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Oil and gas industries including lower carbon energy. External coatings for buried or submerged pipelines use…

Oil and gas industries including lower carbon energy — External coatings for buried or submerged pipelines us…

Overview ISO 21809-4:2026 is an international standard published by ISO that establishes the requirements for the qualification, application, inspection, testing, handling, and storage of materials u…

Petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline t…

Overview ISO 21809-4:2009 specifies requirements for the qualification, application, inspection, testing, handling and storage of materials used for plant application of two-layer polyethylene coatin…

Petroleum and natural gas industries. External coatings for buried or submerged pipelines used in pipeline tr…

1 Scope This part of ISO 21809 specifies the requirements for qualification, application, inspection, testing, handling and storage of materials for plant application of two-layer polyethylene coatin…