ISO 15590-3:2022
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The latest, up-to-date edition.
Petroleum and natural gas industries Factory bends, fittings and flanges for pipeline transportation systems Part 3: Flanges
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03-21-2022
This document specifies the technical requirements for carbon steel and low-alloy steel forged flanges for use in pipeline transportation systems for the petroleum and natural gas industries as defined in ISO13623.
This document applies to weldneck and blind flanges (full face, raised face, and RTJ groove) as well as anchor, swivel-ring flanges and orifice flanges.
This document designates those categories of flanges that meet the industry's need to match ISO3183 pipe. These flanges are for normal and low-temperature service and include supplementary requirements where required for sour service.
Materials for, or the attachment of, factory-welded extensions, bolting materials, gaskets, slip-on flanges or flanged fittings are not covered by this document.
This document is not applicable to integrally cast or forged flanges for valves, pumps or other equipment.
This document does not cover the selection of the flange category or pressure class. Sizes and pressure classes listed in ISO7005-1 and applicable to this document are as follows:
DN10(NPS1/2) to DN1500(NPS60);
PN20 (class150), PN50 (class300), PN100 (class600), PN150 (class900), PN250 (class1500), PN420 (class2500).
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