rollback tow frame 3d model

Create a realistic rollback tow truck bed subframe weldment made from heavy-duty rectangular steel tubing and welded plate steel. Include dual parallel frame rails, crossmembers, gussets, mounting tabs, hydraulic cylinder mounts, slotted bolt holes, hinge reinforcements, and welded support brackets. CAD-style industrial fabrication with sharp edges, realistic weld seams, accurate proportions, and manufacturable construction. Raw black steel with mild wear and mill scale texture. Hard-surface mechanical engineering aesthetic. No wheels, cab, suspension, or sci-fi elements.