ZC Steel Pipe — OCTG & Line Pipe for Oil & Gas

What We Supply

OCTG — Casing & Tubing

API 5CT casing and tubing in grades N80, R95, L80, C90, T95, P110, C110, Q125. Premium connections available.

Premium Connections

Metal-to-metal seal premium connections — ZC-1 through ZC-6 series. Gas-tight, API 5C5 CAL IV qualified. Independent patents.

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Seamless Line Pipe

API 5L seamless line pipe in grades X52 through X80, PSL1 and PSL2. Sour service HIC qualification available.

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Welded Line Pipe

ERW, LSAW and SSAW welded line pipe in API 5L grades X52–X80 for onshore and offshore pipeline projects.

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Why ZC Steel Pipe

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API & ISO Certified

API 5CT, API 5L, ISO 11960 and ISO 3183 certified manufacturing. EN 10204 3.2 MTC on all orders.

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Patented Premium Connections

Independent patents on ZC-1 through ZC-6 premium connection series. API 5C5 CAL IV gas-tight qualification.

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Global Export Experience

Completed projects across Africa, the Middle East, South America and Southeast Asia. Third-party inspection available.

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Order-to-Make Flexibility

Non-standard grades, wall thicknesses and lengths available. Sour service, HPHT and CRA grades on request.

Technical Resources

OCTG

API 5CT C110 Casing Pipe — Specifications, Sour Service & Supplier Guide

C110 casing pipe: API 5CT specs, hardness limits, NACE MR0175 sour service compliance, C110 vs T95 vs Q125 comparison. Request a quote from ZC Steel Pipe.

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API 5CT C90 Casing Pipe — Sour Service Specifications & Selection

C90 casing: 90 ksi yield, 25.4 HRC max, sour service approved. Specs, C90 vs L80 vs T95, chemistry, NACE MR0175 guidance. PSL-2. Request a quote.

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API 5CT Q125 Casing Pipe — Specifications, Types & Application Guide

Q125 casing pipe: API 5CT specs, Type 1–4 subtypes, Q125 vs C110 vs P110, deep well applications. Seamless Q125 supplier. Request a quote from ZC Steel Pipe.

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