One set 20ton gas boiler for new factory expansion In Nigeria, for foods & beverage production factory. 

Pictures Show: 20ton/h gas fired boiler 

Specification: WNS fire tube gas boiler, automatic three pass design boiler, wet back structure boiler. Available boiler capacity in 0.5-20tons. Its working pressure in 0.1Mpa-3.8Mpa, 1bar-38bar. 

Other recommend: 

1> if you need one small 100kg-2000kg gas boiler, you can choose from vertical gas boiler and horizontal gas boiler.

2> 20ton-50ton gas fired boiler, suggest SZS water tube boiler, double drums D type furnace boiler.