Re: [MW:7713] DIFFERENCE BETWEEN PIPE AND TUBE

Please go through attached PDF File

On Fri, Oct 22, 2010 at 3:48 PM, Kisan Gamane <kisankrishna1506@gmail.com> wrote:

The size of a tube is determined by it's OD and the thickness. The actual OD of a tube is just the same as it's nominal OD. A certain size of a tube will keep the same OD no mater what the thickness is. It is true for pipe except that the actual OD is larger than it's nominal OD.
For example, for a 1" schedule 5s pipe, the actual OD is 1.315", the thickness is 0.065" and the ID is 1.185". When it's thickness is schedule xxs (0.358"), then it's ID is reduced to 0.599" while keeping it's OD. Furthermore, the actual OD of a pipe is just the same as it's nominal OD when the size is the same as or larger than 14" per ASME/ANSI B36.10/19 . Consequently, both the size of tube and pipe is measured by it's OD and the thickness.  

original difference:

actually tube is used when we need to transfer heat from its walls and we want this to be happen while in pipes we try to stop the heat transfer such as we use tubes in boilers because we make steam we need to transfer the heat while when we transport steam we use pipes because we wana save heat energy.
2: pipe can be thick according to formula d/t >10 while tube will must thin according to this formula.

On Fri, Oct 22, 2010 at 10:26 AM, Rajpal Dhillon <rajpal.bantaa@gmail.com> wrote:

Difference between pipe and tube is that in case of pipe OD is fixed
and ID will change as thickness changes but in case of tube ID is
fixed OD will change as the thickness changes.

On 10/21/10, pravez alam <alampravez@gmail.com> wrote:
> Any one can explain what the real difference between pipe and tube.
>
> --
> Pravez Alam
> Doha Qatar
> Mob#+9746813248
>
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--
Rajpal Singh Dhillon
Punjlloyd Limited
DJPL Project BHAVNAGAR
Mob:9510520370,9228293864

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