DIMENSIONAL DATA
RING TYPE JOINTS OVAL OCTAGONAL
ASME B16.20 and API 6A
Style R
PRESSURE CLASS RATINGS PITCH WIDTH HEIGHT OF RING APPROX DIST.
RING DIA. OF RING BETWEEN
ASME B16.5 & ASME B16.47 SERIES A API 6A (psi) OVAL OCTAG
NUMBER OF RING MADE UP
150 300/600 900 1500 2500 2000 3000 5000 FLANGES
P A B H
NOMINAL PIPE SIZES ±0.18 ±0.20 ±0.50 ±0.50 (mm)
R 58 - - - 12 - - - - 381.00 22.23 28.7 26.9 -
R 59 14 - - - - - - - 381.88 7.95 14.2 12.7 -
R 60 - - - - 12 - - - 406.40 31.75 39.6 38.1 -
R 61 - 14 - - - 14 14 - 419.10 11.13 17.5 16.0 -
R 62 - - 14 - - - - - 419.20 15.88 22.4 20.6 -
R 63* - - - 14 - - - - 419.00 25.40 33.3 31.8 5.6
R 64 16 - - - - - - - 454.03 7.95 14.2 12.7 -
R 65* - 16 - - - 16 - - 469.90 11.13 17.5 15.9 4.8
R 66* - - 16 - - - 16 - 469.90 15.88 22.4 20.6 4.1
R 67 - - - 16 - - - - 517.53 28.58 36.6 35.1 -
R 68 18 - - - - - - - 533.40 7.95 14.2 12.7 -
R 69* - 18 - - - 18 - - 533.40 11.13 17.5 15.9 4.8
R 70* - - 18 - - - 18 - 533.40 19.05 25.4 23.9 4.8
R 71 - - - 18 - - - - 533.40 28.58 36.6 35.1 -
R 72 20 - - - - - - - 558.80 7.95 14.2 12.7 -
R 73* - 20 - - - 20 - - 584.20 12.70 19.1 17.5 3.3
R 74* - - 20 - - - 20 - 584.20 19.05 25.4 23.9 4.8
R 75 - - - 20 - - - - 584.20 31.75 39.6 38.1 -
R 76 24 - - - - - - - 673.10 7.95 14.2 12.7 -
R 77 - 24 - - - - - - 692.15 15.88 22.4 20.6 -
R 78 - - 24 - - - - - 692.15 25.40 33.3 31.8 -
R 79 - - - 24 - - - - 692.15 34.93 44.5 41.4 -
R 80 22 - - - - - - - 615.95 7.95 - 12.7 -
R 81 - 22 - - - - - - 635.00 14.30 - 19.1 -
R 82* - - - - - - - - 57.15 11.13 - 15.9 4.8
R 84* - - - - - - - - 63.50 11.13 - 15.9 4.8
R 85* - - - - - - - - 79.38 12.70 - 17.5 3.3
R 86* - - - - - - - - 90.50 15.88 - 20.6 4.1
R 87* - - - - - - - - 100.03 15.88 - 20.6 4.1
R 88* - - - - - - - - 123.83 19.05 - 23.9 4.8
R 89* - - - - - - - - 114.30 19.05 - 23.9 4.8
R 90* - - - - - - - - 155.58 22.23 - 26.9 4.8
R 91* - - - - - - - - 260.35 31.75 - 38.1 4.1
R 92 - - - - - - - - 228.60 11.13 17.5 16.0 -
R 93 - 26 - - - - - - 749.30 19.05 - 23.9 -
R 94 - 28 - - - - - - 800.10 19.05 - 23.9 -
R 95 - 30 - - - - - - 857.25 19.50 - 23.9 -
R 96 - 32 - - - - - - 914.40 22.23 - 26.9 -
R 97 - 34 - - - - - - 965.20 22.23 - 26.9 -
R 98 - 36 - - - - - - 1022.35 - 22.23 - -
R 99* - - - - - 8? 8? - 234.95 11.13 - 15.9 4.8
R 100 - - 26 - - - - - 749.30 28.58 - 35.1 -
R 101 - - 28 - - - - - 800.10 31.75 - 38.1 -
R 102 - - 30 - - - - - 857.25 31.75 - 38.1 -
R 103 - - 32 - - - - - 914.40 31.75 - 38.1 -
R 104 - - 34 - - - - - 965.20 34.93 - 38.1 -
R 105 - - 36 - - - - - 1022.35 - 34.93 - -
NOTES
a) R30 Ring Type Joint used for lapped joint only.
Dimensions in mm. Figures stated are for information only. Please refer to the current version of the original standards for dimensional information.
Tolerances: A = width of ring +/-0.20. B, H = height of ring, +1.3, -0.5. Variation in height throughout the entire circumference of any given ring shall not exceed 0.5 within these tolerances 7.
P = average pitch diameter of ring +/-0.18. R1 = radius in ring +/-0.5. 23 deg = angle +/-0 deg 30 min
