Pipework — Double overlap flexible metal hoses (copper packing, limited tightness, circular section, in protected carbon steel)

Specifies diameters of hoses and given requirements to be verified in accordance with ISO 7658. Applies to uncoated hoses used under low pressure with permissible leakage, at temperatures from -20 to +600 C. A figure illustrates the meaning of the text. Gives an example of designation. The table includes nominal sizes from DN 12 up to and including DN 500.