Plastics - Polytetrafluoroethylene (PTFE) semi-finished products - Part 1: Requirements and designation (ISO 13000-1:1997); German version EN ISO 13000-1:1997— 8 стр.
Plastics - Polytetrafluoroethylene (PTFE) semi-finished products - Part 2: Preparation of test specimens and determination of properties (ISO 13000-2:1997); German version EN ISO 13000-2:1997— 10 стр.