Bill, as you already seem to understand, since sand is primarily silicon it's essentially a non-conductive material.
Maybe worth a try.
I didn't know that, actually. But I also didn't know Static-guard existed. That's a clever idea and seems like something I could get some use out of. My house seems to make enough static electricity in the winter to spin the meter backwards.
@lehighline hopefully I can find something with the same ID and wall thickness. I'm not so sure SCH40 PVC carries the same wall thickness as SCH40 metal pipes. It should carry the same ID though. Regardless, this or Static Guard will surely get me by.
That only leaves the screw I was going to use to move the sand through the pipe. I have to squeeze that pipe through a helix in the track to get it to a coal mine so it won't slope enough for sand to run down it. But maybe the plastic screw won't generate any static. I'm not sure how it that would work. Possibly a metal pipe and then spray the screw with Static guard?