Testing coating

摘要

The international standard ISO21809-3 (edited in December 2008) is largely used today as a reference for the major pipeline operators (oil, gas and water companies). The standard describes nine field joint coating systems and includes the required performances for each system: Bituminous, petrolatum, wax and polymeric tape coating; Heat-shrinkable coatings; Fusion bond epoxy (FBE) powder coatings; Liquid coatings; Polyolefin-based coatings; Thermal spray aluminium (TSA) coatings. Hot applied microcrystalline wax coatings. Elastomeric coatings; Non-crystalline low viscosity polyolefin tapes.