Something to Support Pipe or Fabrication

Before we reach to the welding, weld, welding machine or welding job also with welding supply, now we read about something to Support Pipe or Fabrication, because at the fabrics I have to steal a little bit time to do this post for Piping & Fabrication.

Underbead Crack.

weld crack

A crack in the heat-affected zone or in previously deposited weld metal paralleling the underside contour of the deposited weld bead and usually not extending to the surface.

Undercut.
A groove melted into the base material adjacent to the toe or root of a weld and left unfilled by weld material.

Van Stoning.
Hot upsetting of lapping pipe ends to form integral lap flanges, the lap generally being of the same diameter as that of the raised face of standard flanges.

Vapor Pressure.
The pressure exerted by the gaseous form, or vapor, of liquid. When the pressure above a liquid equals its vapor pressure, boiling occurs. If the pressure at any point in the flow of a liquid falls below the vapor pressure or becomes equal to the vapor pressure, the liquid flashes into vapor. This is called cavitation. The vapor thus formed travels with the liquid and collapses where the pressure is greater than vapor pressure. This could cause damage to piping and other components.

Vertical Position.

weld position

With respect to pipe welding, the position in which the axis of the pipe is vertical, with the welding being performed in the horizontal position. The pipe may or may not be rotated.

Viscosity.
In flowing liquids, the internal friction or the internal resistance to relative motion of the fluid particles with respect to one another.

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