PIPE REINFORCING FOR FULL VACUUM SERVICE @200°C
STAINLESS STEEL I.D.PIPE

Wall thickness Stiffener Rings
I.D. Unstiffened Stiffened Spacing (L) Angle Size Bar size
1-1/2 14 GA
(0.078®)
14 GA
(0.078®)
2 14 GA
(0.078®)
14
GA (0.078®)
2-1/2 14 GA
(0.078®)
Not Required
3 14 GA
(0.078®)
14
GA (0.078®)
4 14 GA
(0.078®)
14
GA (0.078®)
6 14 GA
(0.078®)
14
GA (0.078®)
8 12 GA (0.109®) 14 GA (0.078®) 80 1 x 1 x 1/4 1-1/2 x 1/4
10 12 GA
(0.109®)
12
GA (0.109®)
Not Required
12 11 GA (0.125®) 12 GA (0.109®) 120 1 x 1 x 1/4 1-1/2 x 1/4
14 10 GA (0.140®) 11 GA (0.125®) 120 1 x 1 x 1/4 1-1/2 x 1/4
16 3/16 (0.187®) 11 GA (0.125®) 80 1-1/2 x 1-1/2 x 3/16 2 x 3/16
18 3/16 (0.187®) 11 GA (0.125®) 60 1-1/2 x 1-1/2 x 3/16 2 x 3/16
20 1/4 (0.250®) 11 GA (0.125®) 60 1-1/2 x 1-1/2 x 1/4 2 x 1/4
24 1/4 (0.250®) 3/16 (0.187®) 120 2 x 2 x 1/8 2 x 5/16
26 1/4 (0.250®) 3/16 (0.187®) 120 2 x 2 x 3/16 2 x 5/16
30 5/16 (0.312®) 3/16 (0.187®) 80 2 x 2 x 3/16 2 x 3/8
36 3/8 (0.375®) 1/4 (0.250®) 120 2-1/2 x 2-1/2 x 3/16 2-1/2 x
3/8
42 1/4
(0.250®)
120 2-1/2 x
2-1/2 x 1/4
3
x 1/4
48 1/4
(0.250®)
110 2-1/2 x
2-1/2 x 1/4
3 x 1/4
54 1/4
(0.250®)
80 3 x 3 x
1/4
4 x 1/4

NOTES:

  1. Minimum total weld length on each side of stiffener not less than half circumference.
  2. All dimensions are given in inches.