Flat welding also known as butt welding, welding, welding pieces should be left equal to the thickness of the gap.It features that the molten metal will not flow out of the molten pool, good permeability, easy operation, is the most common form of welding.

In flat welding, the droplet can naturally drop to the molten pool by relying on its own weight.The crystallization position of the molten pool is in the level, the crystallization condition is good, the weld line is beautiful, it is the most suitable and the most easy to operate position among all welding positions, and the molten pool metal liquid is not easy to lose.In production, can use flat welding should be as far as possible with flat welding, can not use flat welding should use welding position-shifting machine and welding roller frame (welding tire) to try to transfer to the flat welding position welding, especially the rotating pipe and ring joint.Some welding methods (such as submerged arc welding) can only operate smoothly in the flat welding position.