High-carbon seamless hot-finished black steel tube 159x20 is an exceptionally robust hollow section engineered for industrial durability and structural strength. Manufactured from premium carbon steel grade 45 (C45E) through the hot rolling of solid cylindrical billets, this pipe provides a monolithic, weldless body with high uniform density. With an outer diameter of 159 mm and a reinforced 20.0 mm wall, it is designed to handle extreme mechanical stresses and high-torque operational loads.

The product is certified under EN 10216-1 for high-pressure systems and EN 10210-2 for hot-finished structural hollow sections (3.1 + CE certified). Due to the high carbon content in Steel 45, this pipe offers significant surface hardness and mechanical toughness. It is widely used as a high-quality billet in the machinery sector for producing heavy rings, rollers, bushings, and shafts that require deep machining. The seamless construction ensures that the material behaves predictably during thermal treatment and avoids any risks associated with weld joint failure.

The black surface is suitable for industrial painting or specialized anti-corrosive treatments. We offer prompt self-pickup from our regional logistics centers in Europe, Poland, and Bulgaria. Bulk delivery is provided for wholesale orders starting from 1 ton. Our metal service centers offer high-precision band-saw cutting to provide pieces of exact lengths. Contact our sales department for detailed technical support and an individual commercial quotation.