Designed to maximize safety in ammonia plants by offering proper pipe identification, Orange Pipe Markers meet International Institute of Ammonia Refrigeration Bulletin 114 modified color scheme. B-689 Wrap Around Polyester markers are suited for dirty, rusty pipes, while B-681/B-883 High Performance/High Visibility markers are intended for high temperature pipes and exposure to chemicals. For general applications, B-946 Self Sticking Vinyl markers are available.