This standard specifies technical requirements for flared pipe joints such as materials, pressure/temperature requirements, marking methods, requirements for connected pipes, wrenching dimensions and tolerances, structure and manufacturing, performance and qualification tests, installation instructions, procurement information and signs. . This standard applies to hydraulic fluid transmission and general-purpose piping systems with a pipe outer diameter of 4mm to 34mm and a maximum working pressure of 3.5MPa to 16MPa.
GB/T 5653-2008 Referenced Document
GB/T 12716 Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on threads *, 2011-12-30 Update
GB/T 1527 Drawn tube of copper and copper alloys*, 2017-07-12 Update
GB/T 1528 Extruded tube of copper and copper alloys
GB/T 17446 Fluid Transmission Systems and Components Glossary*, 2024-03-15 Update
GB/T 193 General purpose metric screw threads--General plan
GB/T 197 General purpose metric screw threads—Tolerances*, 2018-03-15 Update
GB/T 3 Run-outs, undercuts and chamfers for general purpose metric screw threads
GB/T 3103.1 Tolerances for fasteners--Bolts,screws,studs and nuts
GB/T 7306.1 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 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 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads