I’m trying to find out if it’s possibly to form a cylinder or tube with a diameter of 1 inch using some kind of curling die for a press brake. I’ve seen dies that make small 360 degree bends like that but they always have additional length of sheet metal extending from the tubular section. Does anyone know if it’s possible to form just a small tube without additional material extending out? This tubing would be used for handles to lift something, similar to a handle bar on a bicycle or something.
I have only seen it done on a continuous basis . Flat stock is pulled through a few dies then final rollers press the two edges together to make a weld ( usually an ERW , electric resistance weld ). Most steel pipe up to about 24" diameter is made this way. Small tubing , like 1 ", is made that way. But some small tubing is made by starting with 4 " pipe and cold drawing down to the desired size.