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.
Tube is most often specified by the OD and wall thickness, but may be specified by any two of OD, inside diameter (ID), and wall thickness.
The larger company hydraulic such a person is the head of the plant, and in the case of self-employment, the local municipality or even a court.
Much more serious consequences can bring poor execution of large hydraulic works, connected for example with the creation of a home network plumbing.
In this case we will be entitled to receive compensation even.
Years of training and/or experience are needed to become a skilled plumber; some jurisdictions also require that plumbers be licensed. Some needed skills, interests, and values Reading drawings, and specifications to determine layout of water supply, waste, and venting systems Detecting faults in plumbing appliances and systems, and correctly diagnosing their causes Installing, repairing and maintaining domestic, commercial, and industrial plumbing fixtures and systems Locating and marking positions for pipe connections, passage holes, and fixtures in walls and floors Measuring, cutting, bending, and threading pipes using hand and power tools or machines Joining pipes and fittings together using soldering techniques, compression fittings, threaded fittings, and push-on fittings. Testing pipes for leaks using air and water pressure gauges Awareness of legal regulations and safety issues Ensuring safety standards and build regulations are met. Źródło: https://en.wikipedia.org/wiki/Plumber#Plumbing_activities.