Subheading 840610: Turbines; Steam and other Vapour Turbines, for Marine Propuls … etc.
Subheading 840681: Turbines; Steam and other Vapour Turbines, (for other than Ma … etc.
Subheading 840682: Turbines; Steam and other Vapour Turbines, (for other than Ma … etc.
Subheading 840690: Turbines; Parts of Steam and other Vapour Turbines