According to the national standard information public service platform, five national standards have been abolished on April 2, 2020. Details are as follows:

Ductile iron pipes, fittings and accessories for water and gas
Standard number: GB/T 13295-2013Implementation date: 2014-09-01Date of abolition: 2020-04-02All substitution standard: GB/T 13295-2008Chinese Standard Classification Number: H48Focal unit: National Steel Standardization Technical CommitteeExecutive unit: National Steel Standardization Technical CommitteeCompetent authority: China Iron and Steel AssociationReplaced entirely by GB/T 13295-2019
Plastics Determination of load deflection temperature Part 2: Plastics, ebonite and long fiber reinforced composites
Standard number: GB/T 1634.2-2004Date of implementation: 2004-12-01Date of abolition: 2020-04-02Partial substitution standard: GB/T 1634-1979,Chinese standard classification number: G31Focal unit: National Plastics Standardization Technical CommitteeExecutive unit: National Plastics Standardization Technical CommitteeCompetent authority: China Petroleum and Chemical Industry FederationReplaced entirely by GB/T 1634.2-2019 GB/T 1634.2-2019
Preparation of Injection Molded Specimens for Thermoplastic Materials Part 1: General Principles and Preparation of Multipurpose Specimens and Long Specimens
Standard number: GB/T 17037.1-1997Date of implementation: 1998-04-01Date of abolition: 2020-04-02Chinese standard classification number: G31Focal unit: National Plastics Standardization Technical CommitteeExecutive unit: National Plastics Standardization Technical CommitteeCompetent authority: China Petroleum and Chemical Industry FederationReplaced entirely by GB/T 17037.1-2019 GB/T 17037.1-2019
Plastics Determination of load deflection temperature Part 1: General test methods
Standard number: GB/T 1634.1-2004Date of implementation: 2004-12-01Date of abolition: 2020-04-02Partial substitution standard: GB/T 1634-1979,Chinese standard classification number: G31Focal unit: National Plastics Standardization Technical CommitteeExecutive unit: National Plastics Standardization Technical CommitteeCompetent authority: China Petroleum and Chemical Industry FederationReplaced entirely by GB/T 1634.1-2019 GB/T 1634.1-2019
Fire hydrant box
Standard number: GB/T 14561-2003Date of implementation: 2004-05-01Date of abolition: 2020-04-02All in lieu of standard: GB 14561-1993Chinese Standard Classification Number: C80Focal unit: National Fire Standardization Technical CommitteeExecutive unit: National Fire Standardization Technical CommitteeCompetent authority: Ministry of Emergency ManagementReplaced entirely by GB/T 14561-2019 GB/T 14561-2019