14/04/2026
Stainless Steel Welded Pipe Manufacturing Process
Stainless steel welded pipes are produced through a precise and highly efficient process designed to ensure their strength, durability, and surface finish.
The entire process begins with stainless steel coils (covering grades such as 201, 304, and 316). These coils first undergo uncoiling, leveling, and slitting operations to be cut into narrow strips. Subsequently, these steel strips pass through a series of rolling mills, undergoing gradual forming to be shaped into a round tubular profile.
The next step is the critical stage: welding. We employ advanced TIG or High-Frequency (HF) welding technologies to create robust and uniform weld seams. Once welded, both the internal and external weld seams undergo specialized treatment to ensure a smooth and flat surface finish—a feature particularly vital for fluid conveyance applications.
Subsequently, the welded pipes undergo sizing and straightening processes to meet strict dimensional tolerance requirements. This is followed by heat treatment (solution annealing), aimed at relieving internal stresses and restoring the material's corrosion resistance properties.
The final stages involve surface finishing (such as pickling or polishing) and comprehensive quality inspection—including eddy current testing and hydrostatic testing. At this point, the welded pipes are cut to length, packaged, and made ready for shipment.
✔ High-Precision Manufacturing
✔ Superior Weld Integrity
✔ Wide Range of Industrial Applications
