Columbus tubing question

[raidan73]

Sorry if this is a daft question but can anyone tell me the difference between:

A) Columbus Zonal
B) Columbus Altec 2
C) Columbus Airplane tubing

I'm trying to date my Kona Kona frameset but am finding conflicting stories re the tubing used.

Thanks in advance

 

[foz]

I'm not sure about zonal, but I'm pretty certain that airplane was just altec2 with a different profile.

 

[danson67]

Plenty of shape and diameter info at Ceeway:
http://www.framebuilding.com/Columbus Tubing.htm

All the best,