Column Diameter | Bottom Shaft Dia | Top Shaft Dia | Bead Width | Cut At Bead Loss | First Ring | Minimum Wall Thickness | Available Lengths (feet) |
| (A) | (B) | (C) | (D) | (E) | | |
6” | 6” | 4-3/4” | 3/4” | 4-1/4” | - | 3/8” | 8, 9 |
8” | 7-1/2” | 6-3/8” | 3/4” | 4-5/16” | - | 3/8” | 8, 9, 10 |
10” | 9-1/2” | 8-1/4” | 3/4” | 5” | - | 3/8” | 8, 9, 10, 12 |
12” | 11-1/2” | 9-11/16” | 3/4” | 6-1/4” | - | 3/8” | 8, 9, 10, 12, 14, 16, 18 |
14″ | 13-1/2” | 11-1/2” | 1” | 7-1/2″ | 4-1/4″ | 1/2″ | 8, 9, 10, 12 (more below) |
14” | 13-7/8” | 11-7/8” | 1-3/16” | 6-3/4” | 4-1/8″ | 1/2” | 14, 16, 18, 20, 22 |
16″ | 15-5/8″ | 13-1/2″ | 1-1/4″ | 8″ | 4-3/4″ | 1/2″ | 8, 9, 10, 12, 14 (more below) |
16” | 15-7/8” | 13-1/4” | 2-1/8” | 7-1/2” | 4-3/4″ | 1/2” | 16, 18, 20 |
18” | 17-11/16” | 14-7/8” | 1-7/8” | 8-7/8” | 5-1/8″ | 1/2” | 8, 9, 10, 12, 14, 16, 18, 20, 22 |
20” | 19-3/4” | 17” | 1-7/8” | 9-7/16” | 5-5/8″ | 1/2” | 8, 9, 10, 12, 14, 16, 18, 20, 22 |
22” | 21-7/8” | 18-1/4” | 2-1/16” | 11-3/16” | 6-1/2″ | 5/8” | 8, 9, 10, 12, 14, 16, 18, 20, 21 |
24” | 23-1/2” | 19-3/4” | 2” | 12-3/8” | 7-1/2″ | 5/8” | 8, 9, 10, 12, 14, 16, 18, 20, 22, 24 |
28” | 27-5/8” | 23” | 2-1/8” | 12-3/4” | 8-1/16″ | 5/8” | 8, 9, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28 |
30” | 30-1/8” | 25-1/4” | 1-1/2” | 13-3/4 | 8-3/4″ | 3/4” | 8, 9, 10, 12, 14, 16, 18, 20, 22, 24, 26 |
36” | 36-1/2” | 31” | 2-1/8” | 19-3/8” | 10-3/4″ | 1” | 8, 9, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30 |
42” | 42” | 36-5/8” | 3” | 22-1/4” | | 1-1/4” | 8, 9, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30 |