Owing to the large volume needs of steam in refineries and petrochemicals, a tonne of steam is used to heat crude oil during the distillation phase, thermal cracking, catalytic cracking, hydrocracking, petroleum coking, catalytic reforming, refinery gas production, petroleum product refining, and so on.

Since steam boilers play such an important role in this industry, they are regarded as an indespansable and inextricably linked component.

They are an important source of heat and power in the refinery's manufacturing operation. They are not only used in petrochemical production processes, but also in heating oil and increasing fluidity.