Unreal Marketplace: https://www.unrealengine.com/marketplace/en-US/product/modular-pipes-pack
Unity Asset Store: https://assetstore.unity.com/packages/3d/props/industrial/modular-pipes-vent-pack-175045
A set of modular pipes with different texture options. The kit includes modular piping elements, with which you can create a pipeline of any complexity. There are mounts on the ceiling, and a bonus in the package added square and large thick pipes.
The package has several variations of materials, you can select and change the color by changing the material of the model to one of the available. And also to all pipes it is possible to apply any seamless material of metal which you have.