GB 15093-1994 National emblem

GB 15093-2008 National emblem

GB/T 1449-2005 Fibre-reinforced plastic composites—Determination of flexural properties GB/T 1740-2007 Determination of resistance to heat and humidity of paint films GB/T 1766-1995 Paint and varnish—Rating schemes of degradation of coats GB/T 1766-2008 Paints and varnishes—Rating schemes of degradation of coats GB/T 1771-1991 Paints and varnishes—Determination of resistance to neutral salt spray GB/T 1771-2007 Paints and varnishes—Determination of resistance to neutral salt spray(fog) 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 6739-1996 Determination of film hardness by pencil test GB/T 6739-2006 Paints and varnishes—Determination of film hardness by pencil test GB/T 6739-2022 Paints and varnishes—Determination of film hardness by pencil test GB/T 8545-1987 Die forgings of aluminium and aluminium alloy—Dimensional tolerance and machining allowance GB/T 8545-2012 Die forgings of aluminium and aluminium alloy—Dimensional tolerance and machining allowance GB/T 8545-2024 Aluminium alloy forgings GB/T 9274-1988 Paints and varnishes—Determination of resistance to liquids GB/T 9754-1988 Paints and varnishes—Measurement of specular gloss of non-metallic paint films at 20°, 60°and 85° GB/T 9754-2007 Paints and varnishes—Determination of specular gloss of non-metallic paint films at 20°,60°and 85° GB/T 11186.2-1989 Methods for measuring the color of paint films—Part 2:Colour measurement GB/T 11186.3-1989 Methods for measuring the color of paint films—Part 3:Calculation of color differences GB/T 9754-2025 Paints and varnishes—Determination of gloss value at 20°、60° and 85°