Submerged arc welding is a very common arc welding method in welding processes, which can be classified into different types based on different welding materials, thicknesses, shapes, positions, etc. The following are several welding methods for submerged arc welding:

1. Manual submerged arc welding: Manual welding, flexible, portable, suitable for small batch and personalized welding processes.

2. Automatic submerged arc welding. Using automatic machinery for welding is safe, stable, and efficient, suitable for large-scale production and highly repetitive welding processes.

3. DC submerged arc welding. Using a DC power supply to heat and melt metal through an arc between the electrode and the workpiece, it is suitable for welding various metal materials, especially thick materials.

4. AC submerged arc welding. Using an AC power supply to change the polarity between the electrode and the workpiece in a short period of time, making the welding process more stable and reducing arc flicker, suitable for welding materials such as stainless steel and aluminum alloys.

5. DC repeated non plasma welding. Under the action of a DC power supply, plasma generated by high-frequency current perpendicular to the surface of the workpiece is used for welding materials with high melting points and difficult welding, such as tungsten and molybdenum.

6. Flat welding. During the welding process, slag is prone to flow, forming a wide and flat weld seam, suitable for situations with flat requirements for welded parts.

7. Vertical welding. The submerged arc welding method conducted in the vertical direction is suitable for pressure vessels, pipelines, boxes and other occasions that require high welding strength and sealing.

8. Single sided submerged arc welding. During the welding process, only one side melts the metal material.

9. Double sided submerged arc welding. During the welding process, melting is carried out simultaneously on both sides of the weld to evenly melt and form a molten pool, resulting in better welding quality.

In addition, there are methods such as multi wire submerged arc welding, single electrode submerged arc welding, and double electrode submerged arc welding. These welding methods each have their own characteristics and are suitable for different welding situations and needs.