Arturo,
I will see what I can do for pictures.
I have measured the pipe that appears to be most like yours'.
I will describe and dimension using a shepherds hook as model.
The outside diameter is 33.3mm, long leg of hook is 533.4mm, out side to outside of hook is 190mm, short leg of hook is 163.5mm.
There is a threaded boss located 305mm from the end of the long leg.
Do these dimensions seem to match what you have?
Regards.
Bob