Heat treatment of ferrous metals - (WBA) Forms - Heat-treatment order
Edition 2000-03

Treatment of spent filter backwash water from systems for treatment of water of swimming-pools and baths
Edition 2016-07

Heat treatment of ferrous materials; notation to indicate heat treatment processes
Edition 1976-05

Heat treatment of ferrous materials - Heat treatment methods - Part 3: Case hardening
Edition 2025-11

Heat treatment of ferrous materials - Methods of heat treatment - Part 5: Surface hardening
Edition 2000-03

Heat treatment of ferrous materials - Methods of heat treatment - Part 4: Nitriding and nitrocarburizing
Edition 1998-01

Heat treatment of ferrous materials; heat treatment methods; hardening and tempering of tools
Edition 1986-06

Heat treatment furnaces - Part 2: Requirements for the uniformity of the result after heat treatment
Edition 2018-08

Wastewater treatment plants - Part 13: Chemical treatment - Treatment of wastewater by precipitation/flocculation; German and English version prEN 12255-13:2021
Edition 2021-07

Wastewater treatment plants - Part 13: Chemical treatment; Treatment of wastewater by precipitation/flocculation; German version EN 12255-13:2002
Edition 2003-04