Answer / rameez_rz2000

we take the inner dia of tube and outer dia of pipe because
of paints or isolation on it

Answer / anand swami

tubes r those which is used for heat transfer in a heat
exchanger and pipe is one out side heat exhanger not used
for exchanging heat but used for transportation of fluid or gas

Answer / nadeem

tube out side dia count and pipe iternal dia count

Answer / ayaz

this is main difference
TUBE= when temperature high outer dia constant and inner dia expand
of tube
PIPE= pipe temperature high the inner dia constant and outer dia will be extended 

Answer / anp

tube inner dia vary for different pressure ratings. pipe outer dia vary for different pressure ratings

Answer / ashish gupta

Tube use for high pressure & Pipe use for low pressure
applications. in case of high pressure instrument hook-ups
are combination of tubes and pipes it is necessary.

what is the zero elevation and zero supresstion in level measurement, how can use it?

2 Answers   GAIL,

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3 Answers  

what is use of communication wire in multipare cable(oil and gas field), why this communication wire not used in single pair cable?

0 Answers  

I HAVE GOT TYPICAL PROBLEM WITH THE TEMP.INDICATION. THE PROBLEM IS THE K-TYPE T/COUPLE OUT PUT IS CONNECTED TO A INDICATOR.THE INDICATION FLUCTUATES SOME TIMES AND SOME TIME IT IS STABLE. WHEN I CHECKED OUT PUT OF T/COUPLE THE MV WILL NOT VARY. WHERE AS INDICATION FLUCTUATES. WHEN I GIVE MV SOURCE TO T/COUPLE EXTENSIONCABLE FROM THE FIELD IT INDICATION IS STABLE. WHEN GIVE MV SORCE TO INDICATOR ITS INDICATION IS STABLE. PLEASE CLARIFY.

5 Answers  

What is the DIfferences between SMART transmitters and PROFIBUS DP/PA Transmitters?

4 Answers  

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1 Answers   Thermax,

An engineering term STALL used in compressor operation what it means?

1 Answers  

Sir , i have completed my M.Sc In Instrumentation and presently working in Maintenance department 3 yrs Exp , is there is any possible for work in offshore ..

0 Answers  

How to Calibrate Interface Level Troll in field

0 Answers  

Ohm’s law, kirchoff’s law, pascal’s law, Bernoulli’s therem,

1 Answers   CCIE, Emcure,

What is shriking and swell effect for a boiler ?

1 Answers  

defination of plc? why we use plc? application of plc? advantage of plc?

4 Answers