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俄法兰密封面GOST 12815-1980 ENG

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USSR STATE STANDARD

FLANGES FOR FITTINGS AND

PIPELINES

for Pnom from 0.1 to 20.0 Mpa

(from 1 to 200 kgf/cm)

GOST 12815-80

Official Edition

English Version Approved by Interstandard

STANDARDS PUBLISHING HOUSE

Moscow

GOST 12815-80

UDC 621.3.412:006.3 Group Г18

SSR STATE STANDARD

FLANGES FOR FITTINGS

AND PIPELINES

for Pnom from 0.1 to 20.0 МPa (from 1 to 200 kgf/cm2)

Types. Connecting dimensions and dimensions

of sealing surfaces

OKP (ALL-Union Product Classification Code) 37 9941

GOST 12815-80

(CMEA STANDARD

3249-81,

CMEA STANDARD

3250-81,

CMEA STANDARD

3251-81) In place of GOST 1233-67 and GOST 1234-67

Date of introduction set by Decree No. 2238, dated 20.05.80, of the USSR State Committee for Standards

From 01.01.83

Restriction of validity is removed by Gosstandart Decree No. 402, dated 15.04.92

1. This Standard applies to flanges for pipelines and fittings, and also to connecting flanges for fittings, machines, devices, branch pipes of devices and pressure tanks designed for nominal pressure Рnom from 0.1 to 20.0 MPa (from 1 up to 200 kgf/cm2) and medium temperature from 20 to 873 K (from -253 to 600 °С), and also to flanges with liners made from fluoroplastic-4 designed for nominal pressure Рnom from 0.1 to 20.0 MPa (from 1 to 200 kgf/cm2) and medium temperature from 73 to 473 K (from -200 to 200 °С), and may be used for their certification.

This Standard does not apply to flanges for pipelines of transport machines if these flanges are not designed for connection of fittings or general-duty devices, and also to flanges standardized in accordance with GOST 1536-76 and GOST 4433-76.

Official Edition Reprinting is prohibited

Revised Edition (December 1996) with Amendments Nos. 1, 2, 3, 4 and 5, approved in March 1983, December 1983, December 1987, September 19 and April 1992.

(IUS {Standards Information Catalog} 6-83, 3-84, 4-88, 12-, 7-92).

Correction is inserted (IUS {Standards Information Catalog} No. 11, 2005)

--``,`,``,,,`,,,`,`,,`,``,,,`,`-`-`,,`,,`,`,,`---

GOST 12815-80

The requirements of clauses 1 to 3; 5; 6 and 10 to 12 of this Standard are obligatory, other requirements are recommended.

(Amended Wording, Amendment No. 5).

2. Flange types and key parameters shall comply with those specified in table 1, the connecting dimensions, the dimensions and modifications of sealing surfaces shall comply with those specified in figs. 1 to 6 and in tables 2 to 11, except for dimensions of tenon-mortise sealing surfaces for fluoroplastic liners, which shall comply with those specified in fig. 6 and in table 12.

Table1

Nominal pressure Рnom, MPa

(kgf/cm2)

Cast from grey iron 0.1; 0.25 (1; 2.5)

0.6 (6)in accordance with GOST

1.0 (10)12817-80

1.6 (16)

Cast from malleable cast iron 1.6; 2.5; 4.0 (16; 25; 40) in accordance with GOST 12818-80

Cast from steel in accordance 1.6 (16)

2.5 (25)with GOST 12819-80

4.0 (40)6.3 (63)10 (100)16 (160)20 (200)

Steel, flat, welded 0.1; 0.25 (1; 2.5)

0.6 (6)in accordance with GOST

1.0(10)12820-80

1.6 (16)2.5 (25)

Steel, butt welded 0.1; 0.25; 0.6 (1; 2.5; 6)

1.0; 1.6; 2.5; 4.0 (10; in accordance with GOST

16; 25; 40)12821-80

6.3 (63)10 (100)16 (160)20 (200)0,1; 0,25; 0,6; 1,0; 1,6; Steel, loose, ring welded

2,5 (1; 2,5; 6; 10; 16; 25) in accordance with GOST

12822-80

Flange type

Nominal bore Dnom, mm

15 to 3 000 15 to 2 400 15 to 2 000 15 to 1 000 15 to 80 15 to 1 600 15 to 1 400 15 to 800 15 to 600 15 to 400 15 to 300 15 to 250 10 to 2 400 10 to 1 600 10 to 1 600 10 to 1 200 10 to 800 10 to 1 600

10 to 1 200

10 to 400; 500 to 1 20010to 400 15 to 300 15 to 250

10 to 500

GOST 12815-80

--``,`,``,,,`,,,`,`,,`,``,,,`,`-`-`,,`,,`,`,,`---

Modification 1 flange with

connecting projection

Version (square flange)

Lengthwise outline

n bores d

Fig. 1.

