Industritë e naftës dhe gazit natyral -Brylat e filetuar, rekorderitë dhe flanxhat për sistemet e transportit të naftës me tubacion -Pjesa 2 : Rekorderitë

Petroleum and natural gas industries - Induction bends, fittings and flanges for pipeline transportation systems - Part 2: Fittings (ISO 15590-2:2003 modified)

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This part of prEN 14870 specifies the technical delivery conditions for unalloyed or low alloy steel seamless and welded pipeline fittings for use in pipeline transportation systems for the petroleum and natural gas industries as defined in ISO 13623. This part of prEN 14870 is applicable to welding-end fittings such as elbows, caps, tees, single or multiple extruded headers, reducers, and transition sections made from seamless and welded pipe of unalloyed or low-alloy steels. This part of prEN 14870 specifies three classes of fitting corresponding to increasing quality requirements in accordance with the technical delivery conditions of ISO 3183 for pipe as indicated in Table 1. Table 1 - Fitting class and corresponding pipe standard Fitting class Corresponding pipe standard Class A ISO 3183-1 Class B ISO 3183-2 Class C ISO 3183-3 This part of prEN 14870 is not applicable to the selection of the fitting class. This part of prEN 14870 is not applicable to the materials for, or the attachment of, factory-welded extensions. On-land supply systems used by the gas supply industry are excluded from the scope of this standard.