About Castle International MFG Co. Ltd Castle International Trade Co. Ltd. is a leading enterprise specialized in developing, engineering, manufacturing and exporting mechanical products. We are located in Ningbo, which is famous for having the second biggest container port in mainland China.
Our Main Products Our main products are casting, machining, forging and stamping parts, which are used in metallurgy, automobile, chemical, ship and hardware engineering industries. We use ferrous metals such as stainless steel, alloy steel, ductile iron and more, as well as non-ferrous metals such as brass, aluminum, aluminum alloy and zinc alloy. Our products have been sold all over the world.
Production Capability Castle has a very strong engineering team. All engineers are familiar with AutoCAD, SolidWorks, and Pro/E software. We can produce samples when given ideas or sketches.
Castle has a full range of equipment in order to make different kinds of products:
- Die casting machines
- Investment casting and sand casting ovens
- CNC controllers
- Forging machines
- Punches
- Machinine centers
Quality Control
- First article inspection
- Inline production inspection
- Pre-shipment inspection
All inspection reports are sent to customers for approval. All reports are submitted with COC. In order to meet clients' requirements, Castle can submit PPAP and CPK documents.
To ensure quality, Castle uses these machines:
- Hardness testers
- Yield strength testers
- Impact strength testers
- Metallographic analyzers
- CMM
