Materials: 201
Standard: ASTM A249,A213
OD:3-75mm
Thickness:0.5-1.5
Tolerance: OD:+/-0.1mm,thickness:+/-0.02mm.length:+/-5mm
Surface: 180#,240#,320# hairline, 400#,600# mirror polish
https://www.stainless-sheets.com/stainless-steel-pipe/200-series-stainless-pipe/201-stainless-steel-seamless-tube.html