China Precision Investment Casting & In-House CNC Machining
VastCasting delivers single-source OEM casting and CNC machining solutions. From investment-cast blanks to tight-tolerance CNC finished components, we serve valve OEMs, energy hot-section systems, and automotive markets under one roof.
Specialized Material Capabilities:
Browse Our Precision Casting & CNC Product Lines
Explore stainless steel castings, superalloy high-temp components, and aluminum CNC machined parts engineered for OEM production.
Bronze Investment Casting Part Custom Components
Custom bronze investment casting part with corrosion resistance, tight tolerances, and surface finishing for marine, valve, and industrial components.
Cobalt Based Investment Castings Customized
Cobalt based investment castings customized for aerospace, medical, and energy parts with lost wax casting, secondary machining, and quality assurance.
304 Stainless Steel Investment Casting Custom Parts
304 stainless steel investment casting for CF-8 precision parts with corrosion resistance, tight tolerances, and custom finishing.
Automotive After Market Investment Castings
Automotive after market investment castings for replacement and performance parts—precision lost wax casting, alloy options, CNC machining, and fast turnaround with design support.
A356 Aluminum Investment Casting for Aerospace and Industrial OEM Parts
A356 (AlSi7Mg) investment castings with lost wax tooling, T6 heat treatment, and precision CNC finishing for aerospace, defense, and industrial OEM programs.
Stainless Steel Investment Castings 304 316 316L and Duplex Steel
VastCasting manufactures high-precision stainless steel castings engineered specifically for demanding chemical processing, sanitary food handling, and high-pressure fluid control applications. By integrating lost wax precision casting with tight-tolerance in-house CNC machining, we deliver turnkey, ready-to-assemble OEM parts featuring leak-free sealing faces, NPT/BSP precision threads, and exact mounting datums directly from our single-source facility.
Precision Lost Wax Castings with In-House CNC Finishing
Our single-source lost wax stainless steel investment casting process produces complex, near-net shape blanks across a wide range of austenitic and duplex alloy grades. By unifying molten metal pouring operations and post-cast precision CNC milling and turning under one roof, VastCasting eliminates multi-vendor coordination bottlenecks, lowers landed procurement costs, and ensures zero-defect quality for critical pressure-containing parts.
- Superior Corrosion & Pitting Resistance: Custom metallurgical control guarantees optimal alloy chemistry for severe marine, acidic chemical, and industrial processing environments.
- Precision Machined Sealing Datums: Multi-axis CNC milling, turning, and thread cutting achieve mirror-finish valve seats, flange faces, and tight O-ring groove tolerances.
- Rigorous Quality Inspection: Every heat batch undergoes spectrographic melt analysis, hydrostatic pressure testing, non-destructive testing (NDT), and CMM dimensional auditing.
Sub-Product Categories
Explore our core stainless steel lost wax casting and CNC machining capabilities designed for global fluid management, chemical processing, and OEM heavy equipment.
Valve Bodies and Valve Fittings
Engineered stainless steel valve body components including ball, globe, butterfly, and check valve housings. Features precision CNC-machined seating faces and NPT/BSP threads for leak-tight fluid containment under high pressure.
Pump Housings and Impellers
High-performance dynamic and static pump parts poured in CF8M casting grades and duplex alloys. Castings provide ultra-smooth hydraulic internal passages to minimize fluid turbulence and resist cavitation.
Hydraulic Valve Bodies & Housings
Heavy-duty hydraulic manifold blocks and duplex steel valve body casting units built to endure continuous cyclic pressures, aggressive thermal shock, and corrosive hydraulic fluids.
Pipe Fittings Flanges & Y Strainers
Cast stainless steel pipe connectors, heavy-duty mounting flanges, and Y-strainer bodies precision-machined for petrochemical equipment parts, sanitary food processing systems, and steam distribution grids.
