GB/T 17955-2009 Spherical bearings for bridges

GB/T 17955-2000 Technical requirements for spherical bearings

GJB 3026 TB/T 1527 GB/T 699-1999 Quality carbon structural steels GB/T 699-2015 Quality carbon structure steels GB/T 700-1988 Carbon structural steels GB/T 700-2006 Carbon structural steels GB/T 985.1-2008 Recommended joint preparation for gas welding,manual metal arc welding,gas-shield arc welding and beam welding GB/T 1033.1-2008 Plastics—Methods for determining the density of non-cellular plastics—Part 1:Immersion method,liquid pyknometer method and titration method GB/T 1040.1-2006 Plastics—Determination of tensile properties—Part 1:General principles GB/T 1040.1-2018 Plastics—Determination of tensile properties—Part 1:General principles GB/T 1040.2-2006 Plastics—Determination of tensile properties—Part 2:Test conditions for moulding and extrusion plastics GB/T 1040.2-2022 Plastics—Determination of tensile properties—Part 2:Test conditions for moulding and extrusion plastics GB/T 1040.3-2006 Plastics—Determination of tensile properties—Part 3:Test conditions for films and sheets GB/T 1040.4-2006 Plastics—Determination of tensile properties—Part 4:Test conditions for isotropic and orthotropic fibre-reinforced plastic composites GB/T 1040.5-2008 Plastics—Determination of tensile properties—Part 5:Test conditions for unidirectional fibre-reinforced plastic composites GB/T 1184-1996 Geometrical tolerancing—Geometrical tolerance for features without individual tolerance indications GB/T 1804-2000 General tolerances for linear and angular dimensions without individual tolerance indications GB/T 3280-1992 Cold rolled stainless steel sheets and plates GB/T 3280-2007 Cold rolled stainless steel plate, sheet and strip GB/T 3280-2015 Cold rolled stainless steel plate, sheet and strip GB/T 3398.1-2008 Plastics—Determination of hardness—Part 1:Ball indentation method GB/T 4956-2003 Non-magnetic coatings on magnetic substrates—Measurement of coating thickness-Magnetic method GB/T 7233-1987 Methods for ultrasonic testing and for specifying quality levels of steel castings GB/T 7233.1-2009 Steel castings—Ultrasonic examination—Part 1:Steel castings for general purposes GB/T 7233.1-2023 Steel castings—Ultrasonic testing—Part 1:Steel castings for general purposes GB/T 7233.2-2010 Steel castings—Ultrasonic examination—Part 2:Steel castings for highly stressed components GB/T 7233.2-2023 Steel castings—Ultrasonic testing—Part 2:Steel castings for highly stressed components GB/T 7760-2003 Rubber, vulcanized or thermoplastic—Determination of adhesion to a rigid substrate-90 degrees peel method GB/T 11352-1989 Carbon steel castings for general engineering purposes GB/T 11352-2009 Carbon steel castings for general engineering purpose GB/T 11379-1989 Metallic coatings—Electroplated coatings of chromium for engineering purposes GB/T 11379-2008 Metallic coatings—Electroplated coatings of chromium for engineering purposes HG/T 2502-1993 5201 grease JB/T 5943-2018 Engineering Machinery Welding Components General Technical Specification JB/T 5943-1991 General technical specification for welding parts of construction machinery GB/T 1040.1-2025 Plastics—Determination of tensile properties—Part 1:General principles GB/T 4956-2025 Non-magnetic coatings on magnetic substrates—Measurement of coating thickness—Magnetic method