TUBE & PIPE DEFINITION
TUBE & PIPE DEFINITION
(OP)
WHAT IS DIFFERENCE BETWEEN TUBE & PIPE
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RE: TUBE & PIPE DEFINITION
RE: TUBE & PIPE DEFINITION
"Pipes" on the other hand, when faced with internal pressure, will actually tend to straighten and go "back into round" as they deflect.
However, "tubes" also are selected for fluid services for specific purposes, but ARE always designated by their OD as in the html linked page. Heat exchangers, for example, will use "tubing" instead of "pipe", and small instrument lines are usually tubing (1/4 dia stainless tubing, 1/2 inch dia tubing used in a drain line or bleed line, for example)
RE: TUBE & PIPE DEFINITION
Aaron Tanzer
RE: TUBE & PIPE DEFINITION
Pipe, specified by nominal sizes (not actual dimensions) with fairly loose tolerance.
Tube, specified by actual size (usually OD and wall) with tight tolerances.
You also fine many custom tube products, special sizes, tolerances, finishes, and strengths.
The productions and testing methods are defined by the actual specifications and are often the same for pipe and tube, though many tubing specs do require must stricter NDT of the final product.
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Plymouth Tube
RE: TUBE & PIPE DEFINITION
"Tube" is any size and shape to which a buyer and seller agree ( but not to be confused with API tubing).
RE: TUBE & PIPE DEFINITION
RE: TUBE & PIPE DEFINITION
Difference between Pipes and Tubes
http://www.engineeringtoolbox.com/pipes-tubes-d_34...
Tube VS Pipe
http://www.tubecon.co.za/en/technical-info/tubecon...
Pipe Vs Tube
http://jd2.com.au/pipe-vs-tube.html
http://www.welding-advisers.com/
RE: TUBE & PIPE DEFINITION
TUBE-----TRANSFER OF MASS AND HEAT
RE: TUBE & PIPE DEFINITION
Pipe : mass transfer(The size can be larger to sustain the effective mass transfer.)
Tube : heat transfer(The size should be smaller to sustain the effective heat transfer.)
For instance, fired heater tubes (e..g, API 530/560) are normally using pipe materials, but we call them HEATER TUBES instead of heater pipes because the main purpose is heat transfer.
The next will be the followings (other than above answers).
PIPE / TUBE
(1) Size :
NPS / OD
(small-large) / (small)
(2) Thickness :
Schedule / mm or gage
(thin-thick) / (mostly thin)
(3) Design Life (typical for refinery and chemcial plants):
10-25years / 5-15years
(4) Corrosion Allowance :
required / none or minimum
Hope this helps,
Thomas Eun