... the Construction and classification of Sea-going steel ships.air blower,Volume:1200m3/h~138000m3/h,Pressure:230Pa~1220Pa ... explosives, for ordinary air, for sea air containing salt fog, for air containing oil fog and other corrupt air supply or extracition. ... containing combustibles and explosives in oil cabins holds, pump-rooms, battery cabins, ammunition cabins, hangars, paint houses, etc . They ...