Materials in UE4 are stretching on different objects

Development Rendering
1

I’m having a problem with my pipe models where the material is starts of fine at the start of a pipe, but then stretches for the rest of it. And for some pipes the whole material is stretched. Changing the tiling coordinates does not help.

Pipes:

Capture.PNG
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(ignore the attached thumbnails)

2

I think you have wrong UV. Do you know checkers test? Try numbered checkers first and see how it looks.

3

Like TDoro said, you haven’t unwrapped them properly in your 3d application.