Both piping and ducting have evolved from mechanical engineering and often perform the same function. Piping materials, pipe expansion, stresses and supports affect both. Therefore, both piping and ducting require stress and material engineers. Fluids are transported using pipes and ducts. asme b 31.3/asme b 31.1 relates to piping engineering, while asme b 31.4/asme b 31.8 relates to piping engineering.
Geographic Classification: Pipelines and ducts are usually divided by barriers or fences. Outside the fence is considered to be the pipeline reach, while inside the fence is considered to be the pipeline reach. Pipelines typically travel long distances (across villages or countries), while individual pipelines are limited in length (equipment to equipment or pipeline to equipment).