Seamless tubes are cylindrical hollow structures made without any welded joints. They are manufactured using a billet piercing and extrusion process, ensuring uniformity in strength and structure. These tubes offer high resistance to pressure, corrosion, and mechanical stress, making them ideal for critical applications in industries such as oil & gas, automotive, and power generation.

The primary difference lies in their manufacturing process. Seamless tubes are made without welding, offering higher strength, uniformity, and resistance to internal and external pressures. Welded tubes, on the other hand, are formed by rolling and welding a flat sheet, which may create weak points at the welded seam, making them less suitable for high-pressure applications.

Seamless tubes have superior strength, excellent pressure resistance, and better corrosion resistance compared to welded tubes. Their uniform structure ensures higher durability and performance under extreme conditions, reducing the risk of failure. They are also preferred for applications requiring precision, such as hydraulic and boiler systems.

Seamless tubes are commonly made from carbon steel, stainless steel, alloy steel, and non-ferrous materials such as copper and titanium. The choice of material depends on the intended application, environmental conditions, and specific mechanical and chemical requirements.