Engineering Applications

We provide tubes with excellent mechanical properties and very good weldability.

Increased load capacity with high-strength steel tubes

Tenaris supplies a large dimensional range of seamless tubes for engineering applications where the critical factors are weight control and high stress resistance. Our structural tubes are used, for example, in lifting and load handling systems and as components of lift arms (batten and tower mast) in mobile cranes.

For these applications, high-performance steels (fine-grain and high-strength steels) with excellent strength resistance and resilience values are used, which means that the stress resistance of the systems can be increased, thus also guaranteeing their use in extreme environmental conditions.

Furthermore, the chemical composition of our seamless steel tubes is carefully controlled in order to guarantee good weldability, a fundamental issue for structures made of tubular components welded together. High-strength seamless steel tubes are also used in steel constructions for civil engineering purposes where the relationship between mass and space occupied is especially critical.

Steel Grades and Dimensional Range

For this application, our seamless carbon-manganese-molybdenum (e.g., S460, S590, S690, S770 and S890) steel tubes are supplied in hot-rolled and quenched and tempered conditions, in a wide range of sizes:

• S460 and S590: outer diameter from 48.3 mm to 508 mm and wall thickness from 4 mm to 32 mm
• S690 and S770: outer diameter from 48.3 mm to 508 mm and wall thickness from 4 mm to 25 mm
• S890: outer diameter from 139.7 mm to 508 mm and wall thickness from 10 mm to 25 mm