GB/T 17889.2-2021 Ladders—Part 2:Requirements,test,marking

GB/T 17889.1-2021 Ladders—Part 1:Terms,types,functional sizes

GB/T 17889.2-2012 Ladders—Part 2:Requirements,test,marking

GB/T 16422.2-2014 Plastics—Methods of exposure to laboratory light sources—Part 2:Xenon-arc sources GB/T 17889.1-2021 Ladders—Part 1:Terms,types,functional sizes ISO 14125 GB/T 228.1-2010 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 228.1-2021 Metallic materials—Tensile testing—Part 1:Method of test at room temperature 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 1043.1-2008 Plastics—Determination of charpy impact properties—Part 1:Non-instrumented impact test GB/T 3854-1983 Test method for hardness of fiber reinforced plastics by means of a Barcol impressor GB/T 3854-2005 Test method for hardness of reinforced plastics by means of a Barcol impresser GB/T 3854-2017 Test method for hardness of reinforced plasticsby means of a Barcol impresser GB/T 12467.1-1998 Quality requirements for welding—Fusion welding of metallic materials—Part 1:Guidelines for selection and use GB/T 12467.1-2009 Quality requirements for fusion welding of metallic materials—Part 1:Criteria for the selection of the appropriate level of quality requirements GB/T 12467.2-1998 Quality requirements for welding—Fusion welding of metallic materials—Part 2:Comprehensive quality requirements GB/T 12467.2-2009 Quality requirements for fusion welding of metallic materials—Part 2:Comprehensive quality requirements GB/T 12467.3-1998 Quality requirements for welding—Fusion welding of metallic materials—Part 3:Standards quality requirements GB/T 12467.3-2009 Quality requirements for fusion welding of metallic materials—Part 3:Standard quality requirements GB/T 12467.4-1998 Quality requirements for welding—Fusion welding of metallic materials—Part 4:Elementary quality requirements GB/T 12467.4-2009 Quality requirements for fusion welding of metallic materials—Part 4:Elementary quality requirements GB/T 17889.3-2012 Ladders—Part 3:User instructions GB/T 19419-2003 Welding coordination—Tasks and responsibilities GB/T 17889.3-2024 Ladders—Part 3:Information for use GB/T 1040.1-2025 Plastics—Determination of tensile properties—Part 1:General principles