High Frequency Welded Spiral Fin Tubes are made of quality grade carbon steel, stainless steel, alloy steel, duplex steel, super duplex steel, inconel to ensure longer functional life. These Spiral Fin Tubes are offered in minimum 26 mm to maximum 168.3 mm outer diameter ranges. These Spiral Fin Tubes are available in a thickness range of 2mm. High Frequency Welded Spiral Fin Tubes come in different specifications to suit specific requirement.