Based on the image you sent, here is a description for the industrial steel columns that you can upload on CG Trader:
High-Quality Industrial Steel Columns
This pack includes detailed 3D models of industrial steel columns, perfect for adding a realistic touch to your architectural visualizations, industrial scenes, or any project requiring a strong structural element.
3DM (Rhinoceros 3D, filesize: 2.58 MB), OBJ (OBJ, filesize: 9.23 MB), FBX (Autodesk FBX, filesize: 3.99 MB), OTHER (Other, filesize: 2 MB), 3DS (3D Studio, filesize: 1.86 MB), SKP (Sketchup, filesize: 1.75 MB), STL (Stereolithography, filesize: 12.4 MB)