Distinctions are made between thick and thin walled models of very high pressure centrifugal blower fans. Thin-walled blower fans have an epoxy coating and can be supplied in ATEX versions as an option. Thick-walled blower fans are produced in various types of steel such as carbon steel Fe360, possibly zinc-plated, AISI 304 and AISI 316 stainless steel and from Corten steel. Ask about the extensive options for your use. The various types have been listed in the table below in order of pressure.