... 2,advanced testing equipment. 3,competitive price . Specifications600 series stainless steel tube /bright surface Size:OD:20.34-610MM,W ... Grade:304,321,316,316L,317L,etc600series welded stainless steel tube stainless steel pipe/bright surface1.Type:seamless pipes,welded pipes ... polish4.alloy or stainless steel 5.It can be used to the medical equipment or the fluid pipes. 600 series stainless steel pipe