Cold Zinc Galvanizing

[Soundguy]

Soundguy, by band couplers, are you talking about using the type that have a compression ring, like Dresser fittings/couplers?
We used to use them out in the field in emergencies when we couldn't repair the threads, or had to torch cut the ends of the pipe.

more like this.

there are many other similar designs, some flat and uncorrugated, some flat and dimpled. etc.

http://www.menards.com/main/plumbin...-culvert/15-culvert-band-coupler/p-114437.htm

the dresser fittings you speak of we use when working on stuff like epoxy coated / steel water pipe.. etc. like 6" 8" etc.

 

[Reverser]

more like this.

there are many other similar designs, some flat and uncorrugated, some flat and dimpled. etc.

http://www.menards.com/main/plumbin...-culvert/15-culvert-band-coupler/p-114437.htm

the dresser fittings you speak of we use when working on stuff like epoxy coated / steel water pipe.. etc. like 6" 8" etc.

Ah-ha, yes! I got it now.