Stainless Steel Welded Pipe Grade:201, 202, 301, 304, 304L, 316, 316L Outer Diameter: ... , 12mm, 12.7mm, 13mm, 14.5mm, 15.9mm, 17.2mm, 17mm, 18mm, 19mm, 20mm, 20.2mm, 21mm, 21.3mm, 22mm, 23mm, 24 ... , 60mm, 62mm, 63mm, 63.5mm, 68mm, 70mm, 73mm, 76.2mm, 80mm, 85mm, 88.9mm, 95mm, 101.6mm, 104mm, 108mm, ... , Staircase, Door, Window, Balcony, Fence, Bench, Furniture, etc. Stainless Steel Heat Exchanger Tube