YB/T 4070.1-2006 Technical specifications of blade for metal shearing

YB/T 4070.2-2006 Technical specifications of blade for metal shearing

GB/T 1172-1999 Conversion of hardness and strength for ferrous metal GB/T 1299-2000 Alloy tool steels GB/T 13313-1991 Method of Shore hardness testing for mill rolls GB/T 15822-1995 Methods for magnetic particle testing GB/T 15822.1-2005 Non-destructive testing—Magnetic particle testing—Part 1:General principles GB/T 15822.1-2024 Non-destructive testing—Magnetic particle testing—Part 1:General principles GB/T 15822.2-2005 Non-destructive testing—Magnetic particle testing—Part 2:Detection media GB/T 15822.2-2024 Non-destructive testing—Magnetic particle testing—Part 2:Detection media GB/T 15822.3-2005 Non-destructive testing—Magnetic particle testing—Part 3:Equipment GB/T 15822.3-2024 Non-destructive testing—Magnetic particle testing—Part 3:Equipment GB/T 17394-1998 Metallic materials—Leeb hardness test GB/T 1804-2000 General tolerances for linear and angular dimensions without individual tolerance indications GB/T 222-1984 Method of sampling steel for determination of chemical composition and permissible variations for product analysis GB/T 222-2006 Permissible tolerances for chemical composition of steel products GB/T 223.11-1991 Methods for chemical analysis of iron, steel and alloy The ammonium persulfate oxidation volumetric method for the determination of chromium content GB/T 223.11-2008 Iron,steel and alloy—Determination of chromium content—Visual titration or potentiometric titration method GB/T 223.13-2000 Methods for chemical analysis of iron,steel and alloy The ammonium ferrous sulfate titration method for the determination of vanadium content GB/T 223.26-1989 Methods for chemical analysis of iron, steel and alloy The thiocyanate direct photometric method for the determination of molybdenum content GB/T 223.26-2008 Iron,steel and alloy—Determination of molybdenum content—The thiocyanate spectrophotometric method GB/T 223.28-1989 Methods for chemical analysis of iron, steel and alloy The α-benzoinoxime gravimetric method for the determination of molybdenum content GB/T 223.43-1994 Methods for chemical analysis of iron, steel and alloy—Determination of tungsten content GB/T 223.43-2008 Iron,steel and alloy—Determination of tungsten content—Gravimetric method and spectrophotometric method GB/T 223.5-1997 Methods for chemical analysis of iron,steel and alloy—The reduced molybdosilicate spectro photometric method for the determination of acid-soluble silicon content GB/T 223.5-2008 Steel and iron—Determination of acid-soluble silicon and total silicon content—Reduced molybdosilicate spectrophotometric method GB/T 223.59-2008 Iron,steel and alloy—Determination of phosphorus content—Bismuth phosphomolybdate blue spectrophotometric method and antimony phosphomolybdate blue spectrophotometric method GB/T 223.60-1997 Methods for chemical analysis of iron,steel and alloy—The perchloric acid dehydration gravimetric method for the determination of silicon content GB/T 223.60-2024 Iron,steel and alloy—Determination of silicon content—Gravimetric method GB/T 223.63-1988 Methods for chemical analysis of iron,steel and alloy—The sodium(potassium)periodate photometric method for the determination of manganese content GB/T 223.63-2022 Iron,steel and alloy—Determination of manganese content—Sodium(potassium) periodate spectrophotometric method GB/T 223.68-1997 Methods for chemical analysis of iron,steel and alloy The potassium iodate titration method after combustion in the pipe furnace for the determination of sulfur content GB/T 223.69-1997 Methods for chemical analysis of iron,steel and alloy The gas- volumetric method after combustion in the pipe furnace for the determination of carbon content GB/T 223.69-2008 Iron,steel and alloy—Determination of carbon contents—Gas-volumetric method after combustion in the pipe furnace 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 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 4341-2001 Metallic materials—Shore hardness test GB/T 4341.1-2014 Metallic materials—Shore hardness test—Part 1:Test method GB/T 4341.2-2016 Metallic materials—Shore hardness test—Part 2:Verification of hardness testers GB/T 4341.3-2016 Metallic materials—Shore hardness test—Part 3:Calibration of reference blocks GB/T 4879-1999 Rustproof packaging GB/T 222-2025 Steels and alloys—Permissible deviations of product analyzed chemical composition GB/T 223.11-2025 Iron, steel and alloy—Determination of chromium content—Titrimetric method and spectrophotometric method GB/T 223.13-2025 Iron,steel and alloy—Determination of vanadium content—Titrimetric method and spectrophotometric method