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        JIS Series
 Standard No.  Diameter Range  Pressure Rating  Conventional Materials
 JIS B2220 PL  DN10~DN400  5K  JIS G3214
 SUS F304
 SUS F304L
 SUS F316
 SUS F316L
 SUS F310
 SUS F321
 JIS B2220 SO  DN450~DN1000  5K
 JIS B2220 PL  DN10~DN225  10K
 JID B2220 SO  DN250~DN1000  10K
 JIS B2220 SO  DN10~DN1200  16K 20K 30K
 JIS B2220 WN  DN15~DN400  30K
 JPI 7S-15  1/2~24"  CLASS 150 300 600 900 1500 2500

KS B1503 JIS B2220 5K

Unit:mm

Nominal
Bore of
Flange 

Outside
Dia. of
Steel
pipe 

Inside
Dia. of
Flange
do 

Outside
Dia. of
Flange
D 

Sectional Dimensions of Flange

Bolt Hole 

Nominal
Bolt
Size 

Weld
Length
(Reference) 

Approx
Weight
(Kg) 

t 

T 

Dia. of Hub 

Radius
r 

Raised
Face
f 

Dia. of
Raised
Face
g 

Dia. of
Bolt
Circle
c 

Number
of
Bolt
Holes 

Hole
Dia.
h 

a 

b 

W1 

W2 

10 17.3 17.8 75 9         1 39 55 4 12 M10 5 2.5 0.27
15 21.7 22.2 80 9         1 44 60 4 12 M10 5 3 0.3
20 27.2 27.7 85 10         1 49 65 4 12 M10 5 3 0.37
25 34 34.5 95 10         1 59 75 4 12 M10 5 3 0.45
32 42.7 43.2 115 12         2 70 90 4 15 M12 6 3 0.78
40 48.6 49.1 120 12         2 75 95 4 15 M12 6 3 0.83
50 60.5 61.1 130 14         2 85 105 4 15 M12 6 3 1.07
65 76.3 77.1 155 14         2 110 130 4 15 M12 6 4 1.49
80 89.1 90 180 14         2 121 145 4 19 M16 6 4 1.99
(90) 101.6 102.6 190 14         2 131 155 4 19 M16 6 4 2.09
100 114.3 115.4 200 16         2 141 165 8 19 M16 7 4 2.39
125 139.8 141.2 235 16         2 176 200 8 19 M16 7 4 3.23
150 165.2 166.6 265 18         2 206 230 8 19 M16 7 5 4.41
(175) 190.7 192.1 300 18         2 232 260 8 23 M20 7.5 5 5.51
200 216.3 218 320 20         2 252 280 8 23 M20 8.5 6 6.33
(225) 241.8 243.7 345 20         2 277 305 12 23 M20 9 6 6.64
250 267.4 269.5 385 22         2 317 345 12 23 M20 10 6 9.45
300 318.5 321 430 22         3 360 390 12 23 M20 10 6 10.3
350 355.6 358.1 480 24         3 403 435 12 25 M22 12 7 14
400 406.4 409 540 24         3 463 495 16 25 M22 12 7 16.9
450 457.2 460 605 24 40 495 500 5 3 523 555 16 25 M22 12 7 24.8
500 508 511 655 24 40 546 552 5 3 573 605 20 25 M22 12 7 26.9
(550) 558.8 562 720 26 42 597 603 5 3 630 665 20 27 M24 12 7 34.1
600 609.6 613 770 26 44 648 654 5 3 680 715 20 27 M24 12 7 37.5
(650) 660.4 664 825 26 48 702 708 5 3 735 770 24 27 M24 12 7 42.8
700 711.2 715 875 26 48 751 758 5 3 785 820 24 27 M24 12 7 45.4
(750) 762 766 945 28 52 802 810 5 3 840 880 24 33 M30 12 7 57.4
800 812.8 817 995 28 52 854 862 5 3 890 930 24 33 M30 13 8 60.8
(850) 863.6 868 1045 28 54 904 912 5 3 940 980 24 33 M30 13 8 63.5
900 914.4 919 1095 30 56 956 964 5 3 990 1030 24 33 M30 13 8 75.3
1000 1016 1021 1195 32 60 105 1066 5 3 1090 1130 28 33 M30 14 9 88.5
*(1100) 1117.6 1123 1305 32         3 1200 1240 28 33 M30      
*1200 1219.2 1225 1420 34         3 1305 1350 32 33 M30      
*1350 1371.6   1575 34         3 1460 1505 32 33 M30      
*1500 1524   1730 36         3 161 1660 36 33 M30      

1.Flanges of parenthesized nominal diameter had better not be used.
2.The facing of flanges shall conform to KS B1519(JIS B2202-1984).
3.Nominal diameter over 1000 is manufacturer's standard(*).


