Ok That works with Wings 3D! ;)

(ps when you have such single object put it at the origine and not at the out of space! ;)

But your file has curious colors in some other free prog MeshLab, MeshMixer...

Here the OBJ...http://moiscript.weebly.com/uploads/3/9/3/8/3938813/rohr4.obj



And for this simple object you have better time to redraw it in Moi! ;)
Because 2 Millions polys at Maximum export is maybe not a cool deal! :).



And seems your model has some defaults...