A truss refers to a lattice structure composed of interconnected members at the ends, while a pipe truss refers to a structure where all members are circular pipe members. In most cases, the members in the truss are only subjected to axial tension or pressure, and the stress is evenly distributed on the cross-section, making it easy for the material to play its role. These characteristics make the truss structure material economical and have a small self weight. Easy to form various shapes to adapt to different purposes, such as simple supported trusses, arches, frames, and towers, truss structures have been widely used in many large-span venue buildings today, such as convention centers, sports venues, or other large public buildings. Most members in truss structures are connected by welding at nodes, and before welding, it is necessary to cut the web and chord members according to the shape of the weld seam of each member to be welded. This requires cutting the intersecting lines at the ends of the web members and slotting the chord members. Due to the intersecting linear shape of each member in the truss structure, the cross-sectional shape of the member ends is relatively complex. Therefore, in practical cutting and processing, two methods are generally used: mechanical automatic cutting and manual cutting.