Instruction:

To right setup of node connect :

1. In your scene File -> Append (shift+F1) -> Select “Metal_Bronze_CGW.blend”->
   1. Material -> “Metal_Bronze_CGW” to load already setup material;
   2. NodeTree - to add only steel node, if you want add it in your material. After that you can add node: Node Editor -> Add -> Group -> Metal_Bronze;
2. Connect Texture Coordinate node (Object) to mapping sockets in Bronze shader;
3. Connect outputs to appropriate Material output sockets.

To conrtoll of Global scaling of material, use node Mapping (Add -> Vector -> Mapping)

Enjoy!