... boiler field 2ISO9001-2000 ,first obtained national WNS Horizontal oil(gas)series steam boiler with an international classic three return ,all butt ... threaded tubs and light tube optimized combinztion of horizontal new boiler,fuel gas flow length , good heat transfer.1 All pull ... loss low ,ensuring maximum output and high efficiency .4 Large steam capacity ,ability to adopt to the load change ,output ...