ISO 21809-4-2026【PDF原文+中文翻译版】油气工业(包括低碳能源)管道运输系统中埋地或水下管道的外涂层-第4部分:聚乙烯涂层(双层PE)

ISO 21809-4-2026【PDF原文+中文翻译版】

Oil and gas industries including lower carbon energy – External coatings for buried or submerged pipelines used in pipeline transportation systems – Part 4: Polyethylene coatings (2-layer PE)

油气工业（包括低碳能源）管道运输系统中埋地或水下管道的外涂层-第 4 部分：聚乙烯涂层（双层 PE）

standard by International Organization for Standardization, 02/01/2026.

LANGUAGES: English+Chinese【英文原文+中文翻译】

Historical Editions: ISO 21809-4:2009

Description

This document specifies the requirements for qualification, application, inspection, testing, handling and storage of materials for plant application of two-layer polyethylene coatings (2-layer PE) applied externally for the corrosion protection of bare steel pipe for use in pipeline transportation systems for oil and gas industries as defined in ISO 13623.

NOTE            Pipes coated in accordance with this document are considered suitable for additional protection by means of cathodic protection.

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