Line Sizing Calculations

please go through the following site.

http://www.engineeringtoolbox.com/natural-gas-pipe-calculator-d_1042.html

For a liquid, as a "rule of thumb", a velocity of less than 1m/s means the pipe is too big (sizes up to, say 500mm Ø). If it is more than 3m/s it is too small.

However, if it is flammable, an electrical insulator and static charge buildup is to be avoided, the velocity needs to be no more than 1m/s.

Does that help?

People like you creat bad impression about Indians.

You have not specified Line for what?

Water/ Steam/ Petroleum/ gas or what?

Sizing depends on what you are passing through, at what pressure, what temperature

for petroleum lines ............

<...bad impression about Indians...>

The original poster did not state the country of posting.

Also, this forum is usually very tolerant of users whose native language is not English.

You are right. CR4 is tolerent. But the person asking questions should also be careful and should ask after some efforts done.

Shivprasad is name from India. He may be residing out of India, still he is Indian.

Earlier also same point was raised by few others, thus I suggested so to Shivprasad.