Three New Processes for World Seamless Steel Pipe Production in the 21st Century

First, the use of laser welding technology. Laser welding technology is the application of optical principle, the use of laser after focusing on the tube ends of two tubes, the two ends of the welding, the technology is simple, the laser welding of stainless steel should be used after the module mainly is the pulsed YAG laser welding which has a good consistency of technology, high production efficiency, more secure and reliable. Laser welding has a good weld shape, can be connected with different materials, and is suitable for longitudinal, girth and number of welding, so laser welding technology has become the worlds stainless steel pipe production advanced welding technology.

Second, longitudinally submerged arc welding technology. In order to promote the welding efficiency of stainless steel tubes, the manufacturer uses the longitudinally submerged arc welding technology, which is a kind of welding technology. Submerged arc welding is an arc welding process for welding by means of flux shielded arc. Submerged arc welding is widely used. Generally, welding equipment with high paralleling capability and simple operation is used. It not only simplifies the operation, improves the welding speed and efficiency, but also ensures the welding quality and safety.

Third, gas-shielded welding technology. Shielded metal arc welding (SMAW) is the most widely used process technology, but the shielding gas used in the welding needs to be generated under certain pressure. If a process of self-shielding flux-cored weld is used, the flux-cored wire can produce its own shielding gas, which can meet the needs of optimal weld of stainless steel tubes. Shielded metal arc welding technology is mainly used for the welding of stainless steel tubes, in order to meet the welding needs of different types of stainless steel tubes, which requires a variety of shielding gas.

In the 21st century, new production technology for seamless steel pipe has made the process of making steel pipe faster and more efficient.

Firstly, the cold drawing method can produce seamless steel pipe with high precision and good surface quality. This method is a production process of steel pipe which is mainly used to take small diameter and thick walled seamless steel pipe. In recent years, coupled with the rapid development of isostatic pressing technology and powder metallurgy technology, the product quality and performance level have been greatly improved, which has become one of the important methods in the production of seamless steel pipe.

Secondly, the hot-rolled forming method is a production process which is mainly used to produce small and medium diameter seamless steel pipe. It is mainly used to produce standard and non-standard seamless steel pipe with thicker wall thickness and higher technical requirements.

Finally, the welding method improves the forming and performance of steel pipes, which increases the versatility of steel pipes and is widely used. Welding method is a production process used to make steel pipes with larger diameter and thicker wall thickness. The common welding methods are electric welding, high frequency welding, arc welding and gas welding.

In summary, the new production technologies for seamless steel pipes in the 21st century are cold-drawn processing, hot-rolled forming and welding. With the help of these advanced technologies, seamless steel pipes can be manufactured faster, with better surface quality, higher precision and better performance.