Mesh Resolution Problem

Hi guys. I have 3d android game and it uses mesh system to create hollow tube . other object looks fine at any distance but far meshes of tube have resolution problem . it looks like there is a blur on it (I have attached screenshot).How can i fix this problem ?Thanks for any help

Those are mipmaps.
If you open the texture inspector on the tube’s texture. you can disable “Generate mipmaps”.
if you experience aliasing, you can also choose trilinear filtering