Featured Stainless Steel and Duplex Alloy Grades
VastCasting pours a comprehensive selection of standard austenitic, martensitic, and duplex stainless steel materials tailored to meet rigorous pressure, thermal, and corrosion specifications.
| Cast Grade Designation | Equivalent Standard | Key Material Characteristics | Primary Target Applications |
|---|---|---|---|
| ASTM A351 CF8 | AISI 304 Stainless Steel | Versatile 18/8 austenitic alloy offering excellent general corrosion resistance, high ductility, and good weldability. | Food processing machinery, sanitary valves, architectural hardware, general fluid handling. |
| ASTM A351 CF8M | AISI 316 Stainless Steel | Molybdenum-bearing CF8M casting alloy delivering superior protection against pitting, chlorides, and aggressive organic acids. | Chemical stainless steel valve body components, marine hardware, pharmaceutical process pumps. |
| ASTM A351 CF3M | AISI 316L Stainless Steel | Extra-low carbon variant designed to eliminate carbide precipitation and prevent intergranular corrosion during field welding. | Welded fluid fittings, sanitary food processing systems, chemical transport manifold blocks. |
| Duplex Steel 2205 (UNS S31803) | ASTM A890 Grade 4A / CD3MN | Dual-phase austenitic-ferritic structure providing double the yield strength of 316 alongside exceptional resistance to stress corrosion cracking. | Offshore oil and gas equipment, desalination pump impellers, duplex steel valve body casting assemblies. |
| Super Duplex 2507 (UNS S32750) | ASTM A890 Grade 5A / CE3MN | High PREN (>42) super duplex alloy delivering extreme resistance to pitting, crevice erosion, and severe halide chemical environments. | Subsea fluid manifolds, high-pressure chemical pumps, reverse osmosis desalination systems. |
Single-Source Accountability for Castings and Machining
Dividing raw casting procurement and secondary CNC machining between separate suppliers leads to frequent quality disputes over machining stock, porosity defects, and datum misalignments. VastCasting eliminates these operational risks by completing raw investment casting pouring and precision CNC machining in a single China facility. Our tooling engineers optimize raw blank geometry specifically around CNC fixture locations, ensuring faster turnaround times, lower overall landed costs, and 100% compliant parts.
Superalloy High-Temperature Investment Castings (Nickel & Cobalt Alloys)
Precision-Engineered Components for Aerospace, Power Generation, and Industrial Gas Turbines
VastCasting manufactures vacuum-melted nickel-base and cobalt-base superalloy investment castings engineered specifically for extreme thermal stress, oxidation, and mechanical loads. Our high-precision high temperature alloy casting capabilities serve aerospace OEMs, industrial gas turbine (IGT) operators, and energy equipment manufacturers that demand uncompromising metallurgical integrity and micron-level dimensional precision.
Every investment cast superalloy component is produced using Vacuum Induction Melting (VIM) under strict atmospheric control to eliminate dissolved gases, prevent inclusions, and tightly manage complex chemical compositions. Following casting, every batch undergoes a rigorous non-destructive testing (NDT) protocol to ensure total structural reliability in hot gas path environments where failure is not an option.
Whether your application calls for equiaxed or directionally solidified microstructures, our engineering team collaborates directly from your 2D and 3D CAD models to optimize gating, ceramic shell strength, and cooling rates for complex airfoils, thin-wall structures, and intricate internal channels.
Precision investment cast turbine blades and guide vanes — nickel-base superalloy, VIM process
Core Components and Product Lines
- Gas Turbine and Aviation Rotor Blades
High-cycle fatigue-resistant turbine blade castings featuring precise aerodynamic profiles and tight wall-thickness tolerances for aviation engines and heavy industrial turbines.
- Turbine Guide Vanes and Gas Turbine Nozzles
Stationary nozzle guide vanes and stator segments cast with advanced oxidation-resistant alloys for sustained high-temperature gas flow management.
- Hot Gas Path Structural Segments
Combustor liners, heat shields, transition pieces, and shroud rings cast in high-performance cobalt and nickel alloys for thermal shock endurance.
Process Controls and NDT Verification
Controlled vacuum melting prevents oxidation and removes volatile impurities, verified by optical emission spectrometry prior to pouring.
100% surface FPI coverage detects micro-cracks and surface discontinuities on complex airfoil profiles in compliance with ASTM E1417.
Digital and film X-ray radiography confirms internal soundness, detecting subsurface shrinkage, porosity, or inclusions in thick or cored sections.
3D Coordinate Measuring Machine scanning verifies blade chord, twist angles, wall thickness, and mounting datums against CAD models.
