Needing Help

[Brake]

I have a couple of pieces of 8" ID steel pipe. Together they are 14' long. I need to weld them together into one pipe. The problem is all ends were poorly torch cut and are extremely uneven. I have no square end to measure off of.

How do I get square ends that I that I can weld up make one straight pipe?

I thought of rigging up rollers on my saw horses and rolling the pipe while holding my torch stationary. It just seems like there should be a simpler way.

Any suggestions?

 

[vekster]

zip cut
band saw
grinder
plasma

 

[rsanter]

Wrap a piece of paper around the pipe and align the edges.
Draw the line and cut or grind to that line.
They will now be square

Aligh and start welding

Bob

 

[Richard D]

What is your location? What are you going to use the pipe for? You can mark it using a "Wrap-a-Round", and cut it with a torch, then grind smooth.
http://www.amazon.com/dp/B004XNZJS8/?tag=atomicindus08-20

I've used paper, beer box, etc. when I didn't have a wrap a round handy.

 

[Richard D]

You can cut 6" (6-5/8" diameter) with a portable band saw, but not 8"(8-5/8" Dia). You will want to grind a bevel as well before you weld it up. If you were near me I'd help you do it.

 

[Nor'Easter]

You can use a framing square to find the lowest end of the cut, then use tape to run a line around the pipe. Then all you have to do is work the excess off with whatever tools you have.

 

[BD1]

What is your location ??? Do you have cutting torch ? Big a$$ grinder ?

 

[plow]

Location?????????????????????????????????????

 

[Brake]

Rsanter nailed it. I knew there should be an easy way. It was never a question of how to cut it, torches and grinders I got. The problem was getting a square line with no straight reference point.

The wrap around tool link from Richard D is pretty cool. If I did a lot of this type of work I would own one. Thanks for the offer to help but the 1000 mile drive one way would be a bummer. I'm in central West Virginia so kinda a long haul for you.

This is going to be an outside chimney for a garage. We will be hooking a woodstove to it.

 

[mrolds88]

Just make sure you do a wall thimble on it. If you cant find one, making one wouldn't be that bad.

 

[fabjunkie]

Big hose clamp will work as well

 

[willymakeit]

Buy a 8'' pvc fitting,split length wise and lay the fitting over the pipe and strike your line.

 

[maddawg1952]

go to an art supply store but the heaviest piece of poster board that thet sell , cut it into a nice straight 6" wide strip ,wrap it around and align the edges so they are all parallel to each other,mark it and cut it

 

[Farmall 1066]

Carefully wrap it with tape, until thick enough to make a mark along the edge.