METAL MANUFACTURING
100+
Industrial metal printing systems for production-grade applications.
CUSTOM METAL 3D PRINTING SERVICE ONLINE
Industrial Metal 3D Printing.Rapid Prototyping to Parts Production.
As China's largest metal 3D printing manufacturer, Unionfab delivers industrial-grade precision, rapid turnaround, and scalable production from engineering prototypes to end-use parts.
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No MOQ • ISO 27001 Certified • Free DFM Review • 10% Off First Order
Cooperative Partners:
Excellent4.7 out of 5
MATERIAL OPTIONS
30+
Qualified metal materials with process-specific compatibility.
LEAD TIME
5-7 DAYS
Standard turnaround for most metal 3D printed parts.
CERTIFIED
ISO
ISO 9001, 14001, 13485 & IATF 16949 certified with NDA-secured manufacturing workflows.
Applications of Metal 3D Printing
Unionfab supports engineers and manufacturers with high-performance metal additive manufacturing solutions, helping reduce tooling costs and shorten development cycles.
- Complex Geometries:
Topology-optimized aerospace structures, high-performance automotive housings, bio-compatible medical implants, bespoke robotics fixtures, and digital-to-physical on-demand replacement parts.
- Low-Volume Production:
Custom automotive exhaust manifolds, aerospace lightweight brackets, robotic end-effectors, medical implants, and conformal cooling mold inserts; cost-effective production from prototypes to hundreds of parts.
- Rapid Tooling:
Injection mold inserts, die-casting cooling modules, stamping tools, and master molds for silicone casting.
Automotive
PartCar Exhaust Manifold
TechnologySLM
Material316L Stainless Steel
Automotive
Medical
PartOrthopedic Bone Scratch Plate
TechnologySLM
MaterialTitanium
Medical
Aerospace
PartHeat Dissipation Module
TechnologySLM
MaterialAluminum (AlSi10Mg)
Aerospace
Industrial
PartEngine Cover
TechnologySLM
MaterialAluminum (AlSi10Mg)
Industrial
Why Choose Unionfab for Metal 3D Printing?
100+ Industrial Metal Printers & Smart Manufacturing
Equipped with advanced 4-laser and 6-laser SLM systems from BLT, Farsoon, and EOS for faster, cost-efficient production.
AI-Driven High-Speed Metal Printing
Proprietary AI compensation technology enables stable large-layer printing with high density and consistent quality.
30+ Engineering-Grade Metal Materials
Aluminum, titanium, stainless steel, tool steel, copper alloys, and proprietary aerospace-grade aluminum materials.
Advanced Manufacturing for Complex Parts
Easily produce lightweight structures, internal channels, lattice designs, and complex geometries beyond traditional manufacturing limits.
Scalable Production Capacity
From rapid prototyping to mass production, supporting volumes from 1 to 1,000,000+ parts.
Production-Ready Finishing Services
CNC machining, polishing, heat treatment, anodizing, and other surface finishing options available.
Why should you work with Unionfab?
Unionfab—China's Largest Metal 3D Printing Service Provider
Unionfab is a leading force in industrial metal additive manufacturing, combining large-scale production capacity with AI-driven smart manufacturing to deliver fast, precise, and production-ready metal parts for global industries.
With 100+ industrial metal 3D printers, including high-end BLT systems and other leading international platforms, Unionfab builds a powerful manufacturing network capable of stable, high-quality output at scale.
As an AI-propelled smart manufacturing hub, the production system is optimized for intelligent scheduling, process control, and 24/7 continuous operation—reducing lead times by 40–60% compared with typical local suppliers.
From rapid prototyping to small-batch production of 1,000+ parts, Unionfab supports end-to-end manufacturing needs with speed, consistency, and industrial-grade reliability.
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Industrial Metal Printers
0M+
Parts Annually
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Countries Covered
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Orders Daily
Metal 3D Printing Equipment (BLT)
Metal 3D Printing Equipment (Farsoon)
Metal 3D Printing Equipment (UnionTech)
Metal 3D Printing Equipment (EOS)
Industrial Metal 3D Printing Technology
Custom Metal Printing Service: DMLS/SLM, Binder Jetting, 3D Printing Molds for Metal Casting
Selective laser melting(SLM) Direct Metal Laser Sintering (DMLS)
Best for: Functional prototypes, lightweight structures, and high-performance end-use parts
Typical Lead Time: 5-7 business days
Key Advantage: High density and strong mechanical performance
Binder Jetting (BJ)
Best for: Cost-efficient production of complex metal parts at higher volumes
Typical Lead Time: 7-15 business days
Key Advantage: Better scalability for batch production
3D Printing Molds for Metal Casting
Best for: High‑precision complex metal castings for energy, aviation, marine, automotive and industrial equipment
Typical Lead Time: 5–10 business days
Key Advantage: Complex geometries, high accuracy & cost-effective
How to choose the most suitable Metal Processing Method
Selection of Metal 3D Printing Materials
Metal 3D Printing Materials
Stainless Steel
A versatile and cost-effective metal material offering excellent strength, corrosion resistance, and reliable mechanical performance across a wide range of industrial applications.
