DIN EN ISO 21809-2 (2012-09)被替代
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/DIS 21809-2:2012); English version prEN ISO 21809-2:2012
出版：German Institute for Standardisation (Deutsches Institut für Normung)
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