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Anonymous Poster

Pipe Bend Redius Calculation

11/17/2010 5:52 AM

I want to calculate the pipe bend redius for 5D bend of main steam pipe (570^ C temp., P91 material) It is a ID base pipe and pipe ID is 340mm. Pipe thickness is 68mm (MWT). How to calculate the bend redius.
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Codemaster
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Join Date: Jul 2005
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#1

Re: Pipe bend redius calculation

11/17/2010 7:39 AM

For a 5D bend the bend radius (to centreline) is nominally 5 x diameter, but I don't know offhand whether that is 5 x ID, or OD or nominal dia. I suggest you look in a catalogue, or contact supplier, or go out and measure it.

Cheers......Codey

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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

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Location: Richland, WA, USA
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#2

Re: Pipe Bend Redius Calculation

11/18/2010 11:21 AM

Boy, that is some heavy pipe!

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PennPiper
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Engineering Fields - Piping Design Engineering - Retired Piper

Join Date: Feb 2007
Location: Bayonet Point, Florida
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#3

Re: Pipe Bend Redius Calculation

11/18/2010 11:32 AM

The "D" in a 5D bend or any other Bend refers to the "Nominal Pipe Size".

Therefore a "5D" Bend in 6" pipe has a 30" Radius.

It would work the same for metric sizes to.

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