Modification 2

Modification 3 flange with projection

flange with deepening

n bores d

Fig. 2

GOST 12815-80

Modification 4 Modification 5 flange with tenon

flange with mortise

Fig. 3

Modification 6 Modification 7

flange for lens liner

flange for liner of oval section

Fig. 4

Fig. 5

--``,`,``,,,`,,,`,`,,`,``,,,`,`-`-`,,`,,`,`,,`---

GOST 12815-80

Modification 8

Modification 9

Fig. 6

Notes to figs. 1 to 6:

1. Processing of surfaces A with roughness Ra ≤ 100 microns is allowed.

2. Processing of surfaces Б with roughness Ra ≤ 25 microns with circular direction of irregularities is allowed.

3. It is allowed to carry out the rounding instead of ∟45 °.

--``,`,``,,,`,,,`,`,,`,``,,,`,`-`-`,,`,,`,`,,`---

GOST 12815-80

Pnom 0.1 and 0.25 MPa (1.0 and 2.5 kgf/cm)

Dimensions in mm

D3 Series 1 Series 2 Series 1 Nominal bore Dnom 10 15 20 25 32 40 50 65

Table2

D4 Series 2 Series 1 D5 Series 2 Series 1 D6 Series 2 Series 1 d Series 2 Series 1 n Series 2 Series 1 h

h1 Series 2 Series 1 h2 Series 2 B

Nominal diameter of bolts or studs

--``,`,``,,,`,,,`,`,,`,``,,,`,`-`-`,,`,,`,`,,`---D D1 D2

Series Series 1 2

75 50 35 20 19 30 29 19 18 31 30 80 55 40 25 23 35 33 24 22 36 34 90 65 50 32 33 46 43 31 32 47 44 100 75 60 39 41 53 51 38 40 52 120 90 70 49 49 63 59 48 48 60 130 100 80 56 55 70 69 55 71 70 140 110 90 69 66 83 80 68 65 84 81 160 130 110 86 103100

88 85 104101

14 14 4

4 4 11 11 2

60657075

4 3 95

100110125140155

18 18 8 8 1.5

3.5

М16

М12

М10

80 185 150 128 103 101117115102100118116100 205 170 148 123 117143137122116144138125 235 200 178 149 146169166148145170167150 260 225 202 176 171196191175170197192(175) 290 255 232 206 203226223205202227224200 315 280 258 231 229251249230228252250(225) 340 305 282 256 256276276255255277277250 370 335 312 286 283306303285282307304

12 12

GOST 12815-80

Table 2 (Cont.)

Dimensions in mm

D3 Series 1 Series 2 Series 1 Nominal bore Dnom

--``,`,``,,,`,,,`,`,,`,``,,,`,`-`-`,,`,,`,`,,`---D4 Series 2 Series 1 D5 Series 2 Series 1 D6 Series 2 Series 1 d Series 2 Series 1 n Series 2 Series 1 h

h1 Series 2 Series 1 h2 Series 2 B

Nominal diameter of bolts or studs

D D1 D2

Series Series 1 2

300 435 395 365 336 336356356335335357 3574.53.5

12 12 350 485 445 415 381 38074063803808 407

4 5 4 М20 400 535 495 465 431 435745304358 45722 22 16

16 (450) 590 550 520 481 4507509480488508 510

5 4 500 0 600 570 531 15575615300558 562

600 755 705 670 631 635657661630634658 66220

26 26 М24

6 5 (700) 860 810 775 736 737762763735736763 7

24 24 800 975 920 880 841 841867867840840868 868

(900) 1075 1020 980 1000 1175 1120 1080 28 28 5 —

1200 1375 1320 1280 32 32 30 30 М27

1400 1575 1520 1480 36 36 1600 1785 1730 1690 40 40 (1800) 1985 1930 10 44 44 — — — — — — — — — — — — 2000 2190 2130 2090 48 48 (2200) 2405 2340 2295 52 52 33 33 56 56 М30 2400 2605 20 2495 (2600) 2805 2740 2695 60 60 6 (2800) 3035 2960 2910 36 39 M33

3000 3240 3160 3110 68 68 М20

М24

М27

М30 М36

Pnom 0.6 MPa (6 kgf/cm2) Dimensions in mm

Series 1 Series 2 Nominal bore

GOST 12815-80

TableЗ

D D1 D2

Series 1 D3 Series 2 Series 1 D4 Series 2 Series 1 D5 Series 2 Series 1 D6 Series 2 Series 1 d Series 2 Series 1 п Series 2 h

