Marine, Pump and Valve Casting — From Impellers to Valve Bodies, Zero Tooling
3DPTEK delivers precision sand castings using 3D printed molds. Complex impellers with integrated cores, pump housings with internal channels, corrosion-resistant valve bodies. Prototype in 5 days, CT7 accuracy, 6 alloy families, 10 manufacturing centers. ISO 9001 certified.
Why Global Manufacturers Trust 3DPTEK for Marine, Pump & Valve Castings
From single prototypes to annual production contracts — faster delivery, zero tooling, consistent quality.
10 Produktionsstandorte
Full in-house control. 10,000+ tons aluminum capacity, 4,000+ tons iron, 3,000+ tons steel per year. No subcontracting — consistent quality, on-time delivery.
500+ Industrial 3D Printers
Our own 3DPTEK-J4000, J2500, LaserCore series printers run 24/7. Massive parallel capacity — your order never waits in a queue.
5-Day Prototypes
CAD to casting in 5 days. No patterns, no core boxes, no tooling. Design iterations at near-zero cost. Move at your development speed.
CT7 Accuracy, Every Pour
±0.3mm on parts up to 300mm. CMM, X-ray NDT, spectrometer on every batch. Full material certifications included as standard.
What We Cast for Marine, Pump & Valve Applications
Complex internal geometries, integrated cores, and optimized flow paths that traditional patterns cannot achieve.
Impellers & Propellers — CFD-Optimized, Single-Piece Cast
Closed, semi-open, axial, mixed-flow impellers up to 2,200mm. 3D printed cores reproduce exact CFD blade curvature. Single-piece casting eliminates welded joints — better dynamic balance, 15-30% efficiency gains. HT250, Ni-Al-Bronze, duplex stainless.
Pump Housings & Volute Casings
Single and multi-stage housings with integrated channels, mounting flanges, wear ring seats. Split-case, vertical turbine, submersible. Pour weights up to 1 ton.
Valve Bodies & Bonnets
Gate, globe, check, butterfly, ball valve bodies — single-piece cast with complex internal cavities. Class 2500, fire-safe, cryogenic. CF8M, 316, duplex, Monel, Hastelloy.
Marine Hardware & Deck Components
Stern tubes, rudder stocks, hawse pipes, propeller brackets, deck fittings. Ni-Al-Bronze (C95800) and duplex stainless for lifelong seawater corrosion resistance. Reverse engineering available.
Custom Engineered Castings
Desalination pump components, dredge casings, subsea manifold blocks, hydraulic components. Send your drawing — our engineers handle mold flow simulation before the first pour.
Case Studies — Real Parts, Real Savings
Actual projects delivered to marine, pump, and valve manufacturers worldwide.
Aluminum Pump Body — 80% Time Savings
Industrial Pump Brand, Asia| Prozess | 3DP Outer Mold + SLS Sand Core (4-6MPa) |
| Material | Aluminum Alloy, 200x200x120mm |
| Ergebnis | 5 days/piece, CT7, Ra12.3 surface |
Combined 3DP outer mold with SLS sand cores. Eliminated $15,000+ in pattern tooling. Customer went from 6-week lead time to same-week prototype delivery.
CF8M Multiway Valve Body — Single-Pour
European Valve Distributor| Prozess | 3DP Sand Mold + Gravity Pour |
| Material | CF8M (316 SS Equivalent) |
| Ergebnis | 15 days / 10 units, eliminated 3 welding ops |
Complex internal passageways cast as a single piece. Eliminated three welding operations, reduced NDT inspection time by 25%.
Large Closed Impeller for Chemical Pump
European Pump Manufacturer| Prozess | 3DP Sand Mold + Gravity Casting |
| Material | HT250 Gray Iron, 4 Sets |
| Ergebnis | 20 days delivery, CT7, 40% less machining |
Saved $12,000 in pattern tooling. 3D printed core blade surface reduced post-machining by 40%. Dynamic balance passed on first article.
Duplex Stainless Propeller Bracket — On-Demand
Scandinavian Shipyard| Prozess | 3DP Sand Mold + Precision Machining |
| Material | 2205 Duplex Stainless Steel |
| Ergebnis | 12 days / 2 sets, zero pattern storage |
Legacy marine component produced on-demand without physical patterns. Full traceability documentation provided.
Equipment That Delivers Speed, Precision & Scale
Every casting starts with a 3D printed sand mold on our own equipment. No outsourcing, no bottlenecks.
3DPTEK-J4000
4,000×2,500×1,800mm. 400 L/h. The largest sand printer in our fleet. One mold per large marine component.
Binder-Jetting
3DPTEK-J2500
2,500×1,500×1,200mm. 300 L/h. Workhorse for medium-large pump and valve castings.
