Calor-repugnans ferro applicabiles ad environment

The earliest material used in the boiler and heating furnace is low carbon steel, the temperature used is generally about 200℃, the pressure is only 0.8MPa. Until the boiler steel, such as 20g, the working temperature shall not exceed 450℃and the working pressure shall not exceed 6MPa. With the continuous increase of the use temperature of various power plants, the working pressure increases rapidly, the use temperature of Moderni æstus resistentibus ferro fuit ut princeps ut DCC gradus, in usum environment plus complexu et durus {{{}} usum temperatus range et calor-repugnans ferro est a paucis MCCC ad dozens et opus est a paucis MCCC, et operantes est a paucis mpa ad dozens et opus est a paucis mpa ad dozens et opus est a mpa est a mpazens est a mpa. Et operantes environment habet developed ex simplex oxidatio atmosphaera ad sulfide atmosphaera, mixta atmosphaera et magis universa environment ut conflatile sal et liquida metallum