This code is applicable to the design of industrial, civil and regional boiler rooms and outdoor heat pipes in the following ranges: 1. For boiler rooms using water as the medium steam boiler, the rated evaporation capacity of the boiler is 1 65t/h, and the rated output Vl steam pressure The gauge pressure is 0.1~3.82MPa, and the rated outlet steam temperature is less than or equal to 450C;