HS Code for Vapour turbines

Vapour turbines with an output not exceeding 40MW are classified under HS code 840682. This classification is based on the mechanical nature of the device, which converts the thermal energy of pressurized steam or other vapours into rotary motion. Heading 8406 is the specific primary heading for steam turbines and other vapour turbines. The sub-heading 840682 is selected based on two criteria: the application (non-marine propulsion) and the power output (not exceeding 40MW). These turbines are essential components in small to medium-scale power generation facilities, industrial co-generation plants, and mechanical drive systems for large pumps or compressors. The classification remains consistent whether the turbine uses water vapour (steam) or other vapours, such as mercury or organic fluids used in Organic Rankine Cycles (ORC), provided the output remains within the specified 40MW limit.

Products Included

• Industrial steam turbines for power generation
• Mercury vapour turbines
• Back-pressure steam turbines
• Condensing steam turbines for industrial drives
• Organic Rankine Cycle (ORC) turbines under 40MW

Common Misclassification

A common misclassification occurs with HS code 840681, which is reserved for turbines with an output exceeding 40MW. Importers must verify the nameplate capacity to distinguish between these two. Additionally, turbines for marine propulsion must be classified under 840610, regardless of their power output. Some users also confuse these with gas turbines, which fall under heading 8411, but gas turbines operate on internal combustion gases rather than external vapour expansion.

FAQ

What is the HS code for vapour turbines?

Vapour turbines for non-marine use with an output of 40MW or less are classified under HS code 840682.

Are steam turbines and vapour turbines the same in the HS system?

Yes, the HS system groups steam turbines and other vapour turbines (like those using organic fluids) under the same heading 8406.