Stainless steel welded pipe has high strength and excellent corrosion resistance and is widely used in fluid transportation, construction and other general applications. At the same time, stainless steel has a variety of models and grades to choose from. Today, this article will introduce in detail the welding method of 201 stainless steel welded pipe.
- Gas shielded welding:
Mainly refers to TIG welding, argon arc welding and carbon dioxide (CO2) gas shielded welding. TIG welding has a stable arc, uses small current to weld thin parts, and can weld single-sided and double-sided form welding. Therefore, it is widely used in boiler and pressure vessel manufacturing and installation projects. Commonly used for circumferential seam welding of 230 stainless steel welded pipes, cylindrical vessels and pipes in small-diameter boilers. The special rotating mechanism can also be used to automatically weld the welds of boiler and heat exchanger tube plate structures. Melting arc welding is often used to weld thin-walled 201 stainless steel welded pipes and alloy steel containers.
- Electron beam welding:
Has been applied to pressure vessels. This welding method has narrow welding and heat-affected zones, simple connectors, and high production efficiency. It has been practically used in nuclear reactor vessels, boiler drums, deep potential vessels and spherical vessels.
- Narrow gap welding:
In recent years, the narrow gap welding method has been gradually applied to the welding of cylinders and pressure vessels, and has shown its superiority. Narrow gap welded stainless steel pipes have small deformation, narrow heat affected zone, can be welded in all positions, have a high degree of automation, high productivity, and save materials. Narrow gap welding methods are divided into narrow gap fusion arc welding and narrow gap electroslag welding. Welding wire and twisted wire fused gas shielded welding have been used abroad to weld narrow gap welding to boilers, main steam pipelines, chemical equipment, synthesis towers and reactors, etc. And is studying the use of narrow gap argon arc shielded arc welding with rotating arc.
United Steel Industry As the most important steel pipe manufacturer and exporter in China, in the past 20 years, we have completed more than 100 projects, with partners in more than 100 countries, and established relationships with oil and gas and EPC companies in many countries business relationship.
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