Investment casting is a major supplier of mechanical industry blank.It is one of the important basis in machinery manufacturing industry  and occupies an important position in national economy.We,Ningbo Tongda foundry has made great development in recent years.

In our foundry, we make lots of railroad maintenance castings. Such railroad castings are used widely for replacing and repairing the railroads all over the world. 

Our steel castings produced by investment casting process can replace many steel fabricated parts.The process is ideal for multi piece fabrications using over 4mm thick steel sections that also need drilling or machining. Below photos are a bracket that made with different processes.

Tongda foundry has the ability and skills to deliver investment castings for oil and gas industry.We have been supplying quality investment castings to the oil and gas industry for more than 28 years.As these investment castings are used in high temperature and high working power,so they encounter h......

Investment casting is mainly made up of mold making,wax pattern production,shell making and other processes.Wax pattern is the shape that wax injected into the cavity of mold.To obtain investment casting parts with high size accuracy and surface finish,wax pattern itself should have high size accura......

Tongda foundry casts both aluminum impellers and steel impellers in China. Such cast impellers are widely used in lots of industries. Then, what's the difference between Aluminum Impeller and Steel Impeller?