Low-pressure steam refers to steam with a pressure below 2.5 MPa and a temperature not exceeding 400 °C. This dataset includes major raw and auxiliary materials, energy consumption, atmospheric emissions, and waste from the production process; infrastructure such as production equipment and facility construction are not included within the system boundary of the dataset. The life cycle inventory is compiled from data collected from multiple sources. The production process for activated coke includes procedures such as heat supply, coal blending, grinding, mixing and kneading, carbonization, activation, and finished product packaging and screening. Low-pressure steam is a by-product of this process.