Stainless Steel Welded Pipe Grade:201, 202, 301, 304, 304L, 316, 316L Outer Diameter: 6mm--219mm ... , 10mm, 11mm, 12mm, 12.7mm, 13mm, 14.5mm, 15.9mm, 17.2mm, 17mm, 18mm, 19mm, 20mm, 20.2mm, 21mm, 21.3mm ... ) ApplicationHandrail, Railing, Staircase, Door, Window, Balcony, Fence, Bench, Furniture, etc. 201, 202, 301, 304, 304L, 316, 316L Stainless Steel Welded Pipe