... From the nature, To the excellence NameSquare and rectangular tubesStandardASTM A554, A312, A249, A269 and A270Material ... also accept sizes above 101.6mmThickness0.3mm - 3.5mmLength6m or as customers' request Tolerancea) Outer Diameter: +/- 0.2mmb ... Matt Finish, Brush, Dull Finish)400G, 500G, 600G or 800G Mirror finishApplicationOrnamental tubes, Decoration construction, upholstery, industry ...