Stainless steel pipes: (1)Model Number: 202,201,304,430 Etc. (2)Thickness: 0.5-22 mm (3)Outer ... , DIN, ENPlace of Origin: Tianjin China (Mainland)Model Number: 202,201,304,430 Etc.Certification: ISOThickness: 0.5-22 mmOuter Diameter: 9 ... .Hardness 4.Easy maintenanceMaterials: TP304,TP304L,TP310S,TP316L TP321 TP202h/201/430/410 Finish: 2B polish,colour,and so on OD ...