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Pipe weld quantities

4 replies [Last post]
Mon, 2009-08-17 05:49
John Pfluegler
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Can someone explain what is meant by the quantity unit "diameter inch"
It is with respect to number & size of pipe welds.
Thanks

John
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Replies

Wed, 2016-04-20 07:11
#1
Jithin Kambhikanam
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Groups: GPC Qatar, Petro-Chem / Oil & Gas, Planning, Claims & Contracting, TURNAROUND & SHUTDOWN (T/A & S/D)

Hello John,

It means the Size of Pipe which is Hoined to another Pipe of Same Size - Say A 10" pipe Pipe Has a DI - 10

So for Calculation/Report/Progress Purpose - When a 10 " Pipe is Welded with a 10" Pipe - Your output is 10 DI (Dia Inch)

Another example:

If a T Elbow is welded whose size 2 " - 10 " . Then your welding would be 10 + 10 + 2 = 22 DI as you have to weld the 2 10" Pipe by Another 10 " and the Other end of Elbow which is 2 " by a 2" Pipe.

 

 Regards

Jithin

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Tue, 2016-04-19 13:04
#2
Arnel Encio
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Hey Guys!

There are instances where we need to weld two pipe ends to form a bend. In this case, the welding lenght is longer than joining two pipes in straight line. 

For example a 45deg bend is formed by welding two 16in pipe ends. Is the measurement remain the same as 16*1=16 dia inch?

How are we going to measure the pipe welds in this case?

 

regards,

Arnel

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Thu, 2009-10-08 02:45
#3
Basir Ahmed
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Groups: Petro-Chem / Oil & Gas
Lets say you have a 10" pipe and there are three joints.

how would you quantify it.
there are two ways:
1. No. of joints i.e 03
2. Quantity of welding done i.e 10(diameter of the pipe to be welded) x 3(number of joints) = 30(Diameter Inches)

hope the answer is clear.

Regards,

Basir
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Mon, 2009-08-17 11:07
#4
Hady Mohamed
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Let me give it a shot.

Diameter Inch is the unit of measurement for pipewelds.
If you have a particular spool that will have 7 joints, the total inch-dia for the welds of that spool will be :(diameter of the pipe/fitting x 7).

For example, a 6" spool with 7 joints would have a total inch-dia of 6 x 7 = 42 inch dia.

Hope that helps
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