Series 1 h2 Series 2 B

Nominal diameter of bolts or studs

Series Series 1 2 6065

--``,`,``,,,`,,,`,`,,`,``,,,`,`-`-`,,`,,`,`,,`---10 15 20 25 32 40 50

75 50 35 20 19 30 29 19 18 31 30 2

80 55 40 25 23 35 33 24 22 36 34 11 11 90 65 50 32 33 46 43 31 32 47 44 100 75 60 39 41 53 51 38 4 52 120 90 70 49 49 63 59 48 48 60 130 100 80 56 55 70 69 55 71 70 14 14 140 110 90 69 66 83 80 68 65 84 81 88 85 104101

7075

4 3 95

100110

125140

155

M10 M10 4 4 М12 М12

65 160 130 110 86 103100

12 12 18 18 3

8 8 4.5

3.5

М16 —

М16

Nominal bore Dnom

Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 D D1 D2 h

Series 2 300 435 395 365 336 3363563563353353573574.53.5

12 12 350 485 445 415 381 38074063803808407

4 5 4 М20 400 535 495 465 431 43574530435845722 22 16

16 (450) 590 550 520 481 4507509480488508510

5 4 500 0 600 570 531 15575615300558562

600 755 705 670 631 63565766163063465866220

26 26 М24 6 5 (700) 860 810 775 736 7377627637357367637

24 24 800 975 920 880 841 841867867840840868868

30 30 (900) 1075 1020 980 —М27

1000 1175 1120 1080 28 28

1200 1400 1340 1295 33 32 32 М30

33 36 1400 1620 1560 1510 36 5 36 М33

1600 1820 1760 1710 40 40 — — —— — — — — — — — — (1800) 2045 1970 1920 39 39 44 44 М36

2000 2265 2180 2125 48 48 (2200) 2475 2390 2335 52 М39 42 45 52 2400 2685 2600 25 56 56 6

--``,`,``,,,`,,,`,`,,`,``,,,`,`-`-`,,`,,`,`,,`---GOST 12815-80

Table 3 (Cont.)

Dimensions in mm

Series 1Series 2

Nominal diameter of bolts or studs

М20

М24 М27

М30 М36 М42

Рnom 1.0 MPa (10 kgs/cm2) Dimensions in mm

Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 D

Series 2 Nominal bore Dnom

GOST 12815-80

Table4

D3 D4 D5 D6 d п h1 h2

Nominal diameter of bolts or studs

Series 1Series 2 7075

10 90 60 42 24 34 23 35 15 95 65 47 29 39 28 40 14 14 20 105 75 58 36 50 35 51 25 115 85 68 43 57 42 58 32 135 100 78 51 65 50 66 40 145 110 88 61 75 60 76 50 160 125 102 73 87 72 88 18 18 65 180 145 122 95 109 94 110 80 195 160 133 106 120 105 121 100 215 180 158 129 149 128 150 125 245 210 184 155 175 1 176 150 280 240 212 183 203 182 204 (175) 310 270 242 213 233 212 234 22 22 200 335 295 268 239 259 238 260 (225) 365 325 295 266 286 265 287 250 390 350 320 292 312 291 313 12 12 8

4.5

8090

М12 М12

4 4 3 105

110125140150

М16

—

М20

GOST 12815-80

Table 4 (Cont.)

Dimensions in mm

Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 D

Series 2 Nominal bore Dnom

D3 D4 D5 D6 d n h1 h2

Nominal diameter of bolts or studs

Series 1Series 2

М20

300 440 400 370 343 363 342 3 12 12 4.53.5

22 22 М20

350 500 460 430 395 421 394 422 16 16 4 5 4 400 565 515 482 447 473 446 474 (450) 615 565 532 497 523 496 524 26 26 500 670 620 585 9 575 8 576 600 780 725 685 9 6516756778650676678(700) 5 840 800 751 751777777750750778778800 1010 950 905 856 851882877855850883878(900) 1110 1050 1005 1000 1220 1160 1110 1200 1455 1380 1330 1600 1915 1820 1750 (1800) 2115 2020 1950 2000 2325 2230 2150 20 20 5

М27 М24

М24

30 30 24 24 33

28 28 М27 М30 М30 М36 М42 М48

—

М30 М33 М36

36 5

39 39 32 32 —

1400 1675 1590 1530 — — — — 42 45 36 36 40 40 48 52 44 44 48 48 — ——М39 М45

Рnom 1.6 MPa (16 kgs/cm2) Dimensions in mm

Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 D

Series 2 Nominal bore Dnom

GOST 12815-80

Table5

D3 D4 D5 D6 d п h1 h2

Nominal diameter of bolts or studs

Series

Series 1 1

4.5

70758090

4 4 3 105

110125140М16 150

М16

М12

—

М20 М20

М24 М24

Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1Series 2 D D1 D2

Series 1 Nominal bore Dnom

300 460 410 370 343 363 342 3 12 12 4.53.5

26 26 М24

350 520 470 430 395 421 394 422 16 16 4 5 4 400 580 525 482 447 473 446 474 30 30 М27

(450) 0 585 532 497 523 496 524 20 20 500 710 650 585 9 575 8 576 33 33 600 840 770 685 9 6516756778650676678(700) 910 840 800 751 751777777750750778778800 1020 950 905 856 851882877855850883878(900) 1120 1050 1005 1000 1255 1170 1110 36

