1. Scope
This standard specifies pattern, dimension, material, marking, technical requirement and service provisions of bolting for use with steel pipe flanges (PN designated).
This Standard is applicable to HG/T 20592 Bolting for use with Steel Pipe Flange, including hex bolt, double end studs (clamping type), full thread stud and nut.
2. Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this Standard. For dated reference, subsequent amendments (excluding content of corrigenda) to, or revisions of, any of these publications do not apply. However, Parties to agreements based on this Code are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition of the normative document referred to applies.
"Fasteners--Ends of Parts with External Thread" GB/T 2
"Fasteners--Acceptance Inspection" GB/T 90.1
"Fasteners--Marking and Packaging" GB/T 90.2
"General Purpose Metric Screw Threads—Basic Dimensions" GB/T 196
"General Purpose Metric Screw Threads—Tolerances" GB/T197
"Double End Studs (Clamping Type)-Product Grade B" GB/T 901
"Stainless Steel Bars" GB/T 1220
"Alloy Structure Steels" GB/T 3077
"Mechanical Properties of Fasteners--Bolts, Screws and Studs" GB/T 3098.1
"Mechanical Properties of Fasteners--Nuts--Coarse Thread" GB/T 3098.2
"Mechanical Properties of Corrosion-resistant Stainless-steel Fasteners-Part 1: Bolts, Screws and Studs" GB/T 3098.6
"Mechanical Properties of Fasteners-Nuts made of Stainless-steel" GB/T 3098.15
"Tolerances for Fasteners--Bolts, Screws, Studs and Nuts" GB/T 3103.1
"Laminated Rods" GB/T 5133
"Hexagon Head Bolts" GB/T 5782
"Hexagon Head Bolts with Fine Pitch Thread" GB/T 5785
"Hexagon Nuts, Style I" GB/T 6170
"Hexagon Nuts, Style I with Fine Pitch Thread" GB/T 6171
"Hexagon Nuts, Style II" GB/T 6175
"Hexagon Nuts, Style II with Fine Pitch Thread" GB/T 6176
"Fasteners-Surface Discontinuities-Bolts, Screws and Studs for General Requirements" GB/T 5779.1
"Fasteners-Surface Discontinuities-Nuts" GB/T 5779.2
"Fasteners-Surface Discontinuities-Bolts, Screws and Studs for Special Requirements" GB/T 5779.3
"Steel Pipe Flanges (PN designated)" HG/T 20592
"Specification for selection of Steel Pipe Flanges, Gaskets and Bolting (PN designated)" HG/T 20614
"Nondestructive Testing of Pressure Vessels" JB/T 4730
"Phenolic Aldehyde Fibre Glass Moulding Compound for Electrical Insulation" JB/T 5822
"Epoxy Laminated Glass Fabric Tube" JB/T 8150
"The Technical Guide for High-temperature Bolt of Fossil-fired Power Plant" DL/T 439
3. Pattern, specification and dimension of bolting
3.0.1 Pattern of bolting
The pattern of bolting for steel pipe flange includes hexagon head bolt, double end studs (clamping type), full thread studs, hexagonal nut (style I) and hexagonal nut (style II).
3.0.2 Hexagon head bolt
1 The pattern and dimension of the hexagon head bolt shall comply with the requirements of GB/T 5782 (coarse thread) and GB/T 5785 (fine pitch thread), while the end of the hexagon head bolt shall be chamfered end, see Figure 3.0.2. The bolt end chamfer complies with the requirements of GB/T 2.
Contents
1. Scope
2. Normative references
3. Pattern, specification and dimension of bolting
4. Materials
5. Bolting service
6. Dimension tolerance
7. Surface treatment
8. Inspection
9. Acceptance, packaging and quality certificate
10. Marking and labeling
Appendix A (Informative) Flap Gasket for Pipe Flange Bolting
Appendix B (informative) Bolting and Bolting Insulation Parts for Insulating Flange
