⚓ Met3DP — Marine Additive Manufacturing
Metal 3D Printing Solutions for Marine & Offshore Engineering
Revolutionizing maritime supply chains with on-demand additive manufacturing. Certified, corrosion-resistant components — from propellers to heat exchangers — delivered in days, not months.
The Challenge
Critical Challenges in Maritime Engineering
In the deep sea and offshore sectors, equipment failure is a critical operational risk. Traditional supply chains struggle to meet the demands of remote fleets, aging vessels, and extreme saltwater environments.
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Extreme Corrosion
Components must withstand constant exposure to saltwater, humidity, and high pressure — demanding specialized alloys and advanced manufacturing processes.
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Logistical Nightmares
Sourcing spare parts for vessels in international waters can take months, leading to costly demurrage and extended dry dock periods.
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Large & Obsolete Parts
Many marine components are massive, and casting molds for older vessels often no longer exist — making traditional replacement nearly impossible.
Our Additive Manufacturing solutions bridge the gap between port and vessel — transitioning you from physical warehousing to a Digital Inventory.
Capabilities
Key Applications: What We Print
We categorize our marine production capabilities into two distinct streams to address specific vessel needs.
1. Large-Scale Structural Components
Propellers & Blades
Utilizing Wire Arc Additive Manufacturing (WAAM) to print large bronze or stainless steel propellers without the need for molds.
Rudder Systems & Stocks
Custom-manufactured heavy-duty steering components built to exact specifications for any vessel class.
Deck Equipment
High-strength crane hooks, winches, and structural brackets tailored to specific load requirements.
Hull Repair Patches
Rapid manufacturing of certified steel plates for emergency hull reinforcement — available in days, not weeks.
2. Complex Functional Parts
Heat Exchangers
Optimized internal lattice structures that increase cooling efficiency while reducing weight by up to 40%.
Valves & Pump Housings
Monolithic printing of complex fluid dynamics components to eliminate leakage points found in multi-part assemblies.
Impellers
High-precision rotating parts with complex geometries that are impossible to produce via traditional casting methods.
Obsolete Spare Parts
Reverse engineering of legacy components for engines and auxiliary systems where original OEMs no longer exist.
Materials
Marine-Grade Materials
We utilize metal powders and wires that meet 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 | The 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 (Copper-Nickel) / Al-Bronze | Naturally resistant to biofouling (barnacle growth) and seawater corrosion. Essential for seawater cooling pipes and propellers. |
| Titanium Alloys | Ti64 (Grade 5 / Grade 23) | Exceptional strength-to-weight ratio and virtual immunity to saltwater corrosion. Used for high-performance racing yachts and AUVs. |
Technologies
Our Manufacturing Technologies
We deploy the right technology for the right part size and complexity.
Large-Scale Production
Wire Arc Additive Manufacturing (WAAM)
Best For: Massive parts (1 meter to >5 meters).
Process: Uses an electric arc to melt metal wire, layer by layer.
Advantage: High deposition rate, low material cost, and ability to produce near-net-shape large structures like propellers and structural beams.
Precision Engineering
Laser Powder Bed Fusion (LPBF / SLM)
Best For: Small to medium, highly complex parts.
Process: A high-power laser selectively melts metal powder.
Advantage: Extreme precision (+/- 0.05mm), capable of creating internal cooling channels and lightweight lattice structures.
Why Switch
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 access | Unlimited (Topology optimization allowed) |
| Legacy Parts | Difficult / Impossible if supplier is gone | Easy (3D Scan and print) |
Our Edge
Solving Industry Pain Points
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Decentralized Manufacturing
We can print parts at the port closest to your vessel, drastically reducing logistics costs and carbon footprint. No more waiting for overseas shipments.
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Weight Reduction
Topology optimization allows us to remove excess material without compromising strength — improving vessel fuel efficiency and operational range.
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Obsolescence Management
We extend the lifespan of older vessels by recreating parts that are no longer available in the market — via 3D scanning and reverse engineering.
40%
Weight Reduction via Topology Optimization
5m+
Max Part Size with WAAM Technology
±0.05mm
LPBF Precision Tolerance
Success Stories
What Our Clients Say
“Met3DP printed a replacement propeller for our aging bulk carrier in just 12 days. Traditional casting would have taken 4 months. The vessel was back in service ahead of schedule, saving us over $200K in demurrage costs.”
Captain Erik Lindström — Fleet Manager, Nordic Shipping Group
“The heat exchangers Met3DP produced have a 38% weight reduction compared to our original cast units, with measurably improved thermal performance. We are now transitioning our entire spare parts inventory to digital.”
Dr. Sarah Chen — Chief Engineer, Pacific Marine Solutions
“We had obsolete valve housings on a 30-year-old offshore platform with no OEM support. Met3DP reverse-engineered and printed certified replacements in Inconel 625. Absolutely game-changing for asset life extension.”
James O’Brien — Maintenance Director, Atlantic Offshore Energy
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, and Lloyd’s Register — to ensure our printed parts meet the necessary mechanical and chemical properties for marine certification. Every component undergoes rigorous testing including tensile, impact, and corrosion resistance analysis.
How does the corrosion resistance compare to casting?
3D printed parts, particularly those made with rapid solidification rates (like SLM/LPBF), 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. Our Duplex and Super Duplex stainless steel prints consistently achieve PREN values above 40.
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, optimize it if needed, and print a brand-new replacement — all without requiring any original drawings or OEM involvement.
Ready to 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.
Get in Touch
Contact Our Marine Engineering Team
Whether you need an emergency replacement part or want to discuss transitioning to a digital inventory strategy, our experts are ready to help.
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Call Us
+86 186-0000-3333
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Visit Us
Met3DP Technology Co., Ltd.
Qingdao, Shandong, China
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Business Hours
Mon – Fri: 09:00 – 18:00 (CST)
Emergency line available 24/7
© 2026 Met3DP Technology Co., Ltd. All rights reserved. | Certified partner of DNV, Bureau Veritas & Lloyd’s Register for Additive Manufacturing
