Rather than rolling some flat it might be easier to cut off a section of tube, somewhere like metalsupermarket might be able to help. Or ask at your local pipe fitting stockist, they usually hold stock up to 6” dia, you might find a straight coupler that fits the bill, 5” schedule 40 is around the size you need, wall will be around 6mm

You might be able to buy a steel pipe flange and turn the OD to 132mm then bore out the middle to size. Lot of swarf though.

Or pay the money to get a piece of 15mm plate cut in a circle laser cut or waterjetted to rough size.

Edited By Hopper on 07/07/2019 10:29:44

Edited By Hopper on 07/07/2019 10:57:33

Terry This is a classic case of where are you, my slip rolls will handle 6 by 20 strip. All so a good reason to belong to a club we have several sets of rolls a large scrap box plus many members willing to help. The club is Cambridge.

Food for thought Paul

There are several suppliers of discs and rings for sale on ebay, just like F W B's example. If you look at the picture, you will notice that the cut is started inboard of the diameter, which may be a problem. The example shown would probably clean up to your required diameter. The thickness might not be enough if you want 15mm finished. I have bought several rings which saved a lot of machining, you just have to look through the whole lot for the sizes required.

As in a 5mm washer? I think a piece of 6mm plate, as a starting point, would suffice for that.

m-machine sell tube 135mm OD x 120mm ID and 5 3/4" OD x 5" ID by the inch. 

Edited By AdrianR on 07/07/2019 12:39:43

I think you were on the right lines, Andrew.

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and, respectfully, told us how he solved his problem so that others might benefit.

I beg to differ. If you had explained you were looking for why were so many of the people that tried to help having to make assumptions and guesses.

My comment, which was only slightly sarcastic and hardly underhand, could have been worded better. It was not your original post I was referring to, but to the fact that when you said it was sorted, did not explain then.

Ian P

That's good. How did you sort it? Did you find a piece of pipe the right size in the end?

Aha, man after my own heart. Well done. Nice when offcuts can be found rather than the expenditure of beer tokens on special orders.