Anything Related to Pipe & Fabrication

After doing an inspection directly to the Pipe Rack Line 4 with the boss, finally I can get back to the office (in the container) and start to input the data. Mean while the computer process the data, I will do this post for Pipe & Fabrication and now we will write about Anything Related to Pipe & Fabrication.

Tack Weld.

tack weld

A small weld made to hold parts of a weldment in proper alignment until the final welds are made.

Tee Joint.

tee joint

A welded joint between two members located approximately at right angles to each other in the form of a T.

Tempering.
A process of heating a normalized or quench-hardened steel to a temperature below the transformation range and, from there, cooling at any rate desired.
This operation is also frequently called stress relieving.

Testing.
An element of verification for the determination of the capability of an item to meet specified requirements by subjecting the item to a set of physical, chemical, environmental, or operating conditions.

Thermoplastic.
A plastic which is capable of being repeatedly softened by increase of temperature and hardened by decrease of temperature.

Thermosetting Plastic.
Plastic which is capable of being changed into a substantially infusible or insoluble product when cured under application of heat or chemical means.

Thixotropic Liquid.
If the viscosity of a liquid decreases as agitation is increased at constant temperature, the liquid is called thixotropic. Examples include glues, greases, paints, etc.

Throat of a Weld.

throat of a weld

A term applied to fillet welds. It is the perpendicular distance from the beginning of the root of a joint to the hypotenuse of the largest right triangle that can be inscribed within the fillet-weld cross section.

Toe of Weld.

toe of weld

The junction between the face of a weld and the base metal.

Transformation Range.
A temperature range in which a phase change is initiated and completed.

Transformation Temperature.
A temperature at which a phase change occurs.

Trepanning.
The removal by destructive means of a small section of piping (usually containing a weld) for an evaluation of weld and base-metal soundness. The operation is frequently performed with a hole saw.

Tube.

tube of pipe

A hollow product of round or any other cross section having a continuous periphery. Round tube size may be specified with respect to any two, but not all three, of the following: outside diameter, inside diameter, and wall thickness. Dimensions and permissible variations (tolerances) are specified in the appropriate ASTM or ASME specifications.

Turbinizing.
Mechanical removal of scale from the inside of the pipe by means of air-driven centrifugal rotating cleaners. The operation is performed on steel pipe bends after hot bending to remove loose scale and sand.

Turbulent Flow.

turbulent flow

Fluid flow in a pipe is usually considered turbulent if the Reynolds number is greater than 4000. Fluid flow with a Reynolds number between 2000 and 4000 is considered to be in ‘‘transition.’’