Global Costs For Finished Steel Fabrications.

Does anyone know how I can find average cost per pound comparison for general steel fabrication in various countries? Finished product from steel fabricators.
Looking to find low cost subcontract suppliers for mineral processing equipment fabrication.
We manufacture fabricated and machined machinery products and project work like tanks and structural.

Are there reports, general research or studies out there?

Any ideas or help in the right direction would be most appreciated.

Regards,
Dave Robertson