F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F05 INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
F05D INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
2230/00 Manufacture
F05D2230/20 essentially without removing material
F05D2230/23 by permanently joining parts together