Common Superalloy Grades and Typical Applications
| Alloy Family | Representative Grades | Max Operating Temp | Typical Applications |
|---|---|---|---|
| Nickel-Base Superalloy | IN718, IN625, IN738, René 80, Mar-M247 | Up to 1050 °C (1922 °F) | Turbine rotor blades, nozzles, combustor hardware, turbocharger wheels |
| Cobalt-Base Superalloy | Stellite 6, Stellite 21, FSX-414, X-40 | Up to 1100 °C (2012 °F) | Guide vanes, shroud segments, wear-resistant seals, hot gas nozzles |
| Nickel-Iron Superalloy | Incoloy 800H, Incoloy 825 | Up to 900 °C (1652 °F) | Heat exchanger supports, reformer components, hot gas ducting |
Why Source Superalloy Castings from VastCasting
In-house vacuum induction melting combined with spectrographic chemical verification ensures every heat meets targeted metallurgical chemistry before pouring.
Every shipment is delivered with comprehensive quality documentation, including FPI test results, X-ray inspection logs, CMM dimensional reports, and full heat traceability.
Our experienced foundry team evaluates airfoil geometries, wall transitions, and ceramic core support placement during DFM review to mitigate casting risks early.
Fir-tree root profiles, mounting slots, and critical reference faces are precision-machined in-house, ensuring exact mechanical fit without inter-supplier finger-pointing.
From IN718 and IN625 to Mar-M247 and Stellite alloys, VastCasting maintains proven process parameters for a wide spectrum of proprietary and standard grades.
Full lot traceability, First Article Inspection Reports (FAIR), and standardized quality control plans ensure compliance with stringent aerospace and power gen audits.
Industries Served
VastCasting superalloy investment castings are engineered to perform under high stress and elevated thermal conditions across critical global sectors.
- Industrial Gas Turbine (IGT) OEM & MRO Servicing
- Aerospace Aircraft Engine Components & Repair
- Power Generation & Heavy Thermal Machinery
- Petrochemical High-Temperature Control Valves
- Naval Propulsion & Marine Gas Turbine Systems
Superalloy Investment Casting Process Overview
Manufacturing critical superalloy castings requires absolute precision at every production stage. VastCasting manages a controlled seven-step workflow from design optimization through final coordinate measurement.
Technical Considerations for Superalloy Investment Casting
Nickel and cobalt alloys react readily with oxygen and nitrogen at high temperatures. VIM eliminates exposure to ambient air, preventing oxidation, gas porosity, and trace element loss to ensure optimum creep resistance and thermal fatigue performance.
Standard casting tolerances for complex airfoils achieve ±0.13 mm (±0.005 in) on dimensions under 25 mm, and ±0.25 mm (±0.010 in) up to 150 mm. Subsequent CNC finishing achieves tolerances within ±0.025 mm (±0.001 in) on critical mating datums.
Nickel-base alloys deliver superior creep strength and tensile properties above 850 °C (1562 °F), making them ideal for rotating turbine blades. Cobalt-base alloys provide higher hot corrosion resistance and excellent thermal fatigue behavior, preferred for stationary guide vanes and nozzles.
VastCasting supports flexible batch sizes from initial prototype lots (10+ parts) for qualification up to full production runs. Standard lead times range between 6 to 10 weeks depending on alloy availability, core complexity, and specification details.
Request a Superalloy Casting Feasibility Review
Upload your 2D and 3D CAD drawings (STEP, STP, IGS, or PDF) for an expert DFM evaluation. Our metallurgical and tooling engineers will review alloy selection, wall thickness transitions, and precision machining requirements to provide a competitive quote within 24 hours.
Aluminum Castings and Precision CNC Machined Parts
VastCasting delivers flexible, dual-route manufacturing for engineered aluminum components tailored to automotive tuning, performance aftermarket upgrades, and commercial machinery enclosures. By integrating high-precision aluminum investment casting with high-speed custom aluminum CNC machining under one roof, we optimize unit costs, mechanical strength, and delivery timelines across every production volume.
Optimized Manufacturing Pathways for Modern OEM Components
Selecting the optimal manufacturing route directly dictates component unit cost, structural integrity, and time-to-market. VastCasting eliminates compromise by offering both aluminum investment casting near-net-shape blanks and direct billet CNC milling within a single ISO-certified facility. Beyond aluminum solutions, we also specialize in high-performance industrial components, including stainless-steel-castings for harsh operating environments.
