Dual phase stainless steel SAF2205 welding process development

And the new hydrogenation reactor Steels: development of 2.25Cr-1Mo-Vsteel welding process

120mm ultra wide surfacing technology development of stainless steel band

And hydrogenation reactor buried arc welding process of 256mm super thickpractice using 2.25Cr-1Mo technology for steel

Thick wall vessel nozzle automatic welding research

316L stainless steel strip surfacing technology development

90 degrees of inner wall of elbow whole surfacing technology

Thick wall vessel saddle automatic welding technology