Binder-Jetting
LaserCore-5300
800×800×550mm. SLS sand. ±0.1mm accuracy for precision sand cores and fine-detail molds.
SLS-Sand
Traditional Casting vs. 3DPTEK 3D Printed Sand Mold Casting
Why pump and valve manufacturers are switching.
Traditioneller, auf Modellen basierender Guss
- Musterwerkzeuge: $5.000–$50.000 pro Satz
- Lead time: 4-8 weeks for tooling
- MOQ required to amortize tooling cost
- Design change = new tooling
- Separate Kernkästen für interne Merkmale
- Draft angles constrain design freedom
- Multi-piece assembly for complex geometries
- Pattern storage and maintenance costs
- Pattern wear degrades accuracy
3DPTEK 3D Printed Sand Mold Casting
- Zero tooling — print directly from CAD
- 3–5 Tage bis zum ersten Guss
- Single piece to serial — no minimums
- Entwürfe nahezu kostenlos iterieren
- Komplexe Kerne, die als ein Stück gedruckt werden
- Keine Einschränkungen hinsichtlich des Anstellwinkels
- Single-piece casting reduces welding
- No pattern storage — print on demand
- Every mold identical — zero drift
6 Alloy Families, 30+ Grades
Vollständige Rückverfolgbarkeit der Materialien bei jedem Auftrag.
Gusseisen
HT200, HT250, HT300, QT. Über 4.000 Tonnen/Jahr.
Aluminium
A356, A357, AlSi10Mg, 1-7xxx. 10,000+ tons/year.
Edelstahl
304, 316, CF8M, 17-4PH, 2205, 2507. 3,000+ tons/year.
Ni-Al-Bronze
C95800, C95500, H62, C90300. 1,000+ tons/year.
Specialty
Monel, Hastelloy, Inconel. High-temp, cryogenic.
Custom
Need a specific grade? Our metallurgists source or formulate.
Certifications & Quality Systems You Can Rely On
Every casting ships with full documentation. In-house inspection lab, complete traceability.
ISO 9001:2015
Certified quality management — order intake to final inspection.
ISO 45001:2018
Occupational health & safety. Safe, compliant across all 10 locations.
ISO 14001:2015
Umweltmanagement. Nachhaltiger Gießereibetrieb.
EN 10204 3.1
Full material cert — chemistry, mechanicals, NDT. Traceable to heat.
CMM (PEE=5.18um)
Zeiss-class coordinate measurement. Every dimension verified.
X-Ray & Spectrometer
Industrial X-ray NDT, spectrometer at 10pm/pixel. In-house.
From Your CAD to Your Casting — 4 Steps
A streamlined digital workflow that eliminates tooling entirely.
Submit Your CAD
Upload STEP/IGES or STL. Engineering review within 24 hours.
Print Sand Mold
3D print mold and cores directly from your CAD. No tooling, overnight.
Gießen & Formen
Pour your alloy in our self-owned foundries. Full process control from melt to shakeout.
Prüfen & Versenden
CMM verification, NDT, full documentation. Castings arrive ready for machining.
Entdecken Sie weitere Anwendungsbereiche des Gussverfahrens
Questions Our Marine & Pump Customers Ask
Most prototypes ship in 5-7 days from CAD approval — including simulation, printing, pouring, and inspection. Complex parts with extensive machining may add 2-3 days. Batch production (10-100 units) typically delivers in 10-20 days.
Ni-Al-Bronze (C95800 — standard for propellers/impellers), 316/CF8M stainless, 2205/2507 duplex and super duplex, Monel, Hastelloy. Also aluminum (A356, A357) and gray iron (HT250, HT300) with protective coatings. Full chemistry and mechanical reports included.
All three levels: raw (as-cast, cleaned), semi-finished (critical surfaces machined), and fully finished ready for assembly. In-house: 5-axis gantry (3x4m), V8 vertical centers, CNC turning (up to 450mm), wire-cutting EDM. Surface treatments: sandblasting, painting, anti-corrosion coatings.
Yes — a core use case. Send the original part or 3D scan. We recreate the CAD model, optimize gating, and produce castings matching or exceeding the original spec. Typical turnaround: 2-3 weeks from receiving the sample. Ideal for obsolete pump/valve components where OEM tooling no longer exists.
EN 10204 3.1 material certificate (chemistry + mechanical properties), dimensional inspection report (CMM data), visual inspection report. For pressure-containing parts: X-ray or dye penetrant NDT. Full traceability: raw material heat number, mold batch, pour date, heat treatment cycle, inspector sign-off.
One piece. Zero tooling means zero setup cost to amortize. Order a single prototype, verify, then scale. Per-unit cost decreases with volume due to pouring efficiency, but we never require a minimum order.