Sihe Steel
Sihe Steel
Direct manufacturer supply pathways optimized for harsh sour gas fields, subsea umbilicals, and deep well control systems across Abu Dhabi and Dubai.
Incoloy 825 (UNS N08825 / W.Nr. 2.4858) is a nickel-iron-chromium-molybdenum-copper alloy designed for exceptional resistance to both oxidizing and reducing acids. For industrial procurement specialists in the United Arab Emirates, this alloy represents a critical component in ensuring structural lifespan and preventing catastrophic failures in offshore assets.
With the rapid development of ultra-sour gas fields like Hail and Ghasha, ADNOC projects necessitate CRA (Corrosion Resistant Alloy) piping systems that can withstand extreme partial pressures of hydrogen sulfide (H₂S), carbon dioxide (CO₂), and high-salinity chloride-rich formation waters. Our ASTM B423 and ASTM B704 compliant coiled tubing offers continuous-length integrity up to 10,000 meters, eliminating traditional orbital weld vulnerabilities.
Download Technical Whitepaper| Chemical Element | Alloy 825 % Composition Limit | Mechanical Performance Parameter |
|---|---|---|
| Nickel (Ni) | 38.0 - 46.0% | Tensile Strength: ≥ 586 MPa |
| Iron (Fe) | Balance (22.0% Min) | Yield Strength (0.2% Offset): ≥ 241 MPa |
| Chromium (Cr) | 19.5 - 23.5% | Elongation in 2 in. (50mm): ≥ 30% |
| Molybdenum (Mo) | 2.5 - 3.5% | Hardness (Rockwell B): ≤ 90 HRB |
| Copper (Cu) | 1.5 - 3.0% | NACE MR0175 Compliance: Sour Service Fit |
| Titanium (Ti) | 0.6 - 1.2% (Stabilized) | Intergranular Corrosion: ASTM A262 Practice C |
A premier manufacturer specializing in stainless steel coiled tube development, stainless steel polishing tubes, and seamless coiled tubing systems. Adhering strictly to international production standards such as GB, ASTM, ASME, JIS, and EN, our company serves as a vital tier-1 supply partner to heavy industrial markets.
We operate six high-efficiency production lines designed to process complex alloys including 304/304L, 316L, 321, 317L, 309S, 310S, INCOLOY 800, Duplex 2205, Super Duplex 2507, Incoloy 825, and Inconel 625. Our products are widely utilized in military applications, semiconductors, biopharmaceuticals, subsea oil explorations, aerospace hydraulic systems, and thermal heat exchangers.
We pioneered the online bright annealing thermal processing system, enabling inline steel tube softening treatment without oxidation. This delivers clean, high-ductility, ultra-smooth inner and outer surfaces critical for precision instrumentation.
Contact our Technical Sales TeamLiaocheng Sihe manufactures all materials under strict ISO-9001 and API guidelines, guaranteeing compatibility with critical process infrastructures.
Ensuring seamless downhole, umbilical, and process system installation via precision customization and validation protocols.
We process standard and exotic materials including TP304, TP316L, Duplex 2205, and Incoloy 825, with specialized custom diameters ranging from 6.35mm up to 25.4mm.
Our workshop integrates advanced bending, spiral/helical coiling, and precision cold drawing. Perfect for space-restricted offshore heat exchangers.
Automated high-speed laser cutting, mechanical circular sawing, and hydraulic straightening guarantees strict tolerance control for automatic orbital welding systems.
We deploy continuous hydrogen-shielded online bright annealing to optimize grain structures and yield excellent surface passivation, preventing scaling during operations.
Tailored flanged connections and swaged designs for seamless integrations in automotive manifolds, chemical transfer lines, and hydraulic manifolds.
Every coil undergoes 100% pneumatic testing, hydro-testing, eddy current examinations, and mechanical properties evaluation (tensile, flattening, flaring, and hardness).
Our coiled tubes are selected by leading global EPC contractors for critical subsea and surface installations.
Comprehensive answers regarding logistics, technical standards, customization options, and regional procurement parameters.
Our prices fluctuate according to global metal commodity indices (LME nickel and molybdenum spots) and fabrication requirements. We provide an updated pricelist upon receiving detailed size schedules, wall thickness parameters, and continuous length demands. Contact us for direct-from-mill pricing.
Yes, we require all international shipments to have an ongoing minimum order quantity. For specific custom alloys such as Alloy 825 or Inconel 625, the MOQ depends on the cross-sectional size. Small test batches or specific trial sizes can sometimes be consolidated into production runs.
We provide full material traceability packages, including EN 10204 Type 3.1 or 3.2 Mill Test Certificates (MTC), Certificate of Origin, NACE MR0175/ISO 15156 compatibility reports, ultrasonic testing results, and hydrostatic validation charts.
For standard stocked specifications, dispatch takes approximately 7 days. For custom mass production runs of Incoloy 825, lead times are 20 to 30 days following deposit verification and final drawing approval. Delivery is arranged via Jebel Ali Port or Khalifa Port.
Our typical terms are a 30% advanced deposit with the remaining 70% balance payable upon submission of the Bill of Lading (B/L) copy. We accept telegraphic transfers (T/T), L/C, and major secure global payment channels.
We package our products using reinforced steel-frame wooden drums, lined with heavy polymer vapor barriers to prevent marine atmospheric oxidation. Heavy ocean transit frames are standard for all shipments destined for Gulf regions.
Explore our wider range of corrosion resistant alloys, duplex configurations, and high precision capillary tubing systems.
Ensuring full coverage of utility systems, heat recovery networks, and downhole injection solutions.
As global energy architectures become increasingly complex, downhole temperatures and pressures climb. In deep offshore exploration wells, hydrogen embrittlement and chloride-induced stress corrosion cracking (SCC) present significant operational risks. Incorporating Alloy 825 coiled tubes into process loops, downhole safety valves, and subsea control umbilicals significantly mitigates these failure modes.
Our bright annealing processing technology prevents intergranular sensitization by keeping carbon levels extremely low, maintaining a homogeneous austenitic matrix. This optimization maintains high ductility and yield ratios, ensuring our coils perform reliably under repeated spooling cycles during deployment.
We align our fabrication protocols with ADMA-OPCO, ZADCO, and ADNOC specifications. Our coils are delivered directly to logistics hubs in Jebel Ali, Mussafah Industrial Area, or directly to port sites, ready for immediate offshore deployment.
Get in touch with our applications engineering department. We offer customized sizing calculations, direct metallurgical assessments, and competitive direct-from-mill pricing schedules.
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