ISO 21809-2-2026 石油和天然气行业，包括低碳能源——管道运输系统中使用的埋地或水下管道的外部涂层单层熔结环氧涂层

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Oil and gas industries including

lower carbon energy — External

coatings for buried or submerged

pipelines used in pipeline

transportation systems —

Part 2:

Single-layer fusion-bonded epoxy

coatings

Industries du pétrole et du gaz, y compris les énergies à faible

teneur en carbone — Revêtements externes des conduites

enterrées ou immergées utilisées dans les systèmes de transport

par conduites —

Partie 2: Revêtements monocouche à base de résine époxydique

appliquée par fusion

International

Standard

ISO 21809-2

Third edition

2026-02

Reference number

ISO 21809-2:2026(en) © ISO 2026

ISO 21809-2:2026(en)











CP 401 • Ch. de Blandonnet 8



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www.iso.org



ISO 21809-2:2026(en)

Foreword ......................................................................................................................................................................................................................................................v

1 Scope ............................................................................................................................................................................................................................................. 1

2 Normative references ................................................................................................................................................................................................. 1

  ................................................................................................................................................................................................ 2

4 Symbols and abbreviated terms...................................................................................................................................................................... 6

  ......................................................................................................................................................................................................................6

  ...........................................................................................................................................................................................6

5 General requirements ................................................................................................................................................................................................ 7

  ................................................................................................................................................................................................................... 7

  ...................................................................................................................................................................7

6 Information supplied by the purchaser .................................................................................................................................................. 7

 ........................................................................................................................................................................................7

 .................................................................................................................................................................................8

  .................................................................................................................................................................................................. 8

  ............................................................................................................................................................................................ 9

  ........................................................................................................................................................................................................................ 9

  ...................................................................................................................................................................................... 9

  ......................................................................................................................................................................10

  ..................................................................................................................................................................................................10

  ...............................................................................................................................................11

  ................................................................................................................................... 12

  ............................................................................................................................................................................. 13

9 Application of coating ..............................................................................................................................................................................................13

  ......... ........................................................................................................................................................................................................... 13

  .....................................................................................................................................................................................14

  ...........................................................................................................14

  ...........................................................................................................................................................14

  ...............................................................................................................................................14

  ......................................................................................................................14

  ....................................................................................................................... 15

  ................................................................................................................................................................................................. 15

  ......................................................................................................................................................................... 15

9.4 Coating thickness .......................................................................................................................................................................................... 15

  ................................................................................................................................................................................................................... 15

  ................................................................................................... 16

  ..................................................................................................................................................................................................................... 16

  ............................................................................................................................. 16

 ....................................................................................................................................................17

  ..............................................................................................................................................17

  ...............................................................................................................................................18

  ....................................................................................................................................................................19

  ............................................................................................................................... 19

  ....................................................................................... 20

11 Inspection and testing ............................................................................................................................................................................................ 23

  ........................................................................................................................................... ......................................................................... 23

  ................................................................................................................................................ 23

  .............................................................................................. 23

  ................................................................................................................................................................................................. 23

  ..................................................................................................................................................................... 23

  ........................................................................................................................................... .....................24

  ...........................................................................................................................................................................................................24

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标签： #ISO #管 #石油

摘要：

本文档详细解读了国际标准ISO 21809-2-2026，该标准专为石油和天然气行业（涵盖低碳能源领域）中管道运输系统所用埋地或水下管道的外部涂层设计，核心聚焦于单层熔结环氧涂层（FBE）的技术要求、材料规范及施工检验指南。通过深入分析该标准的更新要点，包括对FBE涂层附着力、抗阴极剥离性能及耐环境开裂能力的强化指标，帮助工程技术人员与采购专家理解如何在严苛的埋地或水下环境中提升管道的长期防腐寿命。本内容适用于管道涂层制造商、EPC承包商及运维单位，旨在通过标准化涂层工艺，降低低碳能源转型过程中

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ISO 21809-2-2026 石油和天然气行业，包括低碳能源——管道运输系统中使用的埋地或水下管道的外部涂层单层熔结环氧涂层.pdf

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ISO 21809-2-2026 石油和天然气行业，包括低碳能源——管道运输系统中使用的埋地或水下管道的外部涂层单层熔结环氧涂层

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ISO 21809-2-2026 石油和天然气行业，包括低碳能源——管道运输系统中使用的埋地或水下管道的外部涂层单层熔结环氧涂层