Spiral submerged arc welded pipe widely used double submerged arc welding technology, the principle: Submerged arc welding is carried out by arc welding heat, and manual arc welding is different: submerged arc welding wire is bare, no paint above submerged arc flux is indeed to be welded in advance at the shop, submerged arc welding wire inserted into the flux, the arc is burning in flux

Wire contact with the workpiece, press the start button and instantly after pressing, welding wire and workpiece energized Withdrawing wire arc ignition, welding carriage next to advance to the delivery of continuous wire, maintain the arc burning in flux layer below the arc the formation of the weld pool. Around the arc, the flux melts to form a cavity. The empty and the pool continues to advance, while the pool behind the metal solidified, forming a continuous weld. Because this process is carried out in flux, so we can not see with the naked eye. By means of X-ray photography can be seen. Due to the use of spiral submerged arc welding pipe welding technology, in addition to such high productivity; less production assistant time, saving time change electrodes; clean and free of spatter welding conditions, saving cleanup time; high weld quality. But also for the delivery of spiral pipe plant provides the necessary conditions for such a large quantity of spiral welded pipe production time is guaranteed, so there still is widely used with.