DIN EN ISO 21809-1 : 2020 Title: Petroleum and natural gas industries - External coatings for buried or submerged pipelines used in pipeline transportation systems - Part 1: Polyolefin coatings (3-layer PE and 3-layer PP) (ISO 21809-1:2018) Year: 2020 Publisher: DIN Media GmbH Availability: Within 1-2 working days