DSAW pipe is made of steel plate, which is often extruded by automatic double-wire double-sided submerged arc welding process. DSAW pipeline is simple, efficient and low cost. In steel tube forming steel plate, the deformation is uniform, the residual stress is small, and there will be no scratch on the surface. The diameter and thickness specifications of steel pipe can be used flexibly, and the advantages of producing large diameter thick seam steel pipe are more obvious. In the production process, pre-welding can be carried out after internal and external welding to ensure that there are no wrong edges, welding deviation and impermeability defects during welding, and welding quality control is easier.


The advantages of DSAW tube are more obvious. In the production process, pre-welding can be carried out after internal and external welding to ensure that there are no wrong edges, welding deviation and impermeability defects during welding, and welding quality control is easier.


Detailed advantages of DSAW tube:
The first advantage is complete automation.
The second advantage is that it is submerged arc welding, so its heat exchange and protection performance is relatively strong, and the welding quality is relatively high.
The third advantage is that because SAW is submerged in SAW, high current can be used and the welding efficiency is relatively high. Recently, China is carrying out the West-to-East Gas Transmission Project.


Into the welding wire, the welding device and wire are continuously fed into the welding wire. This welding method is continuous wire feeding. The flux of the welding wire and the welding part is covered by the arc, so that the flux of the welding wire and the welding part melts and evaporates into a cavity. The arc burns stably in the cavity. Therefore, it is called submerged arc welding.


In the cavity. Pipeline is a kind of high strength steel. This kind of pipe is prefabricated in the factory first, and then arrives at the spot. In the field of welding, this kind of pipe factory adopts submerged arc welding in the welding process. Submerged arc welding has developed into double-wire submerged arc welding, and multi-wire submerged arc welding, which further improves the efficiency.