ABOUT US About Yongxin Yongxin focuses on the production of stainless steel welded pipes. 113Production Equipment 2Manufacturing Bases 0.6 ~ 10.31Wall Thickness (millimetres) 1/4" ~ 12"Size (inches) 8,000 tonnesInventory 300+Employees 8Engineers 5,000 tonnesMonthly Output Capability Yongxin focuses on the production of stainless steel welded pipes. Welding Annealing Internal Polishing Weld Seam Levelling Pickling Polishing Quality Assurance Yongxin focuses on the production of stainless steel welded pipes. Flattening Test Non-Destructive Test Chemical Analysis Corrosion Test Flanging Test Hydrostatic Test Flaring Test Corrosion Test