Custom precision stainless steel Valve casting parts

Our company can supply various  Sand Casting Parts (OEM)  according to the customers’ drawings and requirements. Please offer us your enquiry with detailed drawings, specifications, unit weight, quality requirements and pictures. We will supply you not only the products with  good quality  but also  competitive price  and  satisfactory service! 

1. Material: Ductile iron, Stainless steel , Steel, Grey iron, Aluminium alloy, Copper alloy.
2. Process: Sand Casting.
3. Heat Treatment: Quenching, Tempering, Annealing, Normalizing, Nitridation, Carburization.
4. Surface Treatment: Zinc-Plated, Hot dipping galvanized, Polishing, Painting, Powder coating.
5. Machining Equipment: CNC Machines, Turning Machines,Drilling Machines , Milling Machines, Grinding Machines,etc.
6. Measuring Tool: CMM, Projector, Vernier Caliper, Depth Caliper, Micrometer, Pin Gauge, Thread Gauge, Height Gauge, etc.
7. Weight: 0.1-3000kgs.
8. Application: Machinery Parts, Construction Industry, etc.
9. Package: Plywood or wooden case, pallet (As per customer’s requirement).

With our powerful precision CNC machining equipments such as lathes, milling machines and drilling press, we can easily operate Turning, Drilling and Milling. Furthermore, we are able to run other operations like cutting, grinding, bending, shaping, planning and sawing. 

Overall product quality inspections is from raw materials incoming inspection, semi-finished products inspection, specimen testing, and products testing. We strictly follow the procedures of ISO 9001, IQC, IPQC & FQC. SYI has independent inspectors and QC engineers to check & record in accordance with the procedure and submited for approval/audit.

SYI Group has 26 years of independent development and design ability. We have 30 senior engineers, who is skilled at AUTO CAD, PRO ENGINEER, SOLID WORKS and other 2D & 3D softwares. We are able to design, develop, produce and deliver your PO according to your drawings, samples or just an idea. Dual control of standard products and OEM products.

SYI Group achieves the certificate of ISO 9001:2008 for the Quality Management System from TUV Rheinland. Meanwhile, SYI Group holds the Kitemark License/BSI/SGS/BV/NF/CE/WRAS/UL/FM certificates for different products.

 SYI Industrial Co., Ltd.

1. Email: duwei# ( # = @ )
2. Tel: 0086 351 4192139
3. Fax: 0086 351 4040962
4. Website:

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