Now I've got back the parts would be welded, I can't weld himself so Anders helped me with it. Now both barrels in place and the lid one part to go down the pipe is tillslipat so they fit.
What remains now to fix is to drill holes in the lid and screw the knobs as well as to drill air holes in the lower bottom insert. I will also drill small holes in the bottom and top edges of the tube and then thread them and put in small stop screws then will keep the two lids in place.
A dense wire mesh should also be attached 1 cm from the bottom.