[Class : 6] Tanks Of Metal; Containers Of Metal For Compressed Gas Or Liquid Air; Containers Of Metal [Storage, Transport]; Structures Of Metal For Building; Pipes And Tubes Of Metal; Small Items Of Metal Hardware.[Class : 7] Expansion Tanks [Parts Of Machines]; Machines For Generating Gas By Electrolysis; Blowing Machines For The Compression, Exhaustion And Transport Of Gas...