HIGH-PRESSURE METALLURGY FOR EXTREME SUBSEA & DOWNHOLE ENVIRONMENTS
Uncompromising corrosion resistance for HPHT operations. We stock and supply NACE MR0175/ISO 15156 compliant Duplex, Super Duplex, and Nickel Superalloys engineered for aggressive sour gas pipelines, offshore risers, and subsea Christmas tree manifolds.
SEVERE SERVICE METALLURGY
Offshore and downhole hydrocarbon production demands structural materials that mitigate catastrophic failure under hydrogen sulfide, high chloride salinity, and cyclic hydrostatic pressures exceeding 15,000 PSI. Our mill relationships and stringent ultrasonic and microscopic cleanliness protocols guarantee structural soundness throughout deepwater subsea completions.
NACE MR0175 / Sour Service Compliance
Certified materials resisting sulfide stress cracking (SSC), hydrogen embrittlement, and localized pitting in high-H2S, chloride-dense extraction zones.
HPHT Manifolds & Subsea Drilling
Ultra-high yield strength alloys with guaranteed Charpy V-notch impact toughness at -46°C (-50°F) for deepwater Christmas trees, flowlines, and downhole tools.
Pre-Tested 3.2 Traceable Inventory
Full heat-lot traceability with independent third-party witnessed inspection across Inconel 625, Monel 400, Duplex 2205, and Super Duplex 2507. Every pipe, fitting, flange, and forged bar is accompanied by calibrated EN 10204 3.2 test certificates.
PRIMARY OIL & GAS METALLURGY SPECIFICATIONS
| UNS / DIN Norm | Applicable ASTM Standards | Target Offshore & Subsea Applications | PREN Value | |
|---|---|---|---|---|
Super Duplex 2507 UNS S32750 / EN 1.4410 |
— | ASTM A240, A276, A479 / A790 | Subsea flowlines, high-pressure valves, riser manifolds, offshore heat exchangers | ≥ 42.0 |
Duplex 2205 UNS S31803 / S32205 / EN 1.4462 |
— | ASTM A240, A182 / A789 | Sour crude pipelines, topside process vessels, separator internals, gas gathering systems | ≥ 35.0 |
Inconel® 625 UNS N06625 / 2.4856 |
— | ASTM B443, B444 / AMS 5599 | Subsea riser cladding, HPHT wellhead components, high-temperature exhaust stacks | ≥ 50.0 |
Monel® 400 & K-500 UNS N04400 / N05500 |
— | ASTM B127, B164 / B865 | Non-magnetic drill collars, marine splash-zone sleeves, valve stems, pump shafts | N/A (Ni-Cu) |
Incoloy® 825 UNS N08825 / 2.4858 |
— | ASTM B424, B425 / B163 | Downhole sour gas tubing, sulfuric acid handling lines, oil well calorifiers | ≥ 31.0 |
Need Custom OD/WT Sizing or NORSOK M-650 Qualified Forgings?
Our engineering metallurgy desk responds within 4 working hours with detailed availability, heat-treatment certifications, and mill dispatch timetables for subsea projects globally.