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 |
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 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.