English
BestPro offers precision sand casting services for large, heavy, or primary structure parts in commonly used materials. Critical features are completed in CNC machining, surfaces treated if required, and optional sub-assembly means parts are ready to go on delivery.
Send Your Drawings 
Tolerance
Sample Delivered
9001:2015
Size / weight of parts beyond the capacity of die or investment casting
Material strength is more important than surface finish.
Carbon steel, alloy steel, stainless steel, or cast iron is required
High tooling cost cannot be justified with low to medium volume
BestPro helps confirm the right process early, reducing unnecessary cost and production risk.
Quality is built into the process, not corrected later:
Optimized gating and solidification design for reliable castings
Approved foundry partners with stable, repeatable processes
Material certification and optional NDT (UT, MPI, X-ray) inspections
Machining allowance planned before casting to ensure final accuracy
Critical dimensions are machined in-house to achieve assembly-ready components. Sealing surfaces, functional features, and interfaces are controlled to tight tolerances, not just left as cast blanks.
| Material | Typical Application |
| Carbon Steel | Pump housings, valve bodies. Durable for structural parts. |
| Alloy Steel | Gearboxes, high-strength structural components. |
| Stainless Steel | Corrosion-resistant components, hygienic industrial parts. |
| Ductile / Gray Iron | Heavy machinery housings, mining equipment. |
One-time mold cost
Sample inspection
Mold optimization
Stable dimensions
Approved suppliers
CNC & post-finishing
NDT & QC options
100% after-sales support
BestPro is a professional China sand casting supplier for custom produced sand casting based OEM parts exported overseas with high quality, excellent delivery time.
Drawings or specifications are welcome for evaluation and quotation.
Submit Your Drawing 
