galvanized hot water pipe is dripping

hello

i have a small dripping spot on a free hot water pipe (1 inch!) in the basement. i removed the insulation because it had brown spots for quite some time. this spot is about 5cm next to a screwed 90-degree elbow.

my first question would be: pipe clamp or cut open?

my second question is if i insert 20 cm of pipe, how do i reconnect the connection on the cut-open side with a new screw connection. i then have the new pipe with thread and the old cut pipe with thread and 2-3 cm space in between. what kind of variable screw connection solution exists for that?

thank you very much for a practical tip
tomes

I would say if you already have to ask about such basic things, then you better let a professional handle it.

just tell me something productive or just stay out of it.

thank you very much!

... malleable iron clamp connectors with internal thread?

Would you do it like that?

I have now ordered a gebo hose clamp. This is a spot about the size of a 10 cent coin. And in the middle, it drips slightly. The hose clamp is exactly the appropriate solution there. In principle, I already know how the pipes look inside. At the neighbor who bought a house of the same construction year `63, the pipes were half clogged.