There are many kinds of screw, which can be divided into several types according to the structure at room temperature.1. Austenite type: 304, 321, 316, 310, etc.2. Martensite or ferrite type: such as 430, 420, 410; stain···

There are many kinds of screw, which can be divided into several types according to the structure at room temperature.1. Austenite type: 304, 321, 316, 310, etc.2. Martensite or ferrite type: such as 430, 420, 410; stain···

Today, a customer came to our factory twice before. Today, General Wang came to inspect the factory in person. After the riveting of the core-pulling rivets was finished, the requirements were very flat, and no need to g···