2. Horizontal welding Horizontal plate welding is generally called flat welding. The welding position with weld inclination of 0 ~ 5 and weld rotation angle of 85 ~ 95 is called flat welding position, and the welding at flat welding position is called flat welding. This welding position belongs to the easiest welding position among all welding positions.

3. Fish-scale welding is a process method of welding, which is named because its welding plane is fish-scale.