This International Standard lays down diameters of double overlap flexible metal hoses, unpacked, of limited tightness, of circular or polygonal section, in protected carbon steel, and specifies requirements to be verified in accordance with ISO 7658.
This International Standard applies to uncoated flexible metal hoses (without external coating as defined in sub-clause 4.1.10 of ISO 7369) used under low pressure with permissible leakage, at temperatures from -20 to + 600 °C.