201/301/304 stainless steel square tube standard ASTM A554 Polished,Hariline and Satin GradeMechanical PropertiesTensile StrengthYied ... ,102mm,114mm,129mm,133mm,141mm,159mm,168mm,219mmThickness: 0.25-3.0 mmLength: 3000mm~6000mm,or according to customer requestTolerance:OD ... quality, widely used in architectural decoration, furniture, etc AISI201 stainless steel square tube