High-frequency (HF) welded fin tubes - tube diameter, mm: 16-114 - fin height, mm: 8-25 - fin thickness, mm: 0.8-2.0 - pitch, mm: 4.5+ - material: carbon steel, alloy steel - maximum tube length, mm: 12000 Application: waste heat boilers, heat recovery steam generators, heat exchangers, air and gas coolers, oil coolers, radiators, refrigerators, condensing units, heaters, economizers, baking furnaces, etc.