Whether you require high-volume automotive aluminum parts with complex internal cooling channels or low-volume custom aluminum CNC machining for race car suspension brackets, our engineering team performs thorough DFM evaluations on your CAD files to recommend the most cost-effective manufacturing strategy.
Manufacturing Route Comparison
Investment Casting Near-Net Shape and Post CNC Machining
Ideal for medium-to-high volume production where complex thin-wall geometries, organic internal passageways, and minimal raw material scrap are paramount.
- Best Suited For: High-volume production runs above 500 units demanding intricate internal channels and structural weight reduction.
- Material Efficiency: Aluminum investment casting near-net-shape processing minimizes raw material swarf and machine cycle times.
- Process Flow: Precision wax pattern injection → ceramic shell molding → vacuum aluminum pouring → secondary 5-axis CNC machining.
- Target Products: Complex aluminum automotive casting components such as turbocharger housings, intake manifolds, and high-precision fluid control housings like valve-body-fittings.
Direct Aluminum Profile or Billet CNC Milling
Ideal for rapid prototype development, low-volume specialty runs, or components requiring maximum tensile strength and flawless cosmetic finishes.
- Best Suited For: Rapid prototypes, custom aftermarket tuning, and low-volume production batches from 1 to 500 units.
- Zero Tooling Investment: Eliminates initial mold development expenses and accelerates initial project turnaround.
- Process Flow: High-speed multi-axis CNC milling from solid wrought billet → precision deburring → surface anodizing or passivating.
- Target Products: Custom aluminum CNC machining plates, high-stress suspension links, adapter flanges, and billet engine mounts.
Sub-Product Range and Custom Engineering Offerings
Explore our specialized manufacturing categories designed for automotive racing, heavy commercial transport, extreme-temperature environments, and industrial machinery enclosures.
Automotive Gearbox and Exhaust System Assemblies
Engineered aluminum automotive casting housings and precision CNC-machined covers built to endure continuous vibration, mechanical shear, and thermal cycling. For extreme temperature applications, we also manufacture superalloy-high-temp-castings.
- Tight gasket sealing surfaces flat within 0.015 mm
- 100% pressure-tested for leak-free fluid containment
- Lightweight structural alloy options including heat-treated A356-T6
Engine Brackets and Intake Manifold Components
High-flow intake runners and heavy-duty structural engine brackets produced through aluminum investment casting or five-axis profile milling.
- Smooth internal fluid and airflow runner channels
- Precision-bored mounting hole patterns and threaded inserts
- High strength-to-weight ratio tailored for performance vehicles
Automotive Tuning Parts and Custom CNC Plates
Bespoke automotive aluminum parts designed for aftermarket racing applications, custom adapter plates, oil filter sandwich blocks, and suspension links.
- Machined from solid 6061-T6 and 7075-T6 billet aluminum
- Custom surface anodizing in clear, color, or hardcoat finishes
- Laser etching for custom branding, serials, and part numbers
Technical Specifications and Production Tolerances
| Parameter | Route A: Aluminum Investment Casting | Route B: Custom Aluminum CNC Machining |
|---|---|---|
| Standard Alloy Selection | A356, A380, A356-T6, AlSi10Mg | 6061-T6, 7075-T6, 2024, 5052, 6082 |
| Dimensional Tolerance | ISO 8062 CT4 to CT6 As-Cast; ±0.010 mm CNC Finish | ±0.005 mm Precision Multi-Axis CNC Finish |
| Surface Roughness | Ra 3.2 to 6.3 µm As-Cast; Ra 0.8 to 1.6 µm Machined | Ra 0.4 to 1.6 µm Milled or Turned |
| Production Volume Flexibility | Medium to High Volume from 500 to 100,000+ units | Prototypes to Low Volume from 1 to 1,000 units |
| Available Surface Finishes | Shot Blasting, Powder Coating, E-Coating, Anodizing | Clear Anodizing, Type III Hardcoat, Bead Blasting |
Ready to Optimize Your Aluminum Parts Production
VastCasting integrates full optical emission spectrographic melt verification, 3D coordinate measuring machine (CMM) checks, and pressure testing within a single facility. Eliminate cross-vendor coordination disputes and accelerate your time-to-market.
Why Choose Single-Source Casting and Machining?
