The standard valid for holloware for to cook consist from enamelled steel, aluminium and stainless steel. The standard include dimensions of diameter in regard of plates of cooking surfaces, requirements to protection of burning and flexion of the bottom.
DIN 44904:1989 history
2005DIN EN 12983-1:2005 Cookware - Domestic cookware for use on top of a stove, cooker or hob - Part 1: General requirements; German version EN 12983-1:2000 + A1:2004
1970DIN EN 12983-1:2000 Paints and varnishes - Coating materials and coating systems for exterior wood - Part 13: Assessment of resistance to impact of a coating on a wooden substrate
1989DIN 44904:1989 Holloware for electric cookers; dimensions, requirements and testing