GB/T 9125-2003 Fasteners for pipe flange joints (Text of Document is in English) - Beijing translation compay

1 Scope

This standard specifies technical requirements for types and dimensions, materials and mechanical properties, etc. of fasteners for pipe flange joints.
This standard is applicable to the fasteners for pipe flange joints of different materials such as steel flange, cast iron flange, copper alloy and composite flange.
Fasteners specified in this standard cover hexagon head bolts, stud bolts, full thread studs, hexagon nuts and large hexagon nuts.

2 Normative References

The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document is applicable to this standard.
GB/T 2 "Fasteners - Ends of Parts with External Thread" (GB/T 2-2001, idt ISO 4753:1999)
GB/T 90.1 "Fasteners - Acceptance Inspection" (GB/T 90.1-2002, idt ISO 3269:2000)
GB/T 90.2 "Fasteners - Marking and Packaging"
GB/T 196 "General Purpose Metric Screw Threads-Basic Dimensions" (GB/T 196-2003, ISO 724:1993, MOD)
GB/T 197 "General Purpose Metric Screw Threads - Tolerances" (GB/T 197-2003, ISO 965-1:1998, MOD)
GB/T 699 "Quality Carbon Structural Steels"
GB/T 901 "Double End Studs (Clamping Type)-Product Grade B"
GB/T 1220 "Stainless Steel Bars"
GB/T 1229 "High Strength Large Hexagon Nuts for Steel Structures"
GB/T 1237 "Designation System for Fasteners" (GB/T 1237-2000, eqv ISO 8991:1986)
GB/T 3077 "Alloy Structure Steels"