End-to-End Precision Metal Manufacturing Solutions

At Senjia Group, we do more than just pour metal. We provide comprehensive, one-stop OEM manufacturing solutions designed to take your custom metal components from raw 2D/3D drawings to fully finished, ready-to-assemble parts.

By keeping the entire production process in-house, we guarantee strict quality control, faster lead times, and reduced supply chain risks for our global clients.

Our Core Services

1. Silica Sol Investment Casting (Lost Wax Process)Our core expertise lies in high-precision investment casting using the advanced silica sol process. This allows us to produce complex geometries and near-net-shape parts that other casting methods simply cannot achieve.

• Weight Range: 0.01 kg to 50 kg.

• Materials Cast: 304/316/316L Stainless Steel, Carbon Steel, Alloy Steel, and Custom Tool Steels.

• Advantage: Exceptional surface finish (Ra 3.2-6.3 µm) and tight linear tolerances, significantly reducing the need for heavy secondary machining.

2. Precision CNC MachiningCasting is often only the first step. To ensure your parts meet their final assembly requirements, our facility is equipped with advanced CNC turning and milling centers.

• Capabilities: Drilling, tapping, threading, boring, and precision milling.

• Advantage: You receive a finished component manufactured to your exact CAD specifications, eliminating the need to hire a secondary machine shop.

3. Premium Surface Treatments & FinishingThe final look and performance of a metal part are crucial, especially for marine hardware, architectural glass clamps, and food-grade machinery. We offer a full spectrum of surface finishes:

• Polishing: Mirror Polishing, Satin/Brushed Finish, and Electro-polishing.

• Coating & Plating: Passivation, Zinc Plating, Chrome Plating, and Black Oxide.

• Abrasive Blasting: Sandblasting and Glass Bead Blasting for a uniform matte finish.

4. Engineering Support & Tooling DesignA successful casting starts with a perfect mold. Our in-house engineering team works closely with your designers to ensure the highest level of manufacturability (DFM).

• Services: CAD/CAM 3D modeling, mold flow analysis to prevent casting defects, and in-house aluminum tooling fabrication for wax injection.

Uncompromising Quality Control

We back our services with rigorous testing protocols. From raw material to final shipment, every batch is verified. Our inspection capabilities include:

• Chemical Analysis: 100% material verification using Optical Emission Spectrometers.

• Dimensional Accuracy: Verified by CMM (Coordinate Measuring Machines).

• Mechanical Testing: Hardness testing, tensile strength, and yield strength analysis.

Ready to start your custom casting project?Stop managing multiple suppliers. Let Senjia Group handle your project from tooling to final finishing.

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