pipe hangers 1" copper

I was over my parent's place this weekend and my dad sent me down to the basement to checkout their pipe hangers. It turns out that the majority of the plastic J pipe hangers holding the heating pipes up are broken. The heat pipes are mostly 1" and make about a 70 foot run (long long ranch). There are three zones, so three feeds and three returns. What's the best type of hanger to use on these that won't break? The zones were put in in 1993, so the hangers aren't that old.

Thanks,
Gil

There are several "metal" hanger types that would work.

Cheap
http://www.hvac-runner.com/Wire-Pipe-Hook-79.html

Inexpensive but more durable than first
http://www.hvac-runner.com/Milford-Hanger-89.html

Good but won't work if you have much of a drop
http://www.hvac-runner.com/CTS-Bell-Hanger-80.html

Probably strongest, you just attach to threaded rod cut to size, so the drop can be short or very long
http://www.hvac-runner.com/Split-Ring-Hanger-2-83.html

The Milfords are probably "overkill", and the wire hooks, especially if you get the ones with a plastic coating, are more than adquate and much easier and faster to install.

Want pipe hanger? go to the lumber yard dumpster and use the green plastic banding. Stronger than steel and no di-electrric issue.