My shop has 3/4 drywall on the walls and 1/2 drywall on the ceilings. When it came time to run my 6" pipe I found a really cool idea on Bill Pentz's website. He came across these cool little plastic mounts made by 3M, they are about one inch long by about 1/2" wide and have a place in the center to drive a 2" drywall screw the mount, then there are two slots in the mount that allow for the large 24" zip ties to be snugged around the pipe holding the pipe very close and tight to the mount. These mounts can be found at most professional electrial part stores. They come 100 to a bag, but I will say they are a little pricey, I bought 2 bags (200 total) for about 25.00 then the price of 2 bags of ties I want to say I had about 50.00 total in ties and mounts, but I have to say it is a very secure way to mount dust collection pipe and even easier to take down if the need arises, just cut the wire tie.
The mounts are part number or DCI # is 054007-06299.
Hope this helps.
Denny