Emily PIPE offers a complete range of marine & offshore-grade titanium alloys including Gr.2, Gr.5, Gr.7, Gr.9 and Gr.12, engineered to solve the most severe corrosion and structural challenges in marine environments. Our titanium tubes and bars provide exceptional resistance to seawater, salt spray, crevice corrosion and biofouling, delivering 10-20 times longer service life than stainless steel in offshore applications.
As a leading China-based titanium alloy manufacturer with over 20 years of experience, we supply precision-manufactured titanium products fully certified to ASTM, ASME, NACE and all major classification society standards. From FPSO process piping to offshore wind foundations and deep-sea exploration equipment, our marine-grade titanium alloys offer the optimal balance of performance and cost-effectiveness for global offshore industry customers.
| Item | Details |
|---|---|
| Executive Standards | 1. International Material Standards: ASTM B337 (Seamless Pipe), ASTM B338 (Welded Pipe), ASTM B348 (Bar/Rod)
2. Offshore Standards: NACE MR0175/ISO 15156-3, API 5LC, API 6A 3. Marine Standards: ABS, DNV, LR, BV, CCS, RINA 4. Pressure Vessel Standards: ASME Section VIII Div.1 5. Testing Standards: ASTM E8, ASTM G48 (Pitting/Crevice), ASTM E243 (Eddy Current) |
| Material Grades | 1. Titanium Grade 2 (UNS R50400): Commercially pure titanium, most widely used marine grade, excellent corrosion resistance
2. Titanium Grade 5 (UNS R56400): Ti-6Al-4V, high-strength alloy for structural components 3. Titanium Grade 7 (UNS R52400): Ti-0.2Pd, superior crevice corrosion resistance in low-pH and sour environments 4. Titanium Grade 9 (UNS R56320): Ti-3Al-2.5V, balanced strength and formability, ideal for hydraulic tubing 5. Titanium Grade 12 (UNS R53400): Ti-0.3Mo-0.8Ni, excellent high-temperature corrosion resistance |
| Chemical Composition (Weight %) | Grade 2: Ti≥99.2, O≤0.25, Fe≤0.30, C≤0.08, N≤0.03, H≤0.015
Grade 5: Ti=Balance, Al5.5-6.75, V3.5-4.5, Fe≤0.30, O≤0.20, C≤0.08, N≤0.05, H≤0.015 Grade 7: Ti=Balance, Pd0.12-0.25, O≤0.25, Fe≤0.30, C≤0.08, N≤0.03, H≤0.015 Grade 9: Ti=Balance, Al2.5-3.5, V2.0-3.0, Fe≤0.25, O≤0.15, C≤0.08, N≤0.03, H≤0.015 Grade 12: Ti=Balance, Mo0.2-0.4, Ni0.6-0.9, O≤0.25, Fe≤0.30, C≤0.08, N≤0.03, H≤0.015 Note: Palladium addition in Gr.7 significantly improves crevice corrosion resistance in stagnant seawater |
| Mechanical Properties (Annealed State) | Grade 2: Tensile≥345MPa, Yield≥275MPa, Elongation≥20%, HB≤120
Grade 5: Tensile≥895MPa, Yield≥825MPa, Elongation≥10%, HB≤300 Grade 7: Tensile≥345MPa, Yield≥275MPa, Elongation≥20%, HB≤120 Grade 9: Tensile≥620MPa, Yield≥520MPa, Elongation≥15%, HB≤200 Grade 12: Tensile≥485MPa, Yield≥380MPa, Elongation≥18%, HB≤160 Max Service Temp: Gr.2/7: 315℃; Gr.9: 315℃; Gr.12: 425℃; Gr.5: 400℃ |
| Dimensional Tolerance | 1. Seamless Pipes/Tubes: Ø6-50mm ±0.1mm; Ø50-150mm ±0.2mm; Wall thickness ±0.05-0.1mm
2. Welded Pipes: Ø10-600mm ±0.15mm; Wall thickness ±0.08mm 3. Round Bars/Rods: Ø6-50mm ±0.1mm; Ø50-300mm ±0.2mm; Ø150-300mm ±0.3mm 4. U-Bend Tubes: Bend radius ±0.5mm; Ovality at bend ≤3% of OD 5. Length Tolerance: ±2mm (1-6m); custom lengths up to 12m available |
| Why These Materials Are Used in Marine & Offshore Industry | 1. Unmatched Seawater Corrosion Resistance:
– Immune to chloride-induced pitting, crevice corrosion and stress corrosion cracking in all marine zones – Corrosion rate <0.01mm/year in full immersion seawater, 1/10 of 316L stainless steel – Resists corrosion in splash zone, tidal zone and marine atmosphere – Eliminates the most common failure mode in offshore piping systems 2. Natural Biofouling Resistance: – Titanium oxide surface inhibits the attachment of barnacles, mussels and algae – Maintains clean heat transfer surfaces for 5+ years without cleaning – Eliminates the need for toxic antifouling coatings, complying with MARPOL regulations – Reduces fuel consumption by maintaining clean hull and piping surfaces 3. Superior Sour Service Performance: – NACE MR0175 certified for H₂S partial pressures up to 100 psi – Resists sulfide stress cracking (SSC) and hydrogen-induced cracking (HIC) – Ideal for offshore oil and gas production with medium sulfur content – Gr.7 provides additional protection in severe sour environments 4. Excellent Strength-to-Weight Ratio: – 40% lighter than steel while maintaining equivalent strength – Reduces structural weight, increasing payload capacity and stability – Critical for floating structures like FPSOs and offshore wind turbines – Lowers transportation and installation costs 5. Superior Cost-Effectiveness: – While initial cost is 3-5x higher than 316L, 10-20x longer service life reduces total cost of ownership by 60-80% – Eliminates costly annual maintenance and dry dock inspections – No need for protective coatings, reducing lifecycle costs |
| Application Scenarios and Corresponding Customers | 1. FPSOs and FLNGs:
– Applications: Seawater cooling systems, produced water handling, process piping, heat exchangers, fire water systems – Customers: ExxonMobil, Shell, BP, Chevron, TotalEnergies, CNOOC 2. Offshore Oil and Gas Platforms: – Applications: Wellhead components, Christmas trees, flowlines, manifolds, umbilicals, valve bodies – Customers: TechnipFMC, Schlumberger, Halliburton, Baker Hughes, Aker Solutions 3. Commercial and Naval Vessels: – Applications: Seawater intake piping, condenser tubes, heat exchangers, propeller shafts, rudder components – Customers: Maersk Line, MSC, CMA CGM, US Navy, Royal Navy 4. Offshore Wind Farms: – Applications: Foundation fasteners, turbine internals, transformer cooling systems, subsea cables, corrosion-resistant cladding – Customers: Ørsted, Vestas, Siemens Gamesa, Goldwind, Envision Energy 5. Deep-Sea Exploration Vessels: – Applications: ROV/AUV pressure hulls, sampling systems, subsea instrumentation, hydraulic systems – Customers: Woods Hole Oceanographic Institution, China Ocean Mineral Resources R&D Association |
| Customer Requirements in This Industry | 1. Performance Requirements:
– Seawater Corrosion Resistance: Must resist corrosion in all marine zones for 30+ years – Biofouling Resistance: Must maintain clean surfaces to ensure operational efficiency – Sour Service Resistance: Must meet NACE MR0175 requirements for H₂S – Fatigue Resistance: Must withstand cyclic loads from wave action and vibration – Weldability: Must be easily weldable while retaining corrosion resistance 2. Quality and Compliance Requirements: – Classification Society Certification: Must provide ABS, DNV, LR or equivalent certification – NACE Certification: Must provide NACE MR0175 certification for sour service – Full Traceability: Must provide complete traceability from titanium sponge to finished product – Third-Party Inspection: Must allow inspection by classification society surveyors – Material Certification: Must provide EN 10204 3.2 mill test reports 3. Manufacturing Requirements: – Precision Dimensional Tolerances: Must meet tight tolerances for proper fit and assembly – Surface Quality: Must have smooth, defect-free surfaces to prevent corrosion initiation – Internal Quality: Must be free from inclusions, porosity and segregation (100% UT/ET verified) – Consistent Quality: Must have uniform chemical composition and mechanical properties across all batches – Customization: Must produce custom sizes and shapes per customer drawings |
