Metal 3D Printing for Marine & Offshore Engineering
Revolutionizing maritime supply chains with on-demand additive manufacturing. From propellers to pump housings—printed, certified, and delivered.
DNV · BV · Lloyd’s
Up to 5+ Meters
Days, Not Months
Overview
The Maritime Manufacturing Challenge
In deep sea and offshore sectors, equipment failure isn’t just an inconvenience—it’s a critical operational risk. Traditional supply chains can’t keep up with the demands of remote fleets and extreme environments.
Extreme Corrosion
Components must withstand constant exposure to saltwater, humidity, and high pressure in the harshest oceanic conditions.
Logistical Nightmares
Sourcing spare parts for vessels in international waters can take months, leading to costly demurrage and fleet downtime.
Large & Obsolete Parts
Many marine components are massive, and casting molds for older vessels often no longer exist. OEM sourcing becomes impossible.
Our Additive Manufacturing solutions bridge the gap between port and vessel, transitioning you from physical warehousing to a Digital Inventory.
What We Print
Key Applications
Two distinct production streams engineered to address the full spectrum of marine vessel needs.
Large-Scale Structural Components
- Propellers & Blades — Bronze or stainless steel, printed without molds
- Rudder Systems & Stocks — Custom heavy-duty steering components
- Deck Equipment — Crane hooks, winches, and structural brackets
- Hull Repair Patches — Certified steel plates for emergency reinforcement
Complex Functional Parts
- Heat Exchangers — Optimized lattice, up to 40% weight reduction
- Valves & Pump Housings — Monolithic printing eliminates leakage points
- Impellers — Complex geometries impossible to cast
- Obsolete Spare Parts — Reverse engineered from legacy components
Features
Our Manufacturing Technologies
We deploy the right technology for the right part size and complexity—ensuring optimal results every time.
Wire Arc Additive Manufacturing (WAAM)
Best for: 1m to 5m+ PartsUses an electric arc to melt metal wire, layer by layer. Offers a high deposition rate, low material cost, and the ability to produce near-net-shape large structures like propellers and structural beams.
Laser Powder Bed Fusion (LPBF / SLM)
Best for: Small to Medium PartsA high-power laser selectively melts metal powder. Delivers extreme precision (±0.05mm) and is capable of creating internal cooling channels and lightweight lattice structures.
Materials
Marine-Grade Materials
Metal powders and wires meeting rigorous offshore standards for ductility, tensile strength, and corrosion resistance.
| Material Family | Specific Grade | Marine Application Benefit |
|---|---|---|
| Duplex Stainless Steel | Duplex 2205 / Super Duplex 2507 | Twice the strength of standard steel with exceptional resistance to pitting and crevice corrosion (PREN > 40). Ideal for subsea manifolds. |
| Austenitic Stainless Steel | 316L / 304L | Industry standard for general marine hardware, offering excellent intergranular corrosion resistance. |
| Nickel Superalloys | Inconel 625 / 718 | Superior resistance to seawater impingement and high-temperature oxidation. Used in exhaust systems and turbine blades. |
| Copper Alloys | CuNi / Al-Bronze | Naturally resistant to biofouling and seawater corrosion. Essential for cooling pipes and propellers. |
| Titanium Alloys | Ti64 (Grade 5 / Grade 23) | Exceptional strength-to-weight ratio and virtual immunity to saltwater corrosion. Used for racing yachts and AUVs. |
Applications
Deployed Across the Maritime Industry
Commercial Shipping
Propellers, rudder systems, and emergency hull patches for cargo vessels and tankers operating in harsh oceanic routes.
Offshore Oil & Gas
Subsea manifolds, valve housings, and heat exchangers for platforms and FPSOs requiring maximum corrosion resistance.
Naval & Defense
Mission-critical components for naval vessels and AUVs where titanium alloy’s strength-to-weight ratio is essential.
