Global Industrial Boilers Market Assessment, By Type [Fire-tube, Water-tube, Others], By Function [Steam, Hot Water], By Fuel [Natural Gas, Oil, Coal, Electric, Others], By Horsepower [10-150 BHP, 151-300 BHP, 301-600 BHP, Above 600 BHP], By End-use Industry [Food and Beverages, Chemicals and Petrochemicals, Metal and Mining, Paper and Pulp, Power Generation, Others], By Region, Opportunities and Forecast, 2017-2031F