Material: stainless steel 201,304,321,316l,310s,904,403,420,430,440,347 Size(round pipe): 9.5, 12.7, 15.9, 17, 18, 19.1, 20, 21, 22.2, 23, 25.4, 28, 318, 35, 60, 63.5, 73, 76.2, 88.9, 101.6, 114.3, 127, 133, 159, 168, 219 mm or customized Size (square pipe): 10Ã?10,12Ã?12,18Ã?18,23Ã?23,38Ã?38,50Ã?50,70Ã?70,100Ã?100,20Ã?10,23Ã?10,24Ã?12,25Ã?13,36Ã?23,40Ã?20,50Ã?20,60Ã?15,75Ã?45,80Ã?60,95Ã?45,100Ã?60,150Ã?100 mm or customized Thickness: 0.24-3 mm Length: 6m or according to customer's request Outer diameter: 8-219mm Tolerance: Outer diameter :±0.2mm Thickness :±0.02mm Length :±0.5mm Process method: Code drawn, annealed with nitrogen protection, ultrasonic,automatic shape, polished Finishing: A: sanded B: 400#-600# mirror C: hairline brushed D: TIN titanlum E : HL brushed & mirror (two kinds of finishing for one pipe)