Special attention should be paid to the circular hollow section when welding. When welding, pay attention to seamless butting. There is no gap in the joint requirements, and it should be docked. Now let's mainly see how the lower circular hollow section is welded.


Circular hollow section is widely used in engineering construction, mechanical manufacturing, steel structure engineering, shipbuilding, solar power support, steel structure engineering, etc. In addition, circular hollow section is also used in engineering installation industry, such as curtain wall, welding structure and grid structure.


In order to ensure the strength after butting, cross ribs can be welded in a circular hollow part, and the circular hollow part can be tilted at the butt joint for penetration. When butting, it can be spot welded to another rectangular pipe or H-shaped steel to maintain the flatness after butting.


Welding is not as small as possible, but the welding that meets the requirements of use is excellent. Drying cannot be done without cost. As you said, spot welding can only be carried out, but can it meet the strength requirements? I don't know about you.