1. If it is a blade between tank bodies, the transverse weld seam belongs to a corner weld seam. At this time, the angle between the welding axis of the equipment and the spiral blade needs to be maintained at around 45 °. At present, the spiral blades in the production process of transportation tanks in China are all manually welded. Due to the harsh working environment of the spiral blades, the quality of welding cannot be guaranteed, so their production efficiency is still relatively low.

2. The spiral blades utilize carbon dioxide gas protection technology, and the manufacturer uses a double gun butt welding method to control the average speed of horizontal carbon dioxide welding in order to ensure the quality of the spiral blades.

The spiral blade adopts a relatively new rolling process in its forming process, so we should always pay attention to the welding process of the equipment during its production and processing. This is a crucial step.