Post‑sand‑casting machining involves CNC processing of as‑cast sand‑cast parts to achieve precise dimensions, improve surface quality, and add functional features such as bolt holes, sealing surfaces, threads, and precision mating interfaces. Sand casting is ideal for producing large, complex, or low‑volume metal parts with good structural integrity; subsequent CNC machining ensures the part meets tight tolerances and assembly requirements. This combined process is widely used in heavy machinery, pumps, valves, automotive, marine, and construction equipment.

Our Capabilities in Machining Sand-Cast Components

We specialize in machining various sand‑cast materials, from cast iron and steel to aluminum and copper alloys. Our shop is equipped with heavy‑duty CNC mills, lathes, and boring machines capable of handling large, irregularly shaped castings with consistent precision and stability.

From Sand Casting to Finished Part

Submit your casting drawing or sample for a manufacturability analysis. We provide DFM suggestions to optimize both the casting design and machining setup for cost efficiency and quality.

Common Sand‑Cast Materials We Machine

▪ Cast Iron: Gray Iron (GG25, GG30), Ductile Iron (GGG40, GGG50)

▪ Cast Steel: Carbon Steel, Low‑Alloy Steel

▪ Cast Aluminum: A356, A380, ZL101, ZL104

We can source cast blanks or machine your supplied castings.

Finishing & Treatment Options

▪ Shot/Sand Blasting

▪ Grinding & Deburring

▪ Primer & Industrial Painting

▪ Galvanizing / Zinc Plating

▪ Anti-Rust Oiling / Phosphating

▪ Precision Machining of Sealing Surfaces