1.Grade: 301,304,304L,316, etc. 2.Standard of our product: ASTM, AITI, JIS, GB 3.Wall Thickness: From 0.3 mm 4.Best Price Specifications of Stainless Steel Rectangular/Flat Pipe: Product Name:Stainless Steel Rectangular/Flat PipeStandard:GB, ASTM, JIS, DINGrade:201, 202, 301, 304, 304L, 304N, 310, 316, 316L, 321, 409L, 410, 430, 439L, 904L, etcOutside Diameter: 20*10mm—100*80mmWall Thickness: 0. ...