Corrosion-Resistant Titanium CNC Machining for Marine & Subsea Engineering
Custom precision titanium component manufacturing designed to survive extreme hydrostatic pressure, eliminate chloride pitting, and stop crevice corrosion in deep-sea oceanographic applications. Grade 2 and Grade 12 specialty titanium alloys.
Read more Show less
Multi-Axis CNC Milling — Deep-Sea Pressure Vessels, Instrumentation Housings & ROV Connector Blocks
Precision CNC machining of Grade 2 and Grade 5 Titanium for subsea pressure vessels, instrumentation enclosures, and ROV connector systems. Engineered for hydrostatic pressures exceeding 300 bar with corrosion-free performance in seawater environments.
Deep-Sea Pressure Vessels
Grade 2/5 Ti · 300+ bar · ASME PVHOSubsea instrumentation housings and pressure vessels must withstand extreme hydrostatic pressures while maintaining absolute seawater exclusion. Our precision machining of Grade 2 and Grade 5 Titanium delivers sealing surfaces with Ra ≤ 0.4 µm finish and O-ring groove tolerances that prevent leak paths at depths exceeding 300 bar.
Technical Implementation- O-ring groove dimensions to SAE AS568 — ±0.05 mm for consistent compression across temperature cycles
- Sealing surface finish Ra ≤ 0.4 µm — prevents seawater ingress at hydrostatic pressures exceeding 300 bar
- Pressure cycle testing to 1.5× rated depth — helium leak verification < 1×10⁻⁶ mbar·L/s
Connector Blocks & Through-Hull Fittings
±0.01 mm Positioning · Helium Leak TestedSubsea connector blocks and through-hull fittings require precise alignment of multiple sealing surfaces and pin locations. Our multi-axis CNC machining centers produce complex geometries with positional accuracy of ±0.01 mm, ensuring reliable mating of underwater mateable connectors.
Technical Implementation- Pin-to-pin spacing ±0.01 mm — ensures reliable alignment of multi-pin underwater mateable connectors
- Through-hole positioning ±0.02 mm — guarantees bolt-pattern compatibility with existing subsea infrastructure
- Tapered thread forms per API 5B — leak-proof connections for hydraulic and pneumatic control lines
Precision CNC Turning — Grade 12 Titanium Marine Fasteners & Crevice Corrosion Mitigation
Specialized precision turning of Grade 12 Titanium (Ti-0.3Mo-0.8Ni) for marine fasteners and splash-zone hardware.
Grade 12 Titanium Turning
CNC Turning · Ti-0.3Mo-0.8Ni · Marine FastenersGrade 12 Titanium (Ti-0.3Mo-0.8Ni) is engineered for aggressive marine environments where standard titanium alloys may experience crevice corrosion.
Technical Implementation- Ra ≤ 0.4 µm thread finish — eliminates chloride pitting on fastener threads
- Multi-pass cold reduction — prevents hydrogen embrittlement in splash-zone fasteners
- 100% dimensional and surface finish inspection — verifies all marine fastener specifications
Subsea Valve Block Manufacturing
CNC Turning · Ra ≤ 0.4 µm · NPT Thread FormsSubsea hydraulic systems require valve blocks with corrosion-resistant fluid channels.
Technical Implementation- Mirror finish sealing surfaces — eliminate crevice corrosion sites at valve body interconnections
- NPT/API thread forms per ASME B1.20.1 for subsea hydraulic systems
- Dye penetrant inspection on all sealing surfaces — verifies zero surface-breaking defects
CMM Dimensional Validation — Hydrostatic Pressure Testing & O-ring Seal Validation
Absolute dimensional control via CMM validation to ASME Y14.5 GD&T, paired with documented hydrostatic pressure testing.
CMM O-ring Seal Validation
ZEISS CMM · ±1.9 µm · Sealing Surface GD&TSubsea seal integrity begins with geometrically perfect O-ring groove housings.
Technical Implementation- O-ring groove dimensional verification
- Sealing surface roughness Ra ≤ 0.4 µm — ensures O-ring compression control
- CMM reports provided with each lot per ASME Y14.5
Hydrostatic Pressure Testing
1.5× Rated Depth · Helium Leak Test · Documented CertificationEvery subsea component undergoes hydrostatic pressure testing to 1.5× rated depth pressure.
Technical Implementation- Hydrostatic pressure test to 1.5× rated pressure with documented certification
- Helium leak testing available for critical assemblies
- Test certificates traceable to component serial number
100% Material Traceability — EN 10204 3.1 MTR, Heat Number & Low-Iron Validation for Marine Service
Every marine-grade component is backed by EN 10204 3.1 Mill Test Reports with deep-etched heat numbers.
EN 10204 3.1 & Heat Number Marking
Every lot of Grade 2, Grade 5, and Grade 12 Titanium is certified with EN 10204 Type 3.1 documentation.
- Chemical composition per ASTM B265/B348 with Fe ≤ 0.20% for Grade 12
- Deep-etched heat number on every component for permanent traceability
- Digital archive for over 10 years — fully retrievable for regulatory audits
Galvanic Corrosion Prevention
In seawater, galvanic couples between dissimilar metals accelerate corrosion.
- Titanium is noble relative to stainless steel, copper, and aluminum
- Iron contamination control per NACE SP0198
- Dedicated tooling and coolant lines for marine-grade titanium
Ready for Certified
Marine & Subsea Titanium CNC Machining?
Submit your engineering drawings or CAD models for a complimentary Design for Manufacturability (DFM) analysis. Our engineering team will review your requirements and respond with a competitive quote within 24 hours.
Engineering response within 24 hours · CAD models accepted in STEP, IGES, STL formats
One Metal. One Focus. Infinite Precision.
Founded in 2011 in Baoji's Titanium Valley, BOZE Metal is dedicated exclusively to titanium — from raw material to precision engineering. AS9100D, ISO 13485 & ISO 9001 certified with 500+ clients across Aerospace, Medical & Motorsport industries, we deliver end-to-end precision titanium CNC machining with full material traceability from source to component.
Boze CNC Ti is the dedicated titanium manufacturing center of Baoji Boze Metal Products Co., Ltd.