Fire detection and fire alarm systems - Part 20: Aspirating smoke detectors
Edition 2006-09

Fire detection and fire alarm systems - Part 20: Aspirating smoke detectors; Corrigendum AC
Edition 2009-02

Safety rules for the construction and installation of lifts - Lifts for the transport of persons and goods - Part 20: Passenger and goods passenger lifts
Edition 2020

Methods of test for masonry units - Part 20: Determination of flatness of faces of aggregate concrete, manufactured stone and natural stone masonry units
Edition 2000-09

Methods of test for masonry units - Part 20: Determination of flatness of faces of masonry units
Edition 2005-09

Copper and copper alloys - Plumbing fittings - Part 20: Definitions, thread dimensions, test methods, reference data and supporting information
Edition 2021-07

Aerospace series - Steel FE-PL1502 (25CrMo4) - 900 MPa ≤ Rm ≤ 1100 MPa - Sheets, strips and plates - 0,5 mm ≤ a ≤ 20 mm
Edition 2010-12

Aerospace series - Steel FE-PA3901 (X2CrNi18-9) - Air melted - Softened - Plate, sheet and strip - 0,4 mm ≤ a ≤ 20 mm - 520 MPa ≤ Rₘ ≤ 670 MPa
Edition 2008-02

Aerospace series - Circuit breakers, three-pole, temperature compensated, rated currents 20 A to 50 A - Part 001: Technical specification
Edition 2023-11

Aerospace series - Circuit breakers, three-pole, temperature compensated, rated current 20 A to 50 A - Part 004: UNC thread terminals - Product standard
Edition 2014-04