its clear flex pipe with fiber reinforcing, I'm not a plumber so I don't really know the name. Its similar to the stuff they use in radiant flooring.

I drive for Mark Whitehead... We hauled woodchips from Olney to Missoula, but they moved the chipper to a job in the woods near Libby ad we didn't get the haul, so now were down to hauling raw bark from Plum Creek and Stoltze to Superior. Only problem is, nobody (including me) wants to haul bark with these cold temps. We can spray our trailers down with antifreeze, but when it's this cold, it doesn't work too good with raw bark and he doesn't pay me to dig out my trailer:roll:.
If you drive the lowboy, do you drive that high hood T-800? I drive a 4 axle 2001 Peterbilt 379 short hood with a 48 inch sleeper and a Canadian spread on the drive axles... white in color with reddish orange fenders"thumbsup" I've probably run across you a few times on the road and at Mike's in C Falls....

I drive all the lowboys, and the rolldecks too, we don't really have assigned trucks, we all move around depending on whats goin' on and what the job at hand is. so yeah I drive the blue KW, sometimes anyway, mostly I am in either a white Aeromax with the double drop trailking, or the white Ford with the flatdeck trailking trailer. But as you said I am sure we pass each other. I drive outta the CF store.