The machined surface of high precision parts is easy to rust after being stored for a period of time. Especially in humid summer conditions. Rust will be more serious. Rust prevention is very difficult, how to do?

What is high precision parts processing, small and delicate, no matter from the material and process, are very heart of the process of production, not batch production of parts, but also belongs to a kind of mechanical p......

The main functions of the bolts head or screw head are carrier and wresting, which are mainly divided into hexagonal heads, double hexagonal heads, flower keys, plate heads, sediment, stigma and other head shapes.