Steel plant furnace (Polygon mesh 3D model) is available on CGTrader for $12. Original author: LAZEGE. Specs: 488689 polys, 566387 verts.
OBJ (OBJ, filesize: 83.3 MB), TEXTURES (Textures, filesize: 3.35 MB), JPG (JPG, filesize: 3.35 MB), MAX (Autodesk 3ds Max, filesize: 70.7 MB), FBX (Autodesk FBX, filesize: 95 MB)