Cylinders compliant with ISO 15552 standards in AISI 304 or 316 stainless steel; heads (only) can be supplied on request in acetalic resin or anodised aluminium. The 100% stainless steel version is suitable for use in chemical, food and pharmaceutical applications, while the other versions are suitable for use in moderately or slightly aggressive environments, where periodic cleaning or sanitisation of the work environment is required.