Why Choose Us
Traditional Casting vs. Metal 3D Printing
Why leading shipowners and offshore operators are switching to additive manufacturing.
| Feature | Traditional Casting / Forging | Metal 3D Printing (AM) |
|---|---|---|
| Lead Time | Weeks to Months (mold creation required) | ✅ Days (print directly from CAD file) |
| Tooling Costs | High (expensive molds and patterns) | ✅ Zero (no tooling required) |
| Inventory Strategy | Physical Warehousing (high holding costs) | ✅ Digital Inventory (print on demand) |
| Design Flexibility | Limited by draft angles and machining | ✅ Unlimited (topology optimization) |
| Legacy Parts | Difficult / Impossible if supplier is gone | ✅ Easy (scan and print) |
90%
Faster Lead Time
40%
Weight Reduction
5m+
Maximum Part Size
0
Tooling Required
Our Process
Solving Industry Pain Points
Decentralized Manufacturing
We print parts at the port closest to your vessel, drastically reducing logistics costs and carbon footprint. No more waiting for parts to ship from across the world.
Weight Reduction
Topology optimization removes excess material without compromising strength, improving vessel fuel efficiency and reducing operational costs over the vessel’s lifecycle.
Obsolescence Management
We extend the lifespan of older vessels by recreating parts no longer available in the market. Our reverse engineering capabilities bring legacy components back to life.
Case Studies
Trusted by Industry Leaders
Hear from maritime professionals who have transformed their supply chain with Met3DP’s additive manufacturing solutions.
“Met3DP printed a replacement bronze propeller for our aging bulk carrier in 5 days. The traditional casting quote was 14 weeks. This technology is a game-changer for fleet maintenance.”
Fleet Manager, Nordic Maritime Group
“The Inconel 625 heat exchangers Met3DP produced for our FPSO achieved a 35% weight reduction while exceeding DNV corrosion testing benchmarks. Exceptional quality and engineering.”
Chief Engineer, Pacific Offshore Solutions
“We had an obsolete valve housing that no OEM could supply. Met3DP reverse-engineered it from a worn-out sample and delivered a certified replacement within 10 days. Outstanding service.”
Procurement Director, Atlantic Ship Management
FAQ
Frequently Asked Questions
Are 3D printed marine parts certified?
Yes. We work in accordance with guidelines from major classification societies including DNV, Bureau Veritas (BV), and Lloyd’s Register to ensure our printed parts meet the necessary mechanical and chemical properties required for marine certification. Each part comes with full material certification and testing reports.
How does the corrosion resistance compare to casting?
3D printed parts, particularly those made with rapid solidification rates (like SLM), often exhibit a finer microstructure than cast parts. This can result in equal or superior corrosion resistance, provided the correct heat treatment and surface finishing are applied. We validate every build with standardized corrosion testing.
Can you replace a broken part without a 3D model?
Absolutely. We offer comprehensive reverse engineering services. We can 3D scan your broken or worn-out part, reconstruct the geometry into a precise CAD model, and print a brand-new replacement that meets or exceeds original specifications.
What is the maximum part size you can produce?
Using our Wire Arc Additive Manufacturing (WAAM) technology, we can produce parts exceeding 5 meters in length. For high-precision components using LPBF/SLM, our build volumes accommodate parts up to approximately 500mm × 500mm × 500mm.
What is the typical lead time for a marine part?
For most components, from receipt of a CAD file or physical sample to delivery of a finished, post-processed part, the typical lead time is 5–15 business days depending on size and complexity. This compares to 8–20 weeks for traditional casting processes.
Ready to Start?
Secure Your Maritime Supply Chain
Don’t let a missing part keep your vessel in dry dock. Contact our marine engineering team today for a feasibility assessment and quote.
Contact
Get in Touch
Our marine engineering specialists are ready to discuss your project requirements, provide technical guidance, and deliver a detailed quote.
Email Us
Send your project details and CAD files to our engineering team for a rapid feasibility assessment.
Call Us
Speak directly with a marine additive manufacturing specialist for urgent requirements.
Visit Us
Tour our advanced manufacturing facility and see our WAAM and LPBF systems in action.
Qingdao, China →
Request a Feasibility Assessment
Share your part specifications—including material, dimensions, and application environment—and our engineering team will provide a detailed feasibility report with pricing within 48 hours.
Typical response time: under 48 hours · NDA available upon request
