Contents 1. General provisions 2. Normative References 3. Flange Type and Flange Seal Contact Face 3.1 Flange type 3.2 Flange sealing face 4. Materials 5. Gaskets and fasteners for flanges 6. Selection and matching of flange joint 7. Rated pressure - temperature value 8. Dimensions 8.1 Dimensions of flange joint 8.2 Structural dimension of flange 8.3 Flange neck 8.4 Pipe thread 9. Welded joints and groove dimensions 9.1 Plate flanges and flat - welded collar loose flange 9.2 Slip on flange 9.3 The welded joints of socket weld flange jointed with steel pipe 9.4 Weld neck flange 9.5 Butt-welded collar 10. Dimensional tolerance 11. Test 12. Inspection and Acceptance 13. Designation and Example of Designation 14. Packaging and embossing stamp marking Annex A (Normative) Steel orifice plate flange Annex B (Informative) Steel jacketed flanges Annex C (Informative) The pipe flange standards may be coordinated for use Annex D (Informative) Approximate mass of flanges Annex E (Informative) Approximate distance of flanges with ring joint face
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