I don't have a 3/4 pipe to check, but I did measure the hook and it might fit but might be tight.
By Joan Strong on April 10, 2018
No
The inside of the hook measures 0.744 in. and the outside of the 3/4 in. pipe measures 1.050 in. O.D.
It will not fit over 1/2 in. pipe, which has an O.D. of 0.840.
By johnnyg on April 10, 2018