ECCENTRIC REDUCERS DIMENSIONS

hello,

Can anybody help me pls.....i am about to fabricate an eccentric reducer 44"x14"......i wanna know what will be the length. Is it possible to use rolled plate ASTM A516 with a thicknes of 12.7 rather that combination of reducers to save money.

It will be used in burried chilled water piping. Operating temp is 39F and Operation Pressure is 145 psi.

Thanks very much!

riz_john ...Your problem has some "interesting issues", as others here have pointed out. But to look at your problem at face value, I'd say there is no standard length dimension for a fabricated fitting. And in your case because your reducing the main header size down to a size less then half the original diameter, the longer the fitting the better ...to get the best flow-thru you can in this situation. The other issue I have with your fitting is WHERE is this going to be fabricated? ...Shop or Field?
...If this is field you'd probably get an "orange peel" design. This is where the welders cut pie-shaped sections out of a piece of pipe and then bent the remaining parts down on themselves and re-weld together. Sounds complicated, and it is to a point. But this type of field fabrication has and is done in the oil fields all the time & for a number of years ...so nothing new.
Shop fabrication you might end up with a rolled plate type fitting or you still might get the "orange-peel" construction. It would all depends on what you as the client wanted and what the shop was equipped to do. Your 2 main issues here, as I see it, are going to be fabrication and transportation costs.
That’s my $0.02, Good Luck!