Generally, there are stainless steel round tube wall thickness: 0.4 ~ 12mm, outer diameter: 6mm ~ 600mm, of which φ16mm ~ 76mm can produce two flower to full flower flower tube; Foshan stainless steel square tube wall thickness: 0.4 ~ 4.0mm, outer diameter: 12 × 12 ～163×163mm; Foshan stainless steel rectangular tube wall thickness: 0.4～4.0mm, outer diameter: 20×10～120×60mm; Foshan stainless steel fan-shaped tube wall thickness: 0.7～1.0mm, outer diameter: R16～R19; Foshan stainless steel oval Tube: 80×40～92×58; it is also the main stainless steel welded pipe for fluid transportation.