Laboratory equipment - Laboratory fittings - Part 4: Valves for pure gases
Edition 2004-11

Metallic materials - Brinell hardness test - Part 4: Table of hardness values (ISO 6506-4:2014); German version EN ISO 6506-4:2014
Edition 2015-02

Thermal insulation and energy economy in buildings - Part 4: Hygrothermal design values
Edition 2020-11

Road and airfield surface characteristics - Test methods - Part 4: Method for measurement of slip/skid resistance of a surface - The pendulum test; German version EN 13036-4:2011
Edition 2011-12

Butt-welding pipe fittings - Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements; German version EN 10253-4:2008
Edition 2008-06

Methods of measurement on receivers for satellite broadcast transmissions in the 12 GHz band - Part 4: Electrical measurements on sound/data decoder units for the digital subcarrier NTSC system; identical with IEC 61079-4:1993
Edition 1994-09

Butt-welding pipe fittings - Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements; German and English version prEN 10253-4:2017
Edition 2017-11

Communication networks and systems for power utility automation - Part 4: System and project management (IEC 61850-4:2011 + A1:2020); German version EN 61850-4:2011 + A1:2020
Edition 2022-05

Batch control - Part 4: Batch production records (IEC 61512-4:2009); German version EN 61512-4:2010
Edition 2011-02

IEC-821-VMEbus - Microprocessor system bus for 1 byte to 4 byte data (IEC 60821:1991, modified); German version EN 60821:1994
Edition 1994-09