GB/T 3765-2008 24°cone connectors—Specification

GB/T 3765-1983 Specification for bite type tube fittings

ISO 1127 GB/T 193-2003 General purpose metric screw threads—General plan GB/T 197-2003 General purpose metric screw threads—Tolerances GB/T 197-2018 General purpose metric screw threads—Tolerances 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 3103.1-2002 Tolerances for fasteners—Bolts, screws, studs and nuts GB/T 3141-1994 Industrial liquid lubricants—ISO viscosity classification GB/T 3452.2-1987 Appearance quality acceptance criteria for rubber O-rings GB/T 3452.2-2007 Fluid power systems—O-rings—Part 2:Quality acceptance criteria GB/T 3639-2000 Cold-drawn or cold-rolled precision seamless steel tubes GB/T 3639-2009 Seamless cold-drawn or cold-rolled steel tubes for precision applications GB/T 3639-2021 Seamless cold-drawn or cold-rolled steel tubes for precision applications GB/T 5649-1985 Flared type tube fittings—Locknut GB/T 5649-2008 Flared couplings—Lock nut and lockup washer GB/T 6031-1998 Rubber,vulcanized or thermoplastic—Determination of hardness (hardness between 10 IRHD and 100IRHD) GB/T 6031-2017 Rubber,vulcanized or thermoplastic—Determination of hardness(hardness between 10 IRHD and 100 IRHD) GB/T 7306.1-2000 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads—Part 1:Parallel internal and taper external threads GB/T 7306.2-2000 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads—Part 2:Taper internal and external threads GB/T 7307-2001 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads GB/T 7631.2-2003 Lubricants,industrial oils and related products(class L)—Classification—Part 2:Family H(Hydraulic systems) GB/T 12716-2002 Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on the threads GB/T 12716-2011 Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on threads GB/T 17446-1998 Fluid power systems and components—Vocabulary GB/T 17446-2012 Fluid power systems and components—Vocabulary GB/T 17446-2024 Fluid power systems and components—Vocabulary GB/T 19674.2-2005 Connections for general use and fluid power—Ports and stud ends with thread—Stud ends with elastomeric sealing(type A and type E) GB/T 19674.3-2005 Connections for general use and fluid power—Ports and stud ends with thread—Stud ends with metal-to-metal sealing(type B) GB/T 3-1997 Run-outs，undercuts and chamfers forgeneral purpose metric screw threads