JB/T 6887-2004 Technical condition of cast iron for fans blower and compressors

JB/T 6887-1993 JB/T 6889-1993

JB/T 6887-2022 Fan-used cast iron parts technical specifications JB/T 14525-2022 Switch for electric balance aids

GB/T 11351-1989 Mass tolerances for castings GB/T 11351-2017 Mass tolerances of casting GB/T 1348-1988 Spheroidal graphite iron castings GB/T 1348-2009 Spheroidal graphite iron castings GB/T 1348-2019 Spheroidal graphite iron castings GB/T 15056-1994 Evaluation method on cast surface roughness GB/T 15056-2017 Casting surface roughness—Appraising method GB/T 223.3～78 GB/T 228-2002 Metallic materials—Tensile testing at ambient temperature 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 228.2-2015 Metallic materials—Tensile testing—Part 2:Method of test at elevated temperature GB/T 228.3-2019 Metallic materials—Tensile testing—Part 3:Method of test at low temperature GB/T 228.4-2019 Metallic materials—Tensile testing—Part 4:Method of test in liquid helium GB/T 229-1994 Metallic materials—Charpy notch impact test GB/T 229-2007 Metallic materials—Charpy pendulum impact test method GB/T 229-2020 Metallic materials—Charpy pendulum impact test method 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/T 230.2-2002 Metallic rockwell hardness test—Part 2:Verification and calibration of hardness testers(scales A,B,C,D,E,F,G,H,K,N,T) GB/T 230.2-2012 Metallic materials—Rockwell hardness test—Part 2:Verification and calibration of testing machines GB/T 230.2-2022 Metallic materials—Rockwell hardness test—Part 2:Verification and calibration of testing machines and indenters GB/T 230.3-2002 Metallic rockwell hardness test—Part 3:Calibration of hardness reference blocks(scales A,B,C,D,E,F,G,H,K,N,T) GB/T 230.3-2012 Metallic materials—Rockwell hardness test—Part 3:Calibration of reference blocks(scales A,B,C,D,E,F,G,H,K,N,T) GB/T 230.3-2022 Metallic materials—Rockwell hardness test—Part 3:Calibration of reference blocks GB/T 231.1～3 GB/T 3180-1982 Specification for medium manganese wear-resistant spheroidal iron castings GB/T 6060.1-1997 Roughness comparison specimens—Cast surfaces GB/T 6060.1-2018 Surface roughness comparison specimen—Part 1:Casting surface GB/T 6414-1999 Castings—System of dimensional tolerances and machining allowances GB/T 6414-2017 Castings—Dimensional tolerances and geometrical tolerances and machining allowances GB/T 7216-1987 Gray cast iron metallography GB/T 7216-2009 Metallographic test for gray cast iron GB/T 7216-2023 Metallographic test for grey cast iron GB/T 8491-1987 Corrosion resistant high silicon iron castings GB/T 8491-2009 Corrosion resistant high silicon iron castings GB/T 9437-1988 Heat resistant iron castings GB/T 9437-2009 Heat resistant iron castings GB/T 9439-1988 Grey iron castings GB/T 9439-2010 Grey iron castings GB/T 9439-2023 Grey iron castings GB/T 9441-1988 Metallographic test for spheroidal graphite cast iron GB/T 9441-2009 Metallographic test for spheroidal graphite cast iron GB/T 9441-2021 Metallographic test method for spheroidal graphite cast iron JB/T 5926-2005 Vibrating stress relief effect-Evaluation methods JB/T 6886-2010 Fan Painting Technical Conditions JB/T 6886-1993 Fan painting technical specification JB/T 6886-1993 JB/T 7699-2022 Specification for Wooden Patterns and Core Boxes for Founding Process JB/T 7699-1995 Technical Specification for Wooden Patterns and Core Boxes for Founding Process JB/T 7945-1999 Methods for testing the mechanical properties of grey cast iron JB/T 7945.1-2018 Mechanical Properties Test Method for Grey Iron - Part 1: Tensile Test Method JB/T 7945.2-2018 JB/T 7945.2-2018 - Grey iron mechanical properties testing method Part 2: Flexural test results