"作铺设之用" can be translated as "for laying/installation purposes" or "intended for paving/installation". The choice may depend on the specific context, such as whether it refers to flooring, pipes, cables, or other materials that are laid down.
For example:
This material is for laying purposes. （这种材料是作铺设之用的。）
The product is intended for paving installation. （该产品用于铺设安装。）