Seamless steel tubes are cylindrical hollow structures manufactured without any welded seams. They are produced by extruding or piercing a solid billet to form a hollow tube, which is then further processed to achieve the desired dimensions, mechanical properties, and surface finish. Seamless tubes are widely used in industries such as oil and gas, automotive, aerospace, power generation, and construction due to their superior strength, durability, and ability to withstand high pressure and temperature.