L80 / N80 Seamless Casing Pipe

L80 / N80 Seamless Casing Pipe – Reliable Well Integrity for Deep Drilling

L80 and N80 seamless casing pipes are essential components for oil, natural gas, and geothermal wells. Manufactured from high-quality carbon or alloy steel through hot-rolled or cold-drawn seamless processes, they provide excellent collapse resistance, tensile strength, and durability in medium-to-deep, high-pressure, and mildly corrosive environments.

● High Strength & Toughness
N80 offers high yield strength and good toughness for conventional high-pressure wells. L80 delivers comparable strength with improved resistance to sulfide stress corrosion cracking (SSCC).

● Precision Dimensions
Seamless structure ensures uniform wall thickness and zero weld defects, fully compliant with API 5CT tolerance standards.

● Environmental Adaptability
L80 serves as a cost-effective alternative to C95 or P110 in H₂S or CO₂-bearing corrosive conditions.

● Ease of Connection
Supports BTC, LTC, STC, and premium threads for fast, reliable field make-up.

Production casing

Intermediate casing

Surface casing

Geothermal & shale gas wells

Full-process quality control – UT, ET, MT inspections from billet to finished pipe

Certified to API 5CT / ISO 11960

Customizable lengths, wall thicknesses, and thread types

Fast delivery and dedicated technical support

Whether you are a drilling operator or a tubular supplier, L80 / N80 seamless casing provides lasting, safe assurance for your wellbore integrity.

 

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