Double-layer welded steel pipe (GB/T11258-1989)

Double welded steel pipe

Double welded steel pipe, or dual seam welded pipe, is made by welding two pipes and then fibering a steel sheet in between the two pipes. It has been around for some time as a material for welding and have been used in many projects. It has been extensively used in automotive, aerospace, and other industries.

Double welded steel pipe is made from a high grade material that is extremely durable and resistant to corrosion. It is designed to withstand high temperatures and the harshest of environmental conditions. Depending on the application, double welded steel pipe can be used in a variety of applications including structural support, pipelines, combustion chambers and structural walls.

When double welded steel pipe is employed, it is necessary to ensure that it is manufactured to a very high quality standard. This is because even a slight variation in the welds can lead to a leak or complete failure of the pipe. To ensure the best quality weld, it is important that all the required welding procedures and processes are followed. These procedures and processes include forming, cutting, inserting the steel sheet, drawing, and finally welding the pipe.

The welding process for double welded steel pipe involves the use of a metal active gas welding machine. During the welding process, an oxygen and metal dioxide gas is applied to the steel to ensure an even weld. Once the metal is heated to the welding temperature, the Gas Metal Arc Welding (GMAW) operator will arc the weld to ensure a complete and seamless weld. A perfect seam can only be achieved when all the welds are followed.

The welding process used for double welded steel pipe is much more complicated and time consuming than other types of welding processes. Due to the complexity involved with this type of welding, certified GMAW welders are required to complete the job. These welders must be able to work on thin-wall steel pipes and thin-wall aluminum pipes. In some cases, the welds must be inspected by an engineer or inspector to ensure the welds are of the highest quality.

When choosing a welding contractor for a double welded steel pipe, it is important to make sure they have experience in the field. It is also important to ask for references and check that the contractor is certified by the American Welding Society (AWS). This certification shows that the contractor has the necessary skills and experience to weld steel pipes. Additionally, it is also important to check that the welding contractor is Safety Management System (SMS) certified. The SMS certification is a benchmark of excellence in welding and is awarded to welders who have proven that they are able to work safely and meet the welding industrys highest standards.

In conclusion, double welded steel pipe is a versatile, durable, and reliable material that can be used in a variety of applications. It is important to choose an experienced certified welding contractor to ensure the highest quality welds. With a proper welding process and a qualified welding contractor, double welded steel pipe is sure to withstand the test of time.

介绍

Double-deck welded steel pipe (GB/T11258-1989) is a welded steel pipe made by welding two steel plates of different thickness and different base metal. The weld quality of double-deck welded steel pipe is better than that of single-deck welded steel pipe. Double-deck welded steel pipe is a kind of composite steel pipe which has strong advantage in mechanical properties, good wear resistance and corrosion resistance, and also has good compatibility between base metal and welding layer. It can applied in many fields such as machinery, automobile, pressure vessels, bridges, ships and so on.

The production method of double-deck welded steel pipe is firstly to weld two different steel plates with the same or different thickness into the shape of steel pipes. After welding, burrs or weld scarfs are removed, and the surface is cleaned with a rough grinder. Then it enters into the post-treatment process. At the same time, it should strictly follow the technological process of double-deck welding. The technological process of double-deck welding includes sheet welding, surface grinding and polishing, temporary assembly, impact test and expanding. Finally, a double-deck welded steel pipe product is manufactured.

Double-deck welded steel pipe has high mechanical properties, good surface quality and great welding ability. It has good corrosion resistance and wear resistance, which can better meet the application requirements of different work environments. In short, double-deck welded steel pipe is not only popular at home, but also widely used in some special environment conditions all over the world.