| Common Related Products in This Industry | 1. Titanium Seamless Pipes/Tubes: For seawater cooling, hydraulic lines and heat exchangers
2. Titanium Welded Pipes: Cost-effective solution for large-diameter process and seawater piping 3. Titanium U-Bend Tubes: Custom bent tubes for offshore heat exchangers and condensers 4. Titanium Round Bars/Rods: For valve stems, pump shafts, fasteners and machined components 5. Titanium Forgings: Custom forgings including flanges, valve bodies, pump casings and manifolds 6. Titanium Fasteners: Bolts, nuts, screws, studs and washers for offshore applications 7. Titanium Welding Materials: ERTi-2, ERTi-5, ERTi-7, ERTi-9 and ERTi-12 welding wires 8. Titanium Sheets and Plates: For tank liners, splash zone cladding and structural components 9. Titanium Machined Components: Precision-machined valves, fittings and pump parts 10. Custom Fabricated Assemblies: Pre-fabricated piping spools and heat exchanger bundles |
| Why Choose Us (Emily PIPE) | 1. 20+ Years of Marine & Offshore Titanium Expertise: We have supplied titanium products to over 200 offshore projects worldwide
2. Full NACE, API and Classification Society Certification: Our production line meets the strictest offshore industry standards 3. Complete Grade Range: We offer all five marine titanium grades in one place, simplifying your supply chain 4. Full-Process Quality Control: We implement 100% ultrasonic, eddy current and hydrostatic testing on all products 5. Advanced Manufacturing Capabilities: We use state-of-the-art equipment to produce precision titanium products 6. Strategic Inventory Management: We maintain 300+ tons of marine titanium inventory to support urgent offshore requirements 7. Global Logistics Network: We have experience delivering to remote offshore locations worldwide 8. One-Stop Solution: We provide complete solutions from raw material supply to pre-fabricated assemblies |
| Supplementary Industry Information | 1. Comprehensive Test Reports: Each batch comes with a full MTR including chemical analysis, mechanical properties and NDT results. Corrosion test reports available upon request
2. Full Material Traceability: Every product has a unique heat number and complete traceability documentation 3. Value-Added Processing: We offer precision cutting, CNC bending, welding, end processing and surface finishing services 4. Emergency Response Service: We provide 24/7 emergency support for offshore shutdown requirements 5. Market Growth: The global marine & offshore titanium market is projected to grow at a CAGR of over 7% through 2030, driven by offshore wind farm construction and deep-water oil & gas development 6. Sustainability Commitment: All our titanium products are manufactured using sustainable practices and are 100% recyclable |
| Packaging | 1. Plastic Caps: All tube/bar ends are protected with heavy-duty polyethylene caps with internal sealing rings to prevent contamination
2. Waterproof Film: Each product is individually wrapped in waterproof and anti-corrosion film 3. Bundle Packing: Products of the same size are bundled with steel straps and wooden spacers to prevent contact damage 4. Wooden Case: Bundles are packed in sturdy fumigated wooden cases with steel reinforcement for international shipping 5. Export Standard Packing: All packaging complies with international export standards and ISPM 15 regulations 6. Marking: Each package is clearly marked with product specifications, heat number, batch number, quantity and destination |
Looking for marine-grade titanium pipe, bar or forging? Send us your size, quantity and application requirements. We will provide a suitable solution and competitive quotation.