Pt C, Ch 1, Sec 10 April 2007 Bureau Veritas 139 Table 5 : Conditions of use of metallic materials in piping systems Material Allowable classes Maximum design temperature (1) Particular conditions of use Carbon and carbon-manganese steels III, II, I 400 (2) Class I and II pipes are to be seamless drawn pipes (3) Copper and aluminium brass III, II, I 200 ? Not to be used in fuel oil syst