1.0.5-20t/h capacity 2.<2.5Mpa pressure 3.Three pass structure (fire tube) 4.Certificate: ISO:9001:2008,ASME "S" Industrial gas fired steam boilerFactory selling boilerWNS series --- the best gas fired boiler!High efficient heat transfer, sufficient burning with brand burner, environment protection,stable operation.1. Latest International technology for big volume combustion room design to ...