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Duct Construction and Uses
Discussion in fabricating and use of products that move air including spiral pipe, duct board and typical sheet metal work.
       


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  #1  
Old 10-20-2015, 03:03 PM
Maller83 Maller83 is offline
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Cool Duct bend Insulation template

Basically I'm lagging the duct bend in 30mm thick phenolic board
So bend is 450 c/radius = 450

450 + 30mm insulation thickness is 510mm
So it's
510 od x 3.142 = 1602mm template length

Need to determine template heel and throat heights as I'm using flat board and want to sit nicely on the bend seams

Hope someone under stands haha

Sorry for long winded message

Last edited by Maller83; 10-20-2015 at 03:05 PM. Reason: Wrong
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Old 10-21-2015, 03:13 PM
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Bud Bud is offline
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Welcome to the forums. I have a PDF copy of Laying Out For Boiler Makers and Sheet Metal Workers 1921. Let me see what happened to the link and it should be a world of help...

If you have a couple of days I may be able to help you out.
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duct sealer, hvac, insulation

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