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)
石油和天然气行业 - 用于管道输送系统的埋地或淹没管道的外部涂层 - 第1部分:聚烯烃涂层(3层PE和3层PP)
This document specifies requirements for plant-applied external three-layer polyethylene and polypropylene based coatings for corrosion protection of welded and seamless steel pipes for pipeline transportation systems in the petroleum and natural gas industries in accordance with ISO 13623.
NOTE Pipes coated in accordance with this document are considered suitable for further protection by means of cathodic protection.