Hot-finished seamless black steel tube 146x20 is a heavy-walled industrial hollow section manufactured from high-grade carbon steel 45 (C45E). This monolithic product is produced by hot deformation of solid cylindrical steel billets, ensuring a completely weldless structure with uniform material density. With an outer diameter of 146 mm and an impressive 20.0 mm wall, this pipe is designed to withstand massive mechanical stresses and high-torque loads.

The absence of a longitudinal seam eliminates risks of rupture under internal pressure and provides absolute structural integrity. Certified under DSTU 8938 and functional analogues of EN 10216/EN 10210, it is a premium choice for the mechanical engineering and machine tool industries. The high carbon content in Steel 45 allows for thermal treatment to achieve superior surface hardness. This size is ideal for manufacturing heavy-duty bushings, shafts, and hydraulic components where deep machining is required without compromising strength.

Its black, untreated surface is perfect for components that will undergo further heat treatment or welding into complex industrial frames. The seamless technology ensures that the material behaves predictably during cooling and expansion cycles. We offer this product for self-pickup from our European logistics centers in Poland and Bulgaria. Wholesale terms are available for orders starting from 1 ton. Our service centers provide high-precision band-saw cutting to your exact specifications. Contact our technical team for project-specific calculations and a detailed commercial offer for this heavy-duty profile.