Hoʻokumu ʻia nā cylinders kiʻekiʻe kiʻekiʻe ZX alloy steel ma lalo o ISO 9809-1 maʻamau, me ka ʻae TPED. ʻO kā mākou mau pahu pahu alakaʻi ʻoihana he māmā ke kaumaha a makemake ʻia e nā mea hoʻolaha kinoea ma ka honua. Hoʻohana nui ʻia kā mākou mau pahu kila a puni ka honua ma nā ʻano ʻano like ʻole me ka wili, oxygen lāʻau lapaʻau, ʻenehana meaʻai a me nā mea inu, nā lako pale ahi, ka luʻu scuba a me nā noi mālama wai.