Brushed processing can also be called sweep sand, sweep nylon, and so on. Usually according to the surface effect is divided into straight silk and disorderly silk. Straight silk is also called hair silk, messy silk is also called snow pattern, silk type has a great subjectivity. Each user has different requirements for surface lines and different preferences for line lines. Some people think hair is beautiful, some people like snow pattern, some like long hair, some like short hair. Due to the variety of wire effect, it is usually difficult to describe and define, but by determining the processing method of wire drawing, grinding products used, process parameters and other ways to determine the wire effect.