Sihe Steel
Sihe Steel
Engineered for extreme offshore environments, oil & gas processes, and heavy industrial applications in Nigeria.
As Africa's premier oil producer, Nigeria's industrial landscape is shifting toward deepwater exploration and localized refining capabilities. Projects in the Niger Delta, offshore Bonga, Egina, and the development of major petrochemical hubs like the Dangote Refinery demand pipeline materials that can endure aggressive chloride exposure, high pressure, and corrosive sour gases (H2S).
Alloy 2507 (UNS S32750) Super Duplex stainless steel represents the benchmark material for subsea control lines, chemical injection lines, and heat exchangers operating in these conditions. With its high pitting resistance equivalent number (PREN > 42), it outperforms standard 316L and Duplex 2205 under warm marine environments characteristic of the Gulf of Guinea.
Liaocheng Sihe Stainless Steel Material Ltd provides the local market with direct access to advanced coiled tubing technology, removing the logistics risks associated with complex subsea umbilical assemblies and chemical injection lines.
Our long-length continuous coiled tubing (up to 32,800 feet / 10,000 meters) eliminates the need for orbital welds, mitigating weak points in high-pressure oilfield lines.
Highly resistant to stress corrosion cracking (SCC) in harsh marine and industrial environments typical of Port Harcourt, Warri, and Lagos coastal manufacturing zones.
Understanding the metallurgical differences that deliver information gain and chemical stability for your operations.
| Alloy Grade | UNS Designation | PREN (Min) | Yield Strength (MPa) | Pitting & Crevice Corrosion Risk | Application Suitability in Nigeria |
|---|---|---|---|---|---|
| Super Duplex Alloy 2507 | UNS S32750 | > 42 | 550 | Extremely Low | Deepwater offshore, high chloride sea water, acid processing |
| Duplex 2205 | UNS S31803 / S32205 | 34 | 450 | Medium (High risk > 60°C) | Standard flowlines, shallow water pipelines, onshore storage |
| Austenitic 316L | UNS S31603 | 24 | 220 | High in warm seawater | Freshwater distribution, low-pressure instrumentation |
| Nickel Alloy 825 | UNS N08825 | 31 | 240 | Low in sour wells | High H2S and CO2 downhole environments |
*PREN = %Cr + 3.3%Mo + 16%N. Values higher than 40 indicate exceptional resistance to localized marine pitting.
Standardized chemical properties and tolerance configurations compliant with ASTM, ASME, JIS, and EN protocols.
Established as a premier manufacturing pioneer from China, Liaocheng Sihe Stainless Steel Material Ltd operates six state-of-the-art production lines designed for high-precision coiled tubing, capillary tubing, and long-length seamless heat exchanger pipes.
Our commitment to rigorous international standards (ASTM, ASME, JIS, EN) is backed by advanced online bright annealing technology, which allows in-line softening treatment of stainless steel tubing to secure perfect mechanical consistency throughout the coil.
We perform 100% pneumatic testing, hydro-testing, eddy current examinations, and mechanical properties verification (tensile, hardness, flattening, flaring) to ensure zero defect delivery. Today, 80% of our production volume is exported globally, servicing critical oil exploration and petrochemical applications across 30+ countries including the USA, Germany, Spain, the Middle East, and growing hubs in West Africa.
We provide full traceability with certified documentation for every shipping batch deployed to Port Harcourt, Lagos, or Warri.
Bridging manufacturing precision with localized procurement services to simplify global supply routes.
Through computer-controlled cold drawing and polishing technologies, we ensure outer diameter tolerances within ±0.05mm, ideal for demanding hydraulic instrumentation manifolds.
Our export documentation process integrates with local regulatory mandates. We coordinate with inspection bodies to provide approved SONCAP certs and product testing data sheets.
Optimized seafreight shipping routes from Qingdao/Shanghai to Apapa Port, Tin Can Island, or Port Harcourt Onne Port, minimizing lead times and custom delays.
We supply a wide range of standard and specialized products tailored to your project requirements:
Designed to meet strict ISO quality parameters for Nigerian marine, geothermal, and oil refinery infrastructures.
Alloy 2507 and our specialty steels are widely utilized in major local industrial sectors.
Crucial commercial and technical queries regarding standard Alloy 2507 coiled tubes and importing processes to Nigeria.
Our prices are subject to change depending on material raw costs, global energy factors, and specific order parameters. We will send you an updated price list after your company contacts us with precise technical specifications (OD, Wall Thickness, continuous length requirements).
Yes, we require all international orders to have an ongoing minimum order quantity. For specific standard sizes, small test batches are negotiable. Please consult our sales department to discuss your target project's needs.
Absolutely. We provide complete manufacturing traceability. Documentation includes Certificates of Analysis/Conformance (EN 10204 3.1), raw material source certifications, hydrostatic test data, eddy current scan logs, and third-party inspection certifications where requested.
For custom production, lead time averages 20-30 days after receiving the advance deposit. Ocean shipping from Qingdao or Shanghai to Lagos (Apapa/Tin Can) or Port Harcourt (Onne Port) generally takes another 30-40 days. In urgent offshore maintenance cases, airfreight can be organized for small capillary tube orders.
We work with international payment structures: typically a 30% deposit in advance by T/T, with the remaining 70% balance paid against the copy of the Bill of Lading (B/L). We also accept secure L/C operations for large public refinery projects.
All tubing is wrapped, placed on custom heavy-duty steel or wooden reels, and protected with thick water-resistant shrink wrap. This ensures complete protection from rust and ocean environment humidity during long-distance seafreight transit to West Africa.
