High-Precision CNC Machining for Heavy Components Up to 12 Meters and 25 Tonnes
Advanced CNC machining for large-scale industrial components from 10 kg prototypes to 25-tonne assemblies. We combine welding and precision machining under one roof: cutting → welding → machining → verification → delivery.
Complete Manufacturing from Raw Material to Precision-Machined Components
At Steiger, we specialize in high-precision CNC machining of large-scale welded components that demand both structural integrity and dimensional accuracy. Our integrated approach combines certified welding with advanced CNC machining, eliminating coordination delays and quality risks.
Whether you need machine beds, heavy machinery components, aerospace structures, or custom-engineered assemblies, we deliver complete solutions from raw material to final inspection, measured and verified with laser tracker technology.
Certified Precision for Critical Industrial Applications
Our machining operations are certified to European and international standards, ensuring systematic quality management and documented procedures for every project. This means we can handle aerospace components, railway parts, and heavy industrial equipment with full traceability and accountability.
Certifications: EN 1090-2 EXC4 (Execution Class 4), EN 15085-2 (Railway Applications — Welding), ISO 3834-2 (Comprehensive Welding Quality), ISO 9001:2015 (Quality Management), ISO 14001:2015 (Environmental Management), ISO 45001:2023 (Occupational Health & Safety)
Personnel & Qualifications: 10 TÜV-certified welders, 2 International/European Welding Engineers (IWE/EWE), 2 International Welding Practitioners (IWP), 1 International Welding Technologist (IWT), 20+ documented welding procedure qualification records (WPQRs), Material certifications with full traceability to mill test certificates (MTCs)
Advanced Machinery for Large-Scale Precision Manufacturing
5-axis CNC Gantry Milling
- Dimensions: 12,000 x 4,000 x 1,500 mm travel
- Applications: Large welded frames, machine beds, aerospace structures
- Key capabilities: Complex 5-axis operations, simultaneous multi-axis machining
- Advantages: Handles components up to 12 metres in length
3+2-axis CNC Horizontal Milling
- Dimensions: 12,000 x 1,250 x 3,500 mm travel
- Applications: Long structural components, railway parts
- Key capabilities: Extended reach for large assemblies
- Advantages: Precision machining on heavy welded structures
3-axis and 5-axis CNC Vertical Milling Centers
- Dimensions: Up to 3,000 x 1,000 x 1,500 mm
- Applications: Medium-sized components, fixtures, tooling
- Key capabilities: High-speed machining, tight tolerances
- Advantages: Flexible production for various component sizes
Turning Capabilities
- Traditional lathes: Ø350 x 1,500 mm
- Face lathe: Ø1,500 x 200 mm
- Applications: Cylindrical components, shaft machining
- Key capabilities: Precision turning operations
Additional Machining Operations
- Drilling, boring, tapping, sawing, chamfering
- Grinding for surface finish correction
- Maximum component weight: Up to 25 tonnes
- Total machining centres: 10+ CNC machines plus conventional equipment
Material capabilities:
- Carbon steel (S235 to S690)
- Stainless steel (304, 316, duplex)
- Low-alloy steels
- Aluminum (5000 and 6000 series)
- Thickness range: 1 mm to 100 mm+
Capacity:
- Component size: Up to 12 metres in length
- Component weight: Up to 25 tonnes
- Production area: Over 7,000 m² with 9 bridge cranes (35-tonne capacity)
- Machining envelope: Up to 12,000 x 4,000 x 1,500 mm
Measurable Accuracy — Verified with Advanced Metrology
Dimensional Verification
- Leica Absolute Tracker AT403: Laser tracker with a measurement range from 0.8 m to 320 m in diameter
- Hexagon Romer Portable Measuring Arm: 2.5 m working diameter with integrated laser scanner and tactile probing
- Achievable accuracy: 0.05 mm positional accuracy over 10 metres on welded and machined structures
Non-Destructive Testing (NDT)
- Visual Examination (VT) — Level II In-House
- Liquid Penetrant Testing (PT) — Level II In-House
- Ultrasonic Testing (UT) — External Partners
- Radiographic Testing (X-ray) — External Partners
Material Traceability
- Mill certificates (EN 10204 3.1 or 3.2)
- Material verification and documentation
- Certified material suppliers
What this means:
We don’t just machine components—we deliver verified, measured assemblies ready for installation. Every machined component is inspected and dimensionally verified before it leaves our facility. Our laser tracker technology ensures precision down to 0.05 mm over 10 metres, critical for aerospace, railway, and heavy machinery applications.
