Pipelines are color-coded based on the group of substances they transport: Substance Group Identification Color (Potable, technical, wastewater) Green Steam (Saturated, superheated) Red Air (Compressed, atmospheric) Blue Gases (Combustible and non-combustible) Yellow Acids Orange Alkalis Purple Combustible Liquids Brown Non-combustible Liquids / Other Grey
Indicate fire or explosion hazards (flammability). gost pokraska truboprovoda
Note: Firefighting pipelines must be painted at connections, valves, and pump areas, regardless of whether they carry water, foam, or steam. 2. Warning Rings (Hazards) Pipelines are color-coded based on the group of