... : 0.1mm---3.8mm Items: Round Pipe, Square Pipe, Rectangular Pipe, Embossed Pipe, Threaded Pipe, Oval Pipe, Special-shaped Pipe, FittingFeature:1) Round PipeOuter Diameter: 6mm ... Every tube is sleeved in plastic bag individually, and several tubes are packed to be bundle without any logo.8) Application ... Staircase, Door, Window, Balcony, Fence, Bench, Furniture, etc. Stainless Steel Boiler Exhaust Pipe