SORF

Flanges » JIS Standard » 20 K » SORF

Nominal Pipe Size Outside Dia. (mm) Dia. of Bolt Circle (mm) Dia. of Holes (mm) Number of Holes Dia. of Bore Dia. of Raised Face (mm) Height of Raised face (mm) Thickness min. (mm) Dia. of Hub at Large End (mm) Dia of Hub at Small End (mm) Length Thru. Hub (mm) Radius of Fillet at Base of Hub (mm) Approx. Weight (KG)
A D C h do G f t M N H R
3/8" 10 90 65 15 4 17.8 46 1 14 32 30 20 4 0.58
1/2" 15 95 70 15 4 22.2 51 1 14 36 34 20 4 0.65
3/4" 20 100 75 15 4 27.7 56 1 16 42 40 22 4 0.81
1" 25 125 90 19 4 34.5 67 1 16 50 48 24 4 1.27
1.1/4" 32 135 100 19 4 43.2 76 2 18 60 56 26 5 1.58
1.1/2" 40 140 105 19 4 49.1 81 2 18 66 62 26 5 1.68
2" 50 155 120 19 8 61.1 96 2 18 80 76 26 5 1.89
2.1/2" 65 175 140 19 8 77.1 116 2 20 104 100 30 5 2.73
3" 80 200 160 23 8 90.0 132 2 22 117 113 34 6 3.85
3.1/2" 90 210 170 23 8 102.6 145 2 24 130 126 36 6 4.47
4" 100 225 185 23 8 115.4 160 2 24 142 138 36 6 5.03
5" 125 270 225 25 8 141.2 195 2 26 170 166 40 6 7.94
6" 150 305 260 25 12 166.6 230 2 28 202 196 42 6 10.4
7" 200 350 305 25 12 218.0 275 2 30 252 244 46 6 13.1
8" 250 430 380 27 12 269.5 345 2 34 312 304 52 6 23.1
9" 300 480 430 27 16 321.0 395 3 36 364 354 56 8 27.2
10" 350 540 480 33 16 358.1 440 3 40 408 398 62 8 38.4
12" 400 605 540 33 16 409 495 3 46 456 446 70 10 53.9
14′ 450 675 605 33 20 460 560 3 48 514 504 78 10 71.0
16" 500 730 660 33 20 511 615 3 50 568 558 84 10 84.6
18" 550 795 720 39 20 562 670 3 52 622 612 90 10 102
20" 600 845 770 39 24 613 720 3 56 676 666 96 10 115
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