Natraj Packaging Pvt. Ltd. Manufactures Parallel Paper Tube. Natraj Packaging Pvt. Ltd. Also manufactures a wide range of high quality paper tubes, cans, cores and fibre drums. Parallel Paper Tube is offered with 4 mm to 25 mm inner diameter. It has 0.5 mm to 3 mm wall thickness. It is manufactured using state-of-the-art technology. It is available in different sizes. These tubes are used in automobile industry for masking purpose.