This European Standard is a product standard which specifies the performance requirements of cylindrical steel fabrications for use in single wall steel chimneys and steel liners for free-standing chimneys used to convey the flue gas from appliances to the outside atmosphere. It specifies also the requirements for insulation and cladding being part of the single wall steel chimney and liner, it provides for the evaluation of conformity of steel chimney/liners to this EN. It is essential that the steel chimneys/steel chimney products manufactured in accordance with this European Standard comply with the requirements given in EN 13084-1 and ENV 1993-3-2.