Stainless Steel Welded Pipe Grade:201, 202, 301, 304, 304L, 316, 316L ... , Special-shaped Pipe, FittingFeature:1) Round PipeOuter Diameter: 6mm, 8mm, 9.5mm, 10mm, 11mm, 12mm, 12.7mm, 13mm, 14.5mm, 15 ... : Handrail, Railing, Staircase, Door, Window, Balcony, Fence, Bench, Furniture, etc. Stainless Steel Heat Exchanger Tube