201/301/304 stainless steel square tube standard ASTM A554 Polished,Hariline and Satin GradeMechanical ... decoration,shipbuilding,military use,chemical,automobile exhaust tube and furniture. stainless steel square tube 201stainless steel pipe/tube OD:9.5mm,12.7mm,15.9mm ... ,114mm,129mm,133mm,141mm,159mm,168mm,219mmThickness: 0.26-4.0 mmLength: 3000mm~6000mm,or according to customer requestTolerance: ...