WNS series gas/oil fired steam boilers from 1 to 20MT/h Specifications: bordersWNS series automatic oil-fired, gas-fired boilers were adopted advanced internationalthree-pass and wet back structure. The ... and high automatic control system. The boilers have the characteristicsof reasonable structure, safely running, high efficiency, energy savingand conveniently operation. Gas/Oil Fired Steam Boiler ...