Eliminate cross-vendor disputes, quality friction, and logistics delays by consolidating raw investment casting and precision CNC machining under one roof at VastCasting.
Single-Source Accountability
Full ownership of raw casting blanks and final finished tolerances—one contract, one point of contact, and zero inter-vendor finger-pointing for critical components like valve body fittings.
Optimized BOM Costs
Engineering raw casting geometries around CNC clamping fixtures reduces excess material allowance, machining cycle times, and scrap rates.
Accelerated Lead Times
Direct transfer from the foundry shell floor to precision CNC machining centers eliminates third-party transit times and redundant inspections.
Closed-Loop Quality Control
Integrated testing from raw melt spectrographic chemistry to final CMM dimensional inspection ensures fully traceable quality assurance for demanding applications, including superalloy high-temp castings.
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Single Turnkey Facility
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Cross-Vendor Finger-Pointing
CMM
Precision Reports
ISO
Certified Quality Management
Turnkey Production Route From Molten Metal to Finished Part
VastCasting integrates raw superalloy high temp castings, precision casting process controls, and multi-axis CNC finishing under one roof. Our closed-loop turnkey manufacturing process ensures seamless accountability, tighter tolerances, and faster lead times for critical OEM components.
Single-Source Synergy from Raw Alloy to Component
Eliminate multi-vendor friction and quality drop-offs between separate foundries and machine shops. Our transparent workflow aligns stainless steel castings datum points directly with CNC machining fixtures to minimize scrap, optimize machining allowances, and guarantee defect-free delivery.
Flexible Production Routes Aligned with Your OEM Requirements
Choose between near-net-shape casting followed by high-precision machining, or direct profile cutting based on part geometry, material specifications, and batch volumes.
Investment Casting & CNC Machining
Optimized for complex, high-performance components requiring tight structural integrity and refined internal channels via our controlled investment casting process.
DFM Analysis & Gating Design
Evaluates component geometry, shrinkage factors, and wall thickness uniformity before tooling fabrication.
Tooling & Mold Simulation
Executes mold flow and thermal solidification analysis to eliminate internal porosity and micro-cracks.
Precision Investment Casting Blank
Builds multi-layer ceramic shells and pours melt in controlled atmospheres for high-density blanks.
As-Cast Quality Inspection
Conducts spectrometer chemical verification and non-destructive testing prior to machining authorization.
In-House Precision CNC Machining
Executes multi-axis turning, milling, and thread tapping on key sealing faces and critical tolerances.
Surface Finishing & Passivation
Applies shot blasting, electropolishing, or functional coatings for high corrosion and wear resistance.
CMM & Pressure Quality Audit
Validates strict GD&T dimensions via 3D CMM and performs hydrostatic pressure testing on valve body fittings and shell bodies.
Direct Profile CNC Machining
Designed for low-to-medium volume runs, customized aftermarket parts, and rapid turnaround straight from certified bar stock or extrusions.
Material Selection & Verification
Sources certified billet or extruded alloy stock accompanied by full material test reports (MTR).
High-Speed Multi-Axis Milling
Cuts complex profiles directly from solid metal using high-speed 4-axis and 5-axis CNC machining centers.
Deburring & Surface Refinement
Removes sharp edges and micro-burrs through automated vibratory finishing and manual detail inspection.
Surface Anodizing & Treatment
Executes hard anodizing, powder coating, or plating to satisfy mechanical and aesthetic demands.
Quality Audit & Delivery
Verifies key dimensions, surface roughness, and plating thickness prior to protective custom packaging.
Need Guidance Selecting the Optimal Route?
Submit your 2D/3D engineering drawings to VastCasting for a free DFM evaluation and route-cost analysis.
Inspection and Quality Assurance for Critical Applications
At VastCasting, zero-defect manufacturing is embedded into every stage of our investment casting and in-house CNC machining operations. From pressure-containment valve body fittings to high-stress turbine components, our advanced investment casting quality control infrastructure ensures strict compliance with international engineering standards, client specifications, and stringent tolerance limits.
Chemical Composition Analysis
Precise melt verification prevents alloy non-conformity long before liquid metal is poured into ceramic molds.
- Optical Emission Spectrometry: Real-time spectral analysis for 304/316 stainless, duplex steels, nickel, and cobalt superalloys.
