Normal
I suspect that when Altman moved their shop from Yonkers to Denver in 2020, their supply chain changed a bit.If you don't need to stack the bases, I've used some shop-fabricated units made from plate steel and 2" pipe (the 2" pipe is a socket for the 1-1/2" pipe, and a pair of bolts locks everything together) that were much nicer than any of the threaded bases I've used. IIRC, it was 3/8" plate, and there were gusset plates on the pipe socket as well.If you need something less heavy-duty, it wouldn't be difficult to bolt a speedrail flange to a plate (or a truss base).
I suspect that when Altman moved their shop from Yonkers to Denver in 2020, their supply chain changed a bit.
If you don't need to stack the bases, I've used some shop-fabricated units made from plate steel and 2" pipe (the 2" pipe is a socket for the 1-1/2" pipe, and a pair of bolts locks everything together) that were much nicer than any of the threaded bases I've used. IIRC, it was 3/8" plate, and there were gusset plates on the pipe socket as well.
If you need something less heavy-duty, it wouldn't be difficult to bolt a speedrail flange to a plate (or a truss base).
