With the development of infrastructure, the pipeline industry, as one of the basic industries, has received more and more attention. As one of the largest pipeline markets in the world, China maintains a trend of rapid growth, and the development prospects of the pipeline industry are very broad.
As a manufacturer of submerged arc welded steel pipes, PMC has always followed industry trends and continuously carried out technological innovation. Adopt advanced production technology and technology and select high-quality raw materials. Automated production lines and equipment and strict quality management systems ensure high quality, high performance and provide high-quality services.
The large-diameter submerged arc welded pipes produced by PMC are of excellent quality and excellent performance. From steel plate pretreatment to hemming forming, internal welding, external welding, straightening and cutting, each step is carefully operated to ensure the quality of the weld and the quality of the steel pipe. Strength of. These steel pipes feature high strength, high-quality welds and long service life, and have been widely recognized and praised within and outside the industry. It has excellent performance in the petrochemical industry, slurry transportation, sand pumping, dredging, beaches, rivers, waterways, urban environmental protection, engineering construction and other fields.
What is submerged arc welding?
Submerged arc welding is an automated welding method that places the metal material to be welded under the welding rod so that an arc is formed between the material to be welded and the welding wire. This technology is commonly used in welded steel structures, shipbuilding, bridge construction and other fields. During the welding process of submerged arc welding, the molten pool between the welding wire and the material to be welded is protected within a layer of barrier. This barrier can reduce harmful elements such as oxygen and nitrogen in the deposited metal and reduce the temperature of the molten pool. The formation of spatter and pores, thereby improving welding quality and efficiency.
The characteristics of submerged arc welded steel pipes: Straight seam welded pipes (
LSAW Pipe) have simple production process, high production efficiency, low cost and rapid development. The strength of spiral welded pipe (
SSAW Pipe) is generally higher than that of straight seam welded pipe. It can use narrower blanks to produce welded pipes with larger diameters, and can also use blanks of the same width to produce welded pipes with different diameters.
Applications of submerged arc welding:
Submerged arc welding is widely used in steel structure manufacturing, ship manufacturing, bridge construction and other fields. In terms of steel structures, submerged arc welding can be used for plate welding, fillet welding and T-shaped welding, etc., and can provide high-strength welded joints. At the same time, the welding dead angle is small, the pore formation rate is low, and the surface quality is good, which greatly reduces the welding defect rate.
Submerged arc welding is also a commonly used technology in shipbuilding and bridge construction. Submerged arc welding is conducive to improving production efficiency and production environment, reducing manual operations, and improving production quality and precision.
Applications of large diameter submerged arc welded pipes:
1. In the petrochemical industry, large-diameter submerged arc welded pipes are mainly used to transport high-temperature and high-pressure oil and natural gas. Due to its high pressure-bearing capacity, it can effectively prevent leakage and pollution, ensuring safe and efficient transmission of energy. In addition, its corrosion resistance enables it to work stably for a long time in various complex environments, reducing maintenance costs.
2. In the field of slurry transportation, large-diameter submerged arc welded pipes are widely used because of their high pressure-bearing capacity and low resistance characteristics. It can transport slurry efficiently, reducing transportation costs and reducing environmental pollution.
3. In environments such as beaches, rivers, and waterways, large-diameter submerged arc welded pipes are used in winter water transportation, drainage and other projects due to their low-temperature resistance.
4. In urban environmental protection and engineering construction, large-diameter submerged arc welded pipes are also widely used because of their excellent performance.
In these projects, the excellent performance of large-diameter submerged arc welded pipes has been fully utilized, providing reliable support for various infrastructure projects.
Large diameter submerged arc welded pipes have a wide range of applicable fields and uses. Its unique properties make it irreplaceable in many fields. At the same time, with the continuous advancement of technology and the continuous expansion of application requirements, the application prospects of large-diameter submerged arc welded pipes will also be broader.
Read more: Advantages and Disadvantages of Welded Steel Pipes