From Aerospace Structures to Heavy Machinery Components
Aerospace Industry
Satellite transport units
Aircraft assembly structures
Precision fixtures and tooling
Clients: Airbus, Lockheed Martin
Example: Aerospace structures requiring micron-level precision
Railway Industry
Machine beds for rail bending machines (13 tonnes)
Railway parts for mounting devices (60+ tonnes)
Track components for pilot training machines (32 tonnes, 81,000 x 450 x 50 mm)
Certification: EN 15085-2 for railway welding
Example: Base plates for pilot simulator manufactured for Van Halteren Technologies, Netherlands
Heavy Machinery Manufacturing
Machine beds and frames
Welded-machined components for industrial equipment
Custom machinery assemblies
Example: Wave Generator for Bosch Rexroth (51 tonnes, 8 main structural parts with hundreds of subassemblies, precision 0.05 mm, two-year collaboration)
Industrial Equipment
Tyre industry machined parts (10+ tonnes)
Bagging machine components
Processing equipment frames
Industrial filtration equipment
Custom Engineering
Prototypes and one-off pieces
Small series production
Precision tools and fixtures
Assembly jigs
How We Execute
CNC Machining Projects
Step 1: Technical Review and Quotation
Upload your drawings (PDF, DWG, STEP) or specifications
Our engineers review for machinability and manufacturability
We identify potential challenges and optimization opportunities
Detailed quote within 3–5 business days
Step 2: Design for Manufacturing (DFM)
Machining sequence planning
Fixture and tooling design (if required)
Material specification and procurement
Quality control plan development
Step 3: Material Procurement
Certified material suppliers
Mill certificates and traceability
Material verification and documentation
Step 4: Fabrication and Welding (If Required)
Cutting, forming, and preparation
Certified welders assigned
In-process inspection (VT, PT)
Dimensional verification at key stages
Step 5: CNC Machining
Transfer to appropriate CNC machining center
Precision machining to specification
Tight tolerance capability (0.05 mm positional accuracy achievable over 10 metres)
Multi-axis operations for complex geometries
Step 6: Verification & Testing
Dimensional verification (laser tracker and portable measuring arm)
NDT (UT, X-ray if specified)
Surface finish verification
Documentation package with measurement reports
Step 7: Surface Treatment (If Required)
Grit blasting to specified standard (ISO 8501-1)
Industrial airless spray painting (heated paint shop, 540 m²)
Coating thickness verification
Step 8: Delivery & Installation Support
Secure packaging for transport
On-site installation available
Technical support during assembly
Training and documentation
What Makes Our CNC Machining Different
Integration Eliminates Risk
When welding and machining happen under one roof, there is no finger-pointing. We take full responsibility for quality and dimensional accuracy from raw material to final verification. If modifications are needed during machining, we handle them—no coordination delays, no change orders between suppliers.
Scale and Precision Combined
Most machine shops can handle either large components or tight tolerances—not both. Our 12-meter CNC gantry combined with laser tracker verification allows us to achieve 0.05 mm positional accuracy on components weighing up to 25 tonnes. This capability is rare and critical for aerospace, railway, and heavy machinery applications.
Engineering Support from Concept to Commissioning
Our two International Welding Engineers and experienced manufacturing engineers don’t just execute drawings—they help optimize designs for machinability, cost, and performance. We provide design feedback, material recommendations, and process improvements.
Family-Owned Reliability
Since 1994, every component carries our name. We’re not a job shop focused on volume—we’re a manufacturing partner that treats your project as if it were our own. Direct communication with decision-makers, flexible problem-solving, and long-term relationship focus.
“Professional, Experienced, Trustworthy”
– MALCHEM ROMANIA
Frequently Asked Questions
Up to 12 metres in length and 25 tonnes in weight. Our 5-axis CNC gantry has a working envelope of 12,000 x 4,000 x 1,500 mm, and our facility has 9 bridge cranes with a 35-tonne capacity.
Yes. We achieve tolerances as tight as 0.05 mm over 10 metres on welded and machined structures, verified with Leica laser tracker. This precision is critical for aerospace, railway, and heavy machinery applications.
Yes—this is one of our core strengths. We control both processes in-house, eliminating coordination risks. Typical workflow: cutting → welding → stress relief (if needed) → machining → verification.
Aerospace, railway, heavy machinery manufacturing, industrial equipment, energy, and custom engineering. We hold EN 15085-2 certification for railway applications and serve clients like Airbus, Bosch Rexroth, and Michelin.
Yes, we provide full material traceability with mill test certificates (MTCs) to EN 10204 3.1 or 3.2, as required.
Both. Our engineering team can work from STEP, IGES, or other 3D formats, as well as traditional 2D drawings (PDF, DWG). We provide design for manufacturing feedback in both cases.
Lead times vary depending on project complexity, material availability, and current production schedules. Please contact us to discuss your specific project timeline and requirements.
Yes. We manufacture prototypes, one-off parts, and small production series. Our flexible manufacturing approach allows us to handle both development projects and production runs.
We provide comprehensive dimensional verification using a Leica laser tracker and a Hexagon Romer portable measuring arm, NDT (VT, PT in-house; UT, X-ray via partners), and full documentation packages with measurement reports.
Ready to Discuss Your CNC Machining Project?
Whether you need aerospace structures, railway components, or heavy machinery parts, our engineers are ready to review your requirements. Upload your drawings or specifications for a detailed technical quote.