I have been working on a financial model for sometime on an Indian company called tata metaliks.

It is a producer of pig iron and DI pipes. I am unable to forecast the revenue figures. There is no management forecasts in recent ARs for revenue. Also I do not have a steady past growth rate for both the segments due to external factors. Please suggest how should I forecast them . 

Also even If i get the numbers, they are sure to exceed the capacity for production. And yes, management had not given any sort of capex plans too.