Lead is not automatically in zinc, its part of the smelt process it was used to settle impurities to the bottom during hot dip then also helps clean them out of the kettles.
No galvanized pipe in the usa manufactured after 1986 has lead in it.
Zinc thats lead free is used in many many applications.
You indicated that using galvanized pipe for end posts was a bad idea because of the lead content.....
Its unlikely to be an issue....
I will agree that using lead pipe would be a horrible idea.....for several reasons....but i doubt anyone would try it and be very successful and tensioning so its likley a mute point......
No galvanized pipe in the usa manufactured after 1986 has lead in it.
Zinc thats lead free is used in many many applications.
You indicated that using galvanized pipe for end posts was a bad idea because of the lead content.....
Its unlikely to be an issue....
I will agree that using lead pipe would be a horrible idea.....for several reasons....but i doubt anyone would try it and be very successful and tensioning so its likley a mute point......