications and we'll respond within one business day.
Request a Quote