Cold drawing deep processing: it is easy to generate friction heat, so the stainless steel pipe with high pressure resistance and heat resistance shall be formed at the same time. After processing, the oil attached to the surface shall be removed.
Welding: rust, oil, moisture, paint, etc. harmful to welding shall be completely removed before welding, and electrodes suitable for steel grade shall be selected. The spot welding time interval is shorter than that of carbon steel. Stainless steel pipe brush shall be used when removing welding slag. After welding, in order to prevent local corrosion or strength reduction, the surface shall be ground or cleaned.
Cutting and stamping: as the strength of stainless steel welded pipe is higher than that of ordinary materials, higher pressure is required for stamping and shearing, and poor shear and work hardening can not occur when the gap between knives is accurate. Plasma or laser cutting is better. When gas cutting or arc cutting has to be used, grinding and necessary heat treatment shall be carried out for the heat affected zone.