High-strength seamless black steel tube 159x6 is a versatile circular hollow section engineered for industrial frameworks and medium-pressure distribution. Manufactured from high-grade structural steel of grade C35E, E355 (Steel 35 equivalent), this pipe is produced via hot deformation of solid steel billets, ensuring a completely weldless and monolithic structure. With an outer diameter of 159 mm and a standard 6.0 mm wall, it offers an excellent strength-to-weight ratio for optimized construction designs.

Certified under EN 10216-1 and EN 10210-2 (3.1 + CE), it meets rigorous European quality requirements for both structural and pressure applications. The seamless manufacturing technology eliminates weak points associated with longitudinal welds, preventing rupture during pressure spikes or dynamic vibrations. The Steel 35 grade provides higher mechanical properties compared to mild steel while maintaining good weldability. This profile is ideal for regional heating networks, industrial compressed air lines, and load-bearing metal structures in civil construction where reliability is paramount.

The untreated black surface allows for project-specific industrial coatings or anti-corrosive painting after assembly. Available for self-pickup from logistics hubs in Poland and Bulgaria. Wholesale discounts apply for orders starting from 1 ton. Our metal centers provide professional high-precision band-saw cutting to your required lengths. Contact our sales team today for an individual commercial offer and technical assistance regarding this high-quality seamless profile.