ABOUT US About Yongxin Yongxin focuses on the production of stainless steel welded pipes. 113Production Equipments 2Manufacturing Bases 0.6 ~ 10.31Wall Thickness (Mm) 1/4" ~ 12"Inch 8000 T TonsInventory 300+Employee 8Engineers 5000 T TonsMonthly Output Capability Yongxin focuses on the production of stainless steel welded pipes. Welding Annealing Internal Polishing Welded Seam Levelling pickling Polishing Quality Assurance Yongxin focuses on the production of stainless steel welded pipes. Flattening Test Non Destructive Test Chemicalanalysis Corrosion Test Flanging Test Hydrostatic Test Flaring Test Corrosion Test