Material for wood burner flue

[BrokenBiker]

what is everyone using for the flue on their gas bottle burners? I need around 4" dia and around 1M length so I can 2 from it

 

[ukracer]

I get mine from a local fabrication firm. I think the last time I got some it cost me 10 quid for the pipe and 10 quid to ship it.

That was shipping it out.......as I collect locally.

 

[BrokenBiker]

What sort of stuff do you use? Normal 100mm pipe? Or anything a bit different. Just looking for search terms for eBay really as 4" isn't cheap

 

[sardine]

4 " for a small burner, 6 " for a big one. 1 mm stainless is the best for an indoors stove, as it radiates off a ton of heat and doesn't corrode through. Even 5 mm thick steel corrodes in a few years.

Cast iron drain pipe can be got dirt cheap from the scrappy, and it resists corrosion for a very long time. Its ideal for straight flues.

 

[ukracer]

What sort of stuff do you use? Normal 100mm pipe? Or anything a bit different. Just looking for search terms for eBay really as 4" isn't cheap

4mm thick pipe . I used it as it's a size they carry in stock and I can get it within an hour or so..

 

[BrokenBiker]

4 " for a small burner, 6 " for a big one. 1 mm stainless is the best for an indoors stove, as it radiates off a ton of heat and doesn't corrode through. Even 5 mm thick steel corrodes in a few years.

Cast iron drain pipe can be got dirt cheap from the scrappy, and it resists corrosion for a very long time. Its ideal for straight flues.

i would class mine as small as the combustion chamber is a 19kg propane bottle. have found some enameled flue pipe on ebay, 21 quid for a metre and i can get 2 out of it so suits me...can i just grind the enamel off and then weld it up? 3mm thick i think so suits me and my arc welder too

 

[sardine]

The area where you grind the enamel off will rust through.

 

[BrokenBiker]

The area where you grind the enamel off will rust through.

I will obviously paint it again afterwards with vht paint just wanted to make sure I can just grind and weld without having anything else to deal with.

Unless anyone else has a link to 4" dia 3-4mm wall pipe in 1M lengths for about 20 quid

 

[sardine]

I might be getting a load of cast iron drainpipe soon. 6 " i think.

 

[BrokenBiker]

I might be getting a load of cast iron drainpipe soon. 6 " i think.

6" will be a bit big for my needs and i dont fancy welding cast iron to steel with a stick welder. think i have found something suitable just waiting for a reply to say if they still have any

 

[sardine]

You d

6" will be a bit big for my needs and i dont fancy welding cast iron to steel with a stick welder. think i have found something suitable just waiting for a reply to say if they still have any

You dont weld the flue to the stove, just a collar, and fit the flue into that ,which allows for expansion.

 

[BrokenBiker]

You d

You dont weld the flue to the stove, just a collar, and fit the flue into that ,which allows for expansion.

for what i need i will be welding it on...havent had a problem with it on the other 7 ive done and 2 of them are lit atleast once a day for a good few hours in a workshop

 

[gaz1]

5" stainless steel flexi pipe is used with my wood burners

 

[gordon stephenson]

At a push, I have used an old prop shaft from a truck, it was 3-1/2" dia. but it worked great. wall thickness was 1/16"

 

[julianthegypsy]

I will obviously paint it again afterwards with vht paint just wanted to make sure I can just grind and weld without having anything else to deal with.

Unless anyone else has a link to 4" dia 3-4mm wall pipe in 1M lengths for about 20 quid

I have plenty of 4" 3mm wall pipe that you could have for £15 a meter, but I'm in Rugby :-(

 

[BrokenBiker]

thats the problem, i know people in wrexham that have plenty of stuff i could use too but getting it here is the costly bit

 

[rory1]

I used a piece of lamppost that was conveniently crashed into by a car outside the workshop. They disconnected it and left it on the side of the road...... So I chopped it up for them!

 

[ukracer]

I will obviously paint it again afterwards with vht paint just wanted to make sure I can just grind and weld without having anything else to deal with.

Unless anyone else has a link to 4" dia 3-4mm wall pipe in 1M lengths for about 20 quid

If you don't get sorted let me know and I will check prices.

 

[octo0072000]

try local HGV yard see if they have any scrap exhausts lot of heavies run 4 inch exhausts

 

[Shedendman]

I've said this before,it doesn't have to be round,why not make your own up box section style