Oil & Gas
🛢️ Deepwater Drilling Risers & Components
Long tubular sections (15-25m each) with threaded/fastened couplings, buoyancy module attachment rings, choke/kill line ports
What is Deepwater Drilling Risers & Components?
🛢️ Deepwater Drilling Risers & Components represents a complete system of precision titanium components engineered for Oil & Gas applications. Long tubular sections (15-25m each) with threaded/fastened couplings, buoyancy module attachment rings, choke/kill line ports The system integrates 8 distinct component types manufactured through 3 specialized processes.
Key manufacturing processes for this system include Ring forging radial-axial for oil & gas geometry, CNC turn-bore operation for net-shape tolerance, TIG welding autogenous for net-shape tolerance, Hydrostatic pressure test for net-shape tolerance, CNC turn-bore operation with 0.5mm corner radius, each selected and qualified to meet component-specific requirements.
Engineering & Design Principles
Material: Grade 5 (Ti-6Al-4V) offers the best combination of high strength, low density (45% lighter than steel), and corrosion resistance for deepwater risers. Eliminates need for cathodic protection.
Form: Seamless tube or rolled-and-welded plate is standard for riser sections. Threaded couplings are machined from heavy-wall tube or bar stock.
Standards & Material Specifications
Standards: API 5L / ASTM B348 Grade 5, STA condition, 100% UT + hydrostatic test, sour service certified per NACE MR0175
Engineering Solution Blueprint
Valves / Fluid Control Components
Energy · Chemical · Hydrogen · Oil & Gas
1 Part Feature Analysis
Slender shaft, small diameter, high aspect ratio, precision conical/spherical sealing surface
- ⚠️ High-pressure sealing
- ⚠️ High-frequency switching impact
- ⚠️ Media corrosion
- ⚠️ Hydrogen embrittlement
- ⚠️ Micro-leakage
2 Material Selection Rationale
Grade 5 Ti-6Al-4V — General alpha-beta alloy, high strength
Grade 5 (Ti-6Al-4V) offers high strength (yield>=830MPa) and good toughness with superior hydrogen embrittlement resistance vs CP-Ti. Use TC4 ELI for biocompatibility requirements.
3 Form Selection Rationale
Round Bar / Rod — for turning, fasteners
Slender shafts suitable for Swiss-type turning from bar stock, 60-70% material utilization, 50% cost reduction vs plate cutting + welding.
4 Manufacturing Process & Services
Core Processes:
Toll Processing Services:
Process Pitfalls:
- ⚠️ Aspect ratio >10:1 causes tool deflection; use step machining or steady rest
- ⚠️ Taper sealing surface requires Ra<=0.2um; ultra-precision grinding needed
5 Procurement Specifications
Annealed (A), UT Class B, Ra<=0.4um, sealing surface Ra<=0.2um
Manufacturing Process Flow
5-axis CNC milling centers provide simultaneous multi-axis interpolation for complex titanium components. The ability to tilt the tool relative to the
Coordinate Measuring Machine (CMM) inspection provides quantitative dimensional verification of titanium components against GD&T specifications per AS
Gas Tungsten Arc Welding (GTAW/TIG) for titanium uses a non-consumable tungsten electrode with argon shielding at the torch face, trailing shield, and
Components in This System
| Component | Material |
|---|---|
| Titanium Downhole Production Tubing | Grade 5 Ti-6Al-4V ELI |
| Titanium Downhole Wireline Barrel | Grade 5 Ti-6Al-4V ELI |
| Titanium Offshore Firewater Nozzle | Grade 5 Ti-6Al-4V ELI |
| Titanium Pipeline Repair Sleeve | Grade 5 Ti-6Al-4V ELI |
| Titanium Seawater Strainer Housing | Grade 5 Ti-6Al-4V ELI |
| Titanium Subsea Chemical Injection Mandrel | Grade 5 Ti-6Al-4V ELI |
| Titanium Subsea Manifold Swivel Flange | Grade 5 Ti-6Al-4V ELI |
| Titanium Subsea Wellhead Valve Block | Grade 5 Ti-6Al-4V ELI |
Frequently Asked Questions
What titanium grades are used in Deepwater Drilling Risers & Components systems?
What manufacturing processes are used for Deepwater Drilling Risers & Components?
What quality standards apply to Deepwater Drilling Risers & Components components?
What industries use Deepwater Drilling Risers & Components?
Can you provide DFM feedback for Deepwater Drilling Risers & Components designs?
Engineering Trends
- ▸ Process: Tube rolling & longitudinal seam welding (for large diameters)
- ▸ Process: CNC machining of threaded couplings
- ▸ Process: Full-length UT inspection
Related Manufacturing Capabilities
These specialized processes support Deepwater Drilling Risers & Components component manufacturing.
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 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 Titanium Manufacturing Center is operated by Baoji Boze Metal Products Co., Ltd.
Certifications verified by ASTM International titanium material specifications (B265, B348, B381, F136, F2924) with full EN 10204 3.1 mill test certification. Our quality system is operated under AS9100D by Baoji Boze Metal Products Co., Ltd.