Show the Newtonian Liquid, Nipple, DN, NPS also Nozzle on Piping System

This is Sunday morning in here, the bright Sunday morning should, but the fact is the rain is fall down, same with me too, I can't spend my times with my family because I have to go to work in this day. Listening someone who doesn't like me with my position now, makes me mad, but I don't care about that, I just want to do this post about Piping System, Fabrication and Welding, Fitter, anything about something connect with this job. and today to remove the bad mood inside I just want to show the world about me through this blog.

Newtonian Liquid.
A liquid is called newtonian if its viscosity is unaffected by the kind and magnitude of motion or agitation to which it may be subjected, as long as the temperature remains constant. Water and mineral oil are examples of newtonian liquids.

Nipple.

Nipple

A piece of pipe less than 12 in (0.3 m) long that may be threaded on both ends or on one end and provided with ends suitable for welding or amechanical joint. Pipe over 12 in (0.3 m) long
is regarded as cut pipe. Common types of nipples are close nipple, about twice the length of a standard pipe thread and without any shoulder; shoulder nipple, of any length and having a shoulder between the pipe threads; short nipple, a shoulder nipple slightly longer than a close nipple and of a definite length for each pipe size which conforms to manufacturer’ standard; long nipple, a shoulder nipple longer than a short nipple which is cut to a specific length.

Nominal Diameter (DN).

Nominal Diameter (DN)

A dimensionless designator of pipe in metric system. It indicates standard pipe size when followed by the specific size designation number without the millimeter symbol (for example, DN 40, DN 300).

Nominal Pipe Size (NPS).
A dimensionless designator of pipe. It indicates standard pipe size when followed by the specific size designation number without an inch symbol (for example, NPS 11⁄₂, NPS 12).

Nominal Thickness.
The thickness given in the product material specification or standard to which manufacturing tolerances are applied.

Nondestructive Examination or Inspection.
Inspection by methods that do not destroy the item, part, or component to determine its suitability for use.

Normalizing.
A process in which a ferrous metal is heated to a suitable temperature above the transformation range and is subsequently cooled in still air at room temperature.

Nozzle.

Nozzle

As applied to piping, this term usually refers to a flanged connection on a boiler, tank, or manifold consisting of a pipe flange, a short neck, and a welded attachment to the boiler or other vessel. A short length of pipe, one end of which is welded to the vessel with the other end chamfered for butt welding, is also referred to as a welding nozzle.

I think the best title for this post is Show the Newtonian Liquid, Nipple, DN, NPS also Nozzle on Piping System, that's what I think but who cares.