GB/T 35078-2018 High speed precision hot upsetting forgings—General specification

GB 13318-2003 General rules for safety and environmental conservation of forging production GB/T 19096-2003 Technical drawing—Drawing presentation—Vocabulary and indications for edges of undefined shape GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods GB/T 224-1987 Determination of depth of decarburization of steel GB/T 224-2008 Determination of depth of decarburization of steels GB/T 224-2019 Determination of the depth of decarburization of steels GB/T 226-1991 Etch test for macrostructure and defect of steels GB/T 226-2015 Test method for macrostructure and defect of steel by etching 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 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 231.1-2002 Metallic materials—Brinell hardness test—Part 1:Test method GB/T 231.1-2009 Metallic materials—Brinell hardness test—Part 1:Test method GB/T 231.1-2018 Metallic materials—Brinell hardness test—Part 1:Test method 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 702-1986 Hot-rolled round and square steels—Dimension, shape, weight and tolerance GB/T 702-2004 Hot-rolled round and square steel bars-Dimension,Shape,weight and tolerance GB/T 702-2008 Hot-rolled steel bars—Dimensions,shape,weight and tolerances GB/T 702-2017 Hot-rolled steel bars—Dimensions,shape,weight and tolerances GB/T 3077-1999 Alloy structure steels GB/T 3077-2015 Alloy structure steels GB/T 5216-1985 Technical requirements for structural steel with specified hardenability bands GB/T 5216-2004 Structural steels subject to end-quench hardenability requirements GB/T 5216-2014 Structural steels with specified hardenability bands 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 8541-1997 Terminology of forging and stamping GB/T 8541-2012 Terminology of forging and stamping GB/T 13298-1991 Metal—Inspection method of microstructure GB/T 13298-2015 Inspection methods of microstructure for metals GB/T 13299-1991 Steel—Determination of microstructure GB/T 13299-2022 Determination of free cementite,pearlite and Widmanstaten structure in steel GB/T 13320-1991 Metallographic grading atlas and assessing method for steel die forgings GB/T 13320-2007 Metellographic grading atlas and assessing method for steel die forgings GB/T 18254-2002 High-carbon chromium bearing steel GB/T 18254-2016 High-carbon chromium bearing steel GB/T 191-2025 Graphical symbols marking for handling and storage of packages GB/T 13320-2025 Metellographic grading atlas and assessing method for steel die forgings