Best for: Functional parts, tooling, and general industrial components
Materials:
- 316L Stainless Steel
- 17-4PH Stainless Steel
- Maraging Steel
- BJ Stainless Steel 17-4PH
- BJ Stainless Steel 316L
Metal 3D Printing Tolerances & Accuracy Guide
| Feature | Description |
|---|---|
| Maximum Part Size | 800 mm x 800 mm x 700 mm |
| General Tolerances | L<100mm: ±0.2mm, L>100mm: ±0.2%*L |
| Minimum Wall Thickness | 0.5 mm |
| Layer Thickness | 0.035 mm |
| Standard Lead Time | 3–7 business days |
* Tolerances may vary depending on part geometry, material, and build orientation.
Larger parts may experience slightly greater deviation due to thermal stress and shrinkage.
Metal 3D Printing Surface Finishing
Enhance the appearance, performance, and functionality of your parts with our professional 3D printing surface finishing options. From aesthetic improvements to functional coatings, we provide solutions tailored to your application needs.
Surface Finishing
- Polishing / Mirror Finishing:From standard smoothing to high-gloss mirror surfaces for premium applications.
- Anodizing:Enhances corrosion resistance and allows color customization while maintaining lightweight performance.
Not sure which material or finishing option is right for your project?
Our engineers will recommend the best solution.
Metal 3D Printing vs CNC Machining
Design Freedom vs Machining Limits
Metal 3D printing enables complex geometries and internal structures, while CNC machining is better suited for simpler and accessible designs.
Lightweight vs Precision Finishing
Metal 3D printing supports lightweight lattice optimization, while CNC machining provides superior surface finish and dimensional accuracy.
Tool-Free Production vs Traditional Manufacturing
Metal 3D printing requires no tooling for rapid prototyping, while CNC machining relies on traditional subtractive manufacturing processes.
Low-Volume Flexibility vs Mass Production Efficiency
Metal 3D printing is ideal for customized and low-volume parts, while CNC machining is more cost-effective for large-scale production.
Complex Manufacturing vs High Consistency
Metal 3D printing offers greater design flexibility, while CNC machining ensures stable repeatability and precision for industrial-grade parts.
How Does Metal 3D Printing Work?
Metal 3D printing, also known as metal additive manufacturing, builds parts layer by layer directly from a digital 3D model. A laser or electron beam selectively melts metal powder or wire, fusing it into fully dense structures with high precision. This process enables the creation of complex geometries, internal channels, and lightweight designs that are difficult or impossible to achieve with traditional manufacturing methods. After printing, parts typically undergo post-processing such as heat treatment, machining, or surface finishing to meet final performance requirements.
Quality Control Throughout the Metal 3D Printing Process
Certified under ISO 9001 · ISO 14001 · ISO 13485 · IATF 16949, ensuring industrial-grade quality, traceability, and compliance. Every metal part undergoes strict inspection and process validation to ensure dimensional accuracy, internal integrity, and production consistency for demanding applications.
Confidentiality Assurance:We prioritize the security of your designs and intellectual property. Non-Disclosure Agreements (NDAs) can be signed upon request, and all files are handled with strict confidentiality throughout the entire production process.
Expertise & Inspection Capabilities:Equipped with advanced inspection tools such as CMMs, 3D scanners, digital calipers, and material testing systems, we ensure precise dimensional accuracy and reliable performance for every printed part—from prototypes to production runs.
Process Control:Quality is embedded in every stage of our additive manufacturing workflow—from file analysis and build preparation to printing, post-processing, and final inspection. Standardized procedures and real-time monitoring help minimize deviations and ensure consistent, repeatable results.
Traceability & Reliability:Every order is fully traceable, with documented records covering material batches, printing parameters, and inspection results. This transparent workflow ensures consistent quality and gives customers full confidence in every delivered part.
For more details on our quality standards, check out our Inspection Checklist (including both standard and premium options).
FAQs about Metal 3D Printing
The formula below encompasses all cost components involved in an industrial 3D printing quote:
Total Cost = Printing Cost (Material Unit Price × Part Weight) + Complexity Surcharge + Post-Processing + Packaging + Shipping + Customs Duty
For detailed explanation of the cost items above, you can refer to our 3d printing cost guide.
For single parts or low-volume complex components, it is often more cost-effective by eliminating tooling costs and reducing lead time.
It is ideal for complex geometries, lightweight designs, low-volume production, and rapid development—especially for parts difficult to manufacture traditionally.
Yes. Common post-processing includes heat treatment, sandblasting, polishing, or CNC machining to improve strength, appearance, and accuracy.
With optimized processes and heat treatment, parts can reach near-wrought or cast-level mechanical properties for functional and end-use applications.
Unionfab can swiftly print your DMLS/SLM parts in as little as 4-5 days and binder jet parts within 7-15 days. We offer worldwide shipping through trusted carriers like DHL Express and FedEx. The global logistics duration typically ranges from 3-9 days, with Europe and the United States experiencing a shorter duration of about 3-5 days.
Quality is ensured through industrial-grade machines, strict process control, and certified quality systems (ISO 9001 / 13485 / IATF 16949, etc.). Every order undergoes meticulous inspection before shipping. In the rare event of damage, dimensional discrepancies, or shortages, please contact your dedicated account manager promptly, and we will initiate our rapid resolution protocol.
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Unionfab is China's Largest 3D Printing Manufacturing Company for Rapid Prototyping and On-Demand Production Parts.
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