F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F17 STORING OR DISTRIBUTING GASES OR LIQUIDS
F17C VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
2209/00 Vessel construction, in particular methods of manufacturing
F17C2209/21 Shaping processes