The earliest cold-dune processing technology can be traced back to World War II. At that time, Germany used cold-pier technology to produce bullet casings. Until the modern cold pier processing technology is mainly used to produce a large number of batches of fasteners, such as nuts and bolts. With the rapid development of modern technology. The cold heading machine has also become very extensive from the most primitive and single function, and the function has been constantly changing. For the different needs, different types of multi-function cold heading machines have appeared on the market. Our life is therefore also colorful.
The above is the historical evolution of the processing of cold piers. From this we can see that the history of cold pier processing technology is rich and colorful