Custom Casting Service

We offer custom metal casting services including sand casting, die casting, and investment casting, ideal for medium to large-volume production. Our team has extensive experience with aluminum, stainless steel, cast iron, and zinc alloys, serving industries like automotive, industrial equipment, and energy.
Using precision molds and rigorous quality control, we ensure structural strength, dimensional accuracy, and cost-effective manufacturing. Post-casting CNC machining and surface treatments such as powder coating, polishing, or anodizing are available for finished components.
One-stop solution from casting to final precision finishing.
Why Choose BestPro for Casting?
We specialize in a wide range of custom metal cast parts as mentioned above and include:
- Electric Motor Housings
- Gear Boxes
- Pump Housings and Parts
- Valve Bodies and Parts
- Fire Sprinkler Frames and Fire Sprinkler Parts
- Architectural parts and elements
- Marine parts and Sporting equipment parts
- And many other industrial and commercial cast metal parts

Design
Our efficient die-casting engineer team will help you design and improve the casting, we will do mold flow analysis and share the Die tooling ejector pin location and Pouring gate with our customer directly to ensure the first article sample can be mostly approved at the first sample submission time.
Our Processing Parameters

- Processing Capabilities
- Sand Casting, Die Casting, Investment Casting, lost wax Casting, Gravity Casting
- Common materials
- Cast Iron, Aluminum Alloys, Steel, Bronze, Copper
- Dimensional tolerance
- ±0.2 mm to ±0.5 mm
- Surface Treatment
- Deburring, Polishing, Sandblasting, Electroplating, Coating, Heat Treatment, Descaling, Chemical Plating, Spray Coating
Additional Casting Services
In addition to the casting operation, we also offer value-added services such as full or partial machining components and surface conditioning such as:
Polish Process
Deburring Process
CNC Process
Tapping Process
Painting (dip or spray)
Plating (all types such as Chrome, nickel, flash copper, brushed finish, oil bronze finish, etc.)
Powder coating
Anodizing
We also offer semi or fully assembled parts or sub-assemblies.
Multiple Production Process

Industry Applications and Key Info
| Industry | Common Custom Parts | Materials | Surface Treatments | Casting Processes | Key Points & Challenges |
|---|---|---|---|---|---|
| Automotive | Engine blocks, housings, brackets, manifolds | Aluminum alloys, gray iron, ductile iron | Shot blasting, painting, powder coating | Sand casting, die casting, investment casting | Dimensional accuracy, cooling control, defect prevention |
| Aerospace | Turbine blades, casings, mounts | Superalloys, titanium alloys, aluminum | Anodizing, polishing, NDT inspection | Investment casting, vacuum casting | High strength-to-weight ratio, tight tolerances, porosity control |
| Industrial Equipment | Pump bodies, valve housings, impellers | Cast iron, stainless steel, bronze | Machining, painting, powder coating | Sand casting, shell molding | Internal cavity design, wall thickness uniformity |
| Agriculture Machinery | Gearboxes, housings, joints | Cast steel, ductile iron, gray iron | Anti-rust coating, painting | Green sand casting, resin sand casting | Durability, impact resistance, economical tooling |
| Energy & Power | Turbine housings, connectors, bases | Stainless steel, alloy steel, copper alloys | Passivation, electroplating, polishing | Investment casting, sand casting | Heat resistance, corrosion resistance, structural stability |
| Marine | Propellers, pump housings, fittings | Brass, bronze, stainless steel | Anti-corrosion coating, polishing | Sand casting, centrifugal casting | Saltwater corrosion resistance, precision balance |
| Railway & Heavy Equipment | Couplers, brackets, axle components | Cast steel, manganese steel | Heat treatment, blackening, painting | Sand casting, lost foam casting | Shock resistance, wear resistance, large part integrity |
| Consumer Goods | Cookware bases, decorative hardware | Aluminum, stainless steel, zinc alloy | Powder coating, chrome plating | Die casting, gravity casting | Surface finish quality, mold cost, mass production |
Interested in premium custom machining services for your next project?
Contact us for a quote or upload your design files (DWG, IGES, STEP, PDF) — no minimum order quantity required.
Quality Assurance & Quality Control

Our integrated quality assurance (QA) and quality control (QC) systems ensure the highest production standards. ISO standard certifications uphold our quality management system, while the QC team conducts detailed inspections using advanced, calibrated equipment like CMM, VMS, calipers, hardness testers, etc… This dual approach “focused on prevention and precise inspection” ensures all parts meet stringent specifications and customer requirements, maintaining top precision, performance, and reliability.
View Our Custom Past Projects



Contact BestPro for all things Casting Custom!
Please request a quote, contact us, or email brighty@bestprocnc.com for additional information about our services.
