ISO 21809-3:2016/Amd 1:2020 石油和天然气工业 管道运输系统中使用的埋地或水下管道的外部涂层 第3部分:现场接缝涂层 修订1:引入网状涂层
Petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline transportation systems — Part 3: Field joint coatings — Amendment 1: Introduction of mesh-ba