Stainless Steel Welded Pipe Grade:201, 202, 301, 304, 304L, 316, ... 12.7mm, 13mm, 14.5mm, 15.9mm, 17.2mm, 17mm, 18mm, 19mm, 20mm, 20.2mm, 21mm, 21.3mm, 22mm, 23mm, ... Grit, 500Grit, 600 Grit, Hairline, 2B.7) Packing: Every tube is sleeved in plastic bag individually, and several tubes are ... , Railing, Staircase, Door, Window, Balcony, Fence, Bench, Furniture, etc. Stainless Steel Heat Exchanger Tube