Plumbing Tap water Pipelines transporting gas or liquid over long distances Scaffolding Structural steel As components in mechanical systems such as: Rollers in conveyor belts Compactors (e.g.: steam rollers) Bearing casing Casing for concrete pilings used in construction projects High temperature or pressure manufacturing processes The petroleum industry: Oil well casing Oil refinery equipment Delivery of fluids, either gaseous or liquid, in a process plant from one point to another point in the process Delivery of bulk solids, in a food or process plant from one point to another point in the process The construction of high pressure storage vessels (note that large pressure vessels are constructed from plate, not pipe owing to their wall thickness and size).Źródło: https://en.wikipedia.org/wiki/Pipe_(fluid_conveyance)#Uses
A pipe is a tubular section or hollow cylinder, usually but not necessarily of circular cross-section, used mainly to convey substances which can flow ? liquids and gases (fluids), slurries, powders and masses of small solids.
It can also be used for structural applications; hollow pipe is far stiffer per unit weight than solid members. In common usage the words pipe and tube are usually interchangeable, but in industry and engineering, the terms are uniquely defined.Depending on the applicable standard to which it is manufactured, pipe is generally specified by a nominal diameter with a constant outside diameter (OD) and a schedule that defines the thickness.
Pipe assemblies are almost always constructed with the use of fittings such as elbows, tees, and so on, while tube may be formed or bent into custom configurations.
Pipe installation is often more expensive than the material and a variety of specialized tools, techniques, and parts have been developed to assist this.
The pipe spools are usually tagged with a bar code and the ends are capped (plastic) for protection.The pipe and pipe spools are delivered to a warehouse on a large commercial/industrial job and they may be held indoors or in a gridded laydown yard. The pipe or pipe spool is retrieved, staged, rigged, and then lifted into place.
Small pipe is typically not heavy and can be lifted into place by the installation craft laborer.
However, during a plant outage or shutdown, the small (small bore) pipe may also be pre-fabricated to expedite installation during the outage.
After the pipe is installed it will be tested for leaks.
Before testing it may need to be cleaned by blowing air or steam or flushing with a liquid.Źródło: https://en.wikipedia.org/wiki/Pipe_(fluid_conveyance)#Installation.