High-pressure seamless hot-finished black steel tube 159x40 is a massive, ultra-thick-walled hollow section engineered for extreme structural and pressure performance. Manufactured from structural Steel 20 (equivalent to European grade P235TR1) through the hot deformation of high-grade solid cylindrical billets, this pipe provides a completely monolithic structure with maximum material density. With a 159 mm outer diameter and an extra-heavy 40.0 mm wall, this pipe acts as a nearly solid starting material with a huge safety factor against internal pressure and rupture.

The product is dual-certified under EN 10216-1 for pressure-bearing engineering systems and EN 10210-2 for load-bearing structural hollow sections (3.1 + CE certified). This size is predominantly used for manufacturing high-pressure hydraulic cylinders, extremely heavy-duty bushings, and primary support nodes for heavy infrastructure like oil rigs or bridge pylons. The seamless construction ensures that material strength remains isotropic, avoiding the stress concentration zones common in welded alternatives. The P235TR1 grade ensures high ductility and reliable weldability, critical for the assembly of heavy-duty engineering networks.

The black surface is suitable for industrial painting or anti-corrosive insulation as per project requirements. We offer prompt self-pickup from regional logistics centers in Europe, Poland, and Bulgaria. Bulk freight delivery is provided for wholesale orders starting from 1 ton. Our metal centers offer professional band-saw cutting services for precise lengths. Contact our engineering support team today for technical documentation and a customized commercial quotation.