HB 4388-1989 Component Technology Conditions for Modular Assembly Punching Dies and Components

GB/T 1031-1995 Surface roughness parameters and their values GB/T 1031-2009 Geometrical Product Specifications (GPS)—Surface texture:Profile method—Surface roughness parameters and their values GB/T 1182-1996 Geometrical tolerancing—Generalities, definitions, symbols, indications on drawings GB/T 1182-2008 Geometrical Product Specifications(GPS)—Geometrical tolerancing—Tolerances of form, orientation, location and run-out GB/T 1182-2018 Geometrical product specifications(GPS)—Geometrical tolerancing—Tolerances of form,orientation,location and run-out GB 1183 GB/T 1184-1996 Geometrical tolerancing—Geometrical tolerance for features without individual tolerance indications GB/T 1299-2000 Alloy tool steels GB/T 1299-2014 Tool and mould steels GB/T 145-2001 Center holes GB/T 1800.1-1997 Limits and fits—Bases—Part 1:Terminology GB/T 1800.1-2009 Geometrical Product Specifications (GPS)—Limits and fits—Part 1:Bases of tolerances,deviations and fits GB/T 1800.1-2020 Geometrical product specifications (GPS)—ISO code system for tolerances on linear sizes—Part 1:Basis of tolerances, deviations and fits GB/T 1800.2-1998 Limits and fits—Bases—Part 2:Basic rules of tolerances, deviations and fits GB/T 1800.2-2009 Geometrical Product Specifications (GPS)—Limits and fits—Part 2:Tables of standard tolerance grades and limit deviations for holes and shafts GB/T 1800.2-2020 Geometrical product specifications(GPS)—ISO code system for tolerances on linear sizes—Part 2:Tables of standard tolerance classes and limit deviations for holes and shafts GB/T 1800.3-1998 Limits and fits—Bases—Part 3:Numerical values tables of standard tolerances and fundamental deviations GB/T 1800.4-1999 Limits and fits Tables of standard tolerance grades and limit deviations for holes and shafts GB/T 1801-1999 Limits and fits—Selection of tolerance zones and fits GB/T 1801-2009 Geometrical Product Specifications (GPS)—Limits and fits—Selection of tolerance zones and fits GB 1802 GB/T 1803-2003 Limits and fits Tolerance zones for holes and shafts size up to 18mm GB/T 1804-2000 General tolerances for linear and angular dimensions without individual tolerance indications GB/T 196-2003 General purpose metric screw threads—Basic dimensions GB/T 197-2003 General purpose metric screw threads—Tolerances GB/T 197-2018 General purpose metric screw threads—Tolerances GB/T 3-1997 Run-outs，undercuts and chamfers forgeneral purpose metric screw threads GB/T 308-2002 Rolling bearings—Steel balls GB/T 308.1-2013 Rolling bearings—Balls—Part 1:Steel balls GB/T 308.2-2010 Rolling bearings—Balls—Part 2:Ceramic balls GB/T 6403.3-1986 Knurl GB/T 6403.3-2008 Knurl HB 5041-1992 The quality inspection of hard chrome and milk chrome plating layers HB 5062 HB 5800-1999 General tolerance HB 5800-1982 General tolerance GB/T 196-2025 General purpose metric screw threads—Basic dimensions GB/T 1299-2025 Tool and mould steels GB/Z 145-2025 Course development guide for education about standardization—Logistics standardization