I am removing an internal wall which has a radiator attached. It is 10mm inverted pipe circuit (ie both the heated water pipe and the return pipe come down from the ceiling). I can remove the radiator easily but I must also remove the pipes to fit the doorway. I can cut them at the top but I cannot find in the DIY shops anytyhing that would close the pipe ends. I shall appreciate any advice with regard to achieving this. I am okay with the wall removal and regulations covering it.