- Traceability: Complete heat-number tracking from raw ingot master batches to final CNC-machined components.
Dimensional & Geometric Control
Rigorous dimensional casting inspection guarantees precise sealing surfaces, internal threads, and critical mounting datums.
- 3D CMM Measurement: Multi-axis Coordinate Measuring Machines verify complex geometric tolerances and true positions.
- Optical Profilometer: High-resolution surface roughness and profile scanning for intricate aerodynamic geometries.
Non-Destructive Testing (NDT)
As a qualified NDT foundry, we detect subsurface and surface micro-defects without compromising structural integrity.
- X-Ray Radiography: Industrial radiographic X-ray inspection detects internal shrinkage, gas porosity, and inclusions.
- FPI Testing: Fluorescent Penetrant Inspection reveals minute surface cracks on high-temperature turbine parts.
Pressure & Mechanical Integrity
Thorough testing validates pressure containment for fluid control valve bodies and structural strength for heavy components.
- Hydrostatic & Pneumatic: High-pressure shell and seat testing to confirm leak-tight reliability in critical fluid service.
- Tensile & Hardness: Quantitative verification of yield strength, elongation, impact resistance, and Brinell/Rockwell values.
Advanced Metrology & Non-Destructive Testing Facility
Uncompromised Reliability as an ISO Casting Manufacturer
Critical industrial applications demand absolute structural soundness and repeatable component reliability. As an established ISO casting manufacturer, VastCasting operates an in-house quality inspection laboratory equipped with spectrographic, dimensional, and advanced NDT instruments. Every batch undergoes rigorous, closed-loop investment casting quality control to ensure raw chemistry, mechanical properties, and finished dimensions comply strictly with ASTM, EN, ISO, and DIN specifications.
Whether you require pressure containment validation for CF8M stainless valve bodies or structural defect evaluation for superalloy high temp castings such as nickel-base turbine guide vanes, our certified technicians execute rigorous casting inspection workflows. We provide comprehensive EN 10204 3.1 Material Test Reports (MTRs), dimensional CMM layouts, and NDT certificates alongside every production batch to streamline your incoming inspection and regulatory compliance.
Comprehensive Inspection Methods & Standards
Detailed breakdown of quality verification procedures applied across our investment casting foundry and precision CNC machining lines.
| Testing Category | Primary Equipment | Key Parameters Verified | Target Components |
|---|---|---|---|
| Chemical Analysis | Optical Emission Spectrometer (OES) | Elemental composition, carbon equivalent, chemical heat verification | 304/316 stainless steel, duplex steel, cobalt & nickel superalloys |
| Dimensional Inspection | 3D CMM & Optical Profilometer | Geometric tolerances, concentricity, thread pitch, surface finish (Ra) | Machined valve sealing faces, pump impellers, engine brackets |
| Non-Destructive Testing | Industrial Radiographic X-Ray & FPI | Subsurface gas porosity, shrinkage voids, micro-cracks, inclusions | Gas turbine blades, nozzle vanes, high-pressure hydraulic bodies |
| Pressure & Mechanical Integrity | Hydrostatic Tester & Universal Tensile Machine | Burst pressure, leak-tight containment, yield strength, hardness | Y-strainers, pipe flanges, automotive gearboxes, pump housings |
Get a Turnkey Quote for Your Custom Cast and Machined Parts
Partner with VastCasting, a premier custom casting manufacturer in China. Upload your 2D prints and 3D CAD files for a thorough manufacturing assessment and a competitive investment casting quote within 24 hours.
Free DFM Review Included
Complimentary Engineering Feasibility Assessment
Every submission includes a complimentary Design for Manufacturability (DFM) analysis. Our engineering team reviews geometry, tolerance stack-ups, and alloy selection to minimize unit costs and streamline production.
Supported File Formats
Direct Contact Channels
Request Quote for Precision Casting & CNC Machining
Submit your technical parameters below to receive a line-item quotation and DFM assessment within 24 hours. We serve applications ranging from valve body fittings to advanced machinery.
24-Hour Quotation
Fast pricing & DFM feedback
ISO Certified Quality
Spectrometer, CMM & NDT verification
Precision Machining
In-house casting to finish machining
Global Delivery
Exporting superalloy high-temp castings to OEMs worldwide