GB/T 42850-2023 1275 MPa MJ thread bolt

ISO 3353-1 ISO 5855-2 ISO 7913 GB/T 90.2-2002 Fasteners—Marking and packaging 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 230.1-2004 Metallic Rockwell hardness test—Part1:Test method(scales A、B、C、D、E、F、G、H、K、N、T) GB/T 230.1-2009 Metallic materials—Rockwell hardness test—Part 1:Test method(scales A、B、C、D、E、F、G、H、K、N、T) GB/T 230.1-2018 Metallic materials—Rockwell hardness test—Part 1:Test method GB 5749-1985 Sanitary standard for drinking water GB 5749-2006 Standards for drinking water quality GB 5749-2022 Standards for drinking water quality GB/T 6394-2002 Metal-methods for estimating the average grain size GB/T 6394-2017 Determination of estimating the average grain size of metal GB/T 13911-1992 Expression methods for metallic coating and chemical treatment GB/T 13911-2008 Designation for metallic coating and chemical treatment HB/Z 83-1984 Stainless steel pickling and passivation treatment process HB 5800-1999 General tolerance HB 5800-1982 General tolerance HB 5936-2011 Marking of Parts and assemble HB 5936-1986 Component Marking HB 6702-1993 WZ8 Series GH4169 Alloy Bars and Tubes