KS B1503 JIS B2220   10K
Unit:mm

Nominal
Bore of
Flange 
Outside
Dia. of
Steel
pipe 
Inside
Dia. of
Flange
do 
Outside
Dia. of
Flange
D 
Sectional Dimensions of Flange Bolt Hole  Nominal
Bolt
Size 
Weld
Length
(Reference) 
Approx
Weight
(Kg) 
t  T  Dia. of Hub  Radius
r
Raised
Face
f
Dia. of
Raised
Face
g 
Dia. of
Bolt
Circle
c 
Number
of
Bolt
Holes 
Hole
Dia.
h 
a b W1 W2 
10 17.3 17.8 90 12         1 46 65 4 15 M12 5 2.5 0.52
15 21.7 22.2 95 12         1 51 70 4 15 M12 5 3 0.57
20 27.2 27.7 100 14         1 56 75 4 15 M12 5 3 0.73
25 34 34.5 125 14         1 67 90 4 19 M16 5 3 1.13
32 42.7 43.2 135 16         2 76 100 4 19 M16 6 3 1.48
40 48.6 49.1 140 16         2 81 105 4 19 M16 6 3 1.56
50 60.5 61.1 155 16         2 96 120 4 19 M16 6 3 1.88
65 76.3 77.1 175 18         2 116 140 4 19 M16 6.5 4 2.6
80 89.1 90 185 18         2 126 150 8 19 M16 6.5 4 2.61
(90) 101.6 102.6 195 18         2 136 160 8 19 M16 6.5 4 2.76
100 114.3 115.4 210 18         2 151 175 8 19 M16 7 4 3.14
125 139.8 141.2 250 20         2 182 210 8 23 M20 7.5 4 4.77
150 165.2 166.6 280 22         2 212 240 8 23 M20 8 5 6.34
(175) 190.7 192.1 305 22         2 237 265 12 23 M20 9 5 6.82
200 216.3 218 330 22         2 262 290 12 23 M20 9 6 7.53
(225) 241.8 243.7 350 22         2 282 310 12 23 M20 9 6 7.74
250 267.4 269.5 400 24 36 288 292 6 2 324 355 12 25 M22 10 6 12.7
300 318.5 321 445 24 38 340 346 6 3 368 400 16 25 M22 10 6 13.8
350 355.6 358.1 490 26 42 380 386 6 3 413 445 16 25 M22 12 7 18.2
400 406.4 409 560 28 44 436 442 6 3 475 510 16 27 M24 12 7 25.2
450 457.2 460 620 30 48 496 502 6 3 530 565 20 27 M24 14 8 33
500 508 511 675 30 48 548 554 6 3 585 620 20 27 M24 14 8 37.6
(550) 558.8 562 745 32 52 604 610 6 3 640 680 20 33 M30 15 9 49.7
600 609.6 613 795 32 52 656 662 6 3 690 730 24 33 M30 16 10 52.6
(650) 660.4 664 845 34 56 706 712 6 3 740 780 24 33 M30 16 10 60.6
700 711.2 715 905 34 58 762 770 6 3 800 840 24 33 M30 17 10 70.6
 (750) 762 766 970 36 62 816 824 6 3 855 900 24 33 M30 18 11 85.8
800 812.8 817 1020 36 64 868 876 6 3 905 950 28 33 M30 19 12 91.2
(850) 863.6 868 1070 36 66 920 928 6 3 955 1000 28 33 M30 19 12 98.6
900 914.4 919 1120 38 70 971 979 6 3 1005 1050 28 33 M30 22 14 109
1000 1016 1021 1235 40 74 1073 1081 6 3 1110 1160 28 39 M36 22 14 133
*(1100) 1117.6 1123 1345 42 76       3 1220 1270 28 39 M36      
*1200 1219.2 1225 1465 44 78       3 1325 1380 32 39 M36      
*1350 1371.6   1630 48 82       3 1480 1540 36 45 M42      
*1500 1524   1795 50 90       3 1635 1700 40 45 M42      

1.Flanges of parenthesized nominal diameter had better not be used.
2.The facing of flanges shall conform to KS B1519(JIS B2202-1984).
3.Nominal diameter over 1000 is manufacturer's standard(*).
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