Gonna be busy for a few weeks!!

[dodge_vdub]

Thats what a jacketed pipe is. For example you have a liquid in the inner pipe which you keep hot by pumping steam through the larger outer pipe.

It's exactly that.
Ive got to make a mix of 3"x4" and 4"x5". That's a 3" inner pipe with 4" jacket and so on.
It's for a chocolate factory, so you have chocolate (or product) going through the inner pipe and hot water or steam running through the outer keeping the chocolate molten... Simples

[Steve_PD]

I work at a nylon factory and we pump the molten nylon through 1"2 pipes which snake backwards and forwards inside a 18" pipe which has a liquid inside which is heated to 286 degrees.

[scarr89]

Thats what a jacketed pipe is. For example you have a liquid in the inner pipe which you keep hot by pumping steam through the larger outer pipe.

It's exactly that.
Ive got to make a mix of 3"x4" and 4"x5". That's a 3" inner pipe with 4" jacket and so on.
It's for a chocolate factory, so you have chocolate (or product) going through the inner pipe and hot water or steam running through the outer keeping the chocolate molten... Simples

Wicked cool. 

[justalex81]

either way thats a lot of flange to play with 

[JC]

do u have to make the flange moist before working it