EN ISO 21809-2:2014 石油和天然氣工業.管道運輸系統用掩埋于地下或淹沒于水下的管道外部覆層.第2部分:熔接環氧涂層
Petroleum and natural gas industries - External coatings for buried or submerged pipelines used in pipeline transportation systems - Part 2: Single layer fusion-bonded epoxy coatings (ISO 21809-2:2014)