New Development of Multilayer Coating System in Pipelines

Based on an investigation and statistics, the coating system used in pipelines worldwide is going towards the multilayer coating system to meet the needs of pipeline in corrosion control. The multilayer coating system at present can be classified into two kinds, one being epoxy-based dual-layer powder coating system and the other being polyolefins resin-based compounded coating system. The classification and comprehensive evaluation on performance for newly developed multilayer coating systems have been carried out. It is pointed out that the multilayer coating system is tending to develop for future pipeline coating system.