39 39

28 28 5

42 45 — — —— 24 24 5

М30

1200 1485 1390 1330 — — — — 32 32 48 52 1400 1685 1590 1530 36 36 1600 1925 1820 1750 56 56 40 40

--``,`,``,,,`,,,`,`,,`,``,,,`,`-`-`,,`,,`,`,,`---GOST 12815-80

Table 5 (Cont.)

Dimensions in mm

D3 D4 D5 D5 d п

h1 h2

Nominal diameter of bolts or studs

Series

Series 2 1

М24 М27 М30

—

М33

М36

М36 М39 М45 М52

М42 М48 М52

Pnom 2.5 MPa (25 kgs/cm2) Dimensions in mm

Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Nominal bore Dnom

GOST 12815-80

Table6

D4 D5 D6 d h1

n h h2

10 90 60 42 24 15 95 65 47 29 34 39 23 28 35 40 2

14 14 20 105 75 58 36 50 35 51 25 115 85 68 43 57 42 58 32 135 100 78 51 65 50 66 40 145 110 88 61 75 60 76 50 160 125 102 65 180 145 122 73 95

87 109 120 149 175 203 233 259 286 312 72 94 105 128 1 182 212 238 265 291 88 18 18 110 121 150 22 22 176 204 234 260 287 313 30 30 26 26 12 8

4 3 105

110125

М20

—

4.5

3.5

М27

М24

М24 М20

М16

80 195 160 133 106 100 230 190 158 129 125 270 220 184 155 150 300 250 212 183 (175) 330 280 242 213 200 360 310 278 239 (225) 395 340 305 266 250 425 370 335 292

--``,`,``,,,`,,,`,`,,`,``,,,`,`-`-`,,`,,`,`,,`---Nominal diameter

of bolts or studs

Series 1Series 2 70758090

М12

Dimensions in mm

Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Nominal bore

D D1 D2

D3 D4 D5 D6 d

n h

300 485 430 390 343 363 342 3 30 30 350 550 490 450 395 421 394 422 33 400 610 550 505 447 473 446 474 36 (450) 660 600 555 497 523 496 524 500 730 660 615 9 575 8 576 600 810 770 720 9 6516756778650676678(700) 960 875 820 751 751777777750750778778800 1075 990 930 856 851882877855850883878(900) 1185 1090 1030 1000 1315 1210 1140 1400 1750 10 1560 39

39 20

4 5 4 M33

— — — — М52 М56

42 45 24 48

28 32 36

56 56 1200 1525 1420 1350 — — — — 62 62

--``,`,``,,,`,,,`,`,,`,``,,,`,`-`-`,,`,,`,`,,`---GOST 12815-80

Table 6 (Cont.)

h1 h2

B Nominal diameter of

bolts or studs Series 1Series 2 М27

М27 М30 М36

4.53.5

M30 —

М36 М39 М45

М42 М48 М52 М56

Pnom 4.0 MPa (25 kgf/cm2) Dimensions in mm

Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Nominal bore Dnom

GOST 12815-80

Table7

D4 D5 D6 d

h1 h2

Nominal diameter of bolts or studs

D1 D2

Series Series 1 2

10 90 60 42 24 34 23 35 15 95 65 47 29 39 28 40 14 14 20 105 75 58 36 50 35 51 25 115 85 68 43 57 42 58 32 135 100 78 51 65 50 66 40 145 110 88 61 75 60 76 18 18 50 160 125 102 73 87 72 88 65 180 145 122 95 109 94 110 80 195 160 133 106 120 105 121 8 100 230 190 158 129 149 128 150 22 22 125 270 220 184 155 175 1 176 26 26 150 300 250 212 183 203 182 204 (175) 350 295 242 213 233 212 234 30 30 12 3

70758090

4 3 105

1103 125М16

М16

М12

—

4.5

3.5

М20 М24 М27

GOST 12815-80

Table 7 (Cont.)

Dimensions in mm

Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 D

Series 2 Nominal bore Dnom

D3 D4 D5 D6 d h1 h2

Nominal diameter of bolts or studs

Series 1Series 2 М27

М27 М30 М30 М36 М42 М48

200 375 320 285 239 259 238 260 30 30 (225) 415 355 315 266 286 265 287 33 250 445 385 345 292 312 291 313 300 510 450 410 343 363 342 3 33

12 3 4 3 4.53.5

М30 16

М33

4 5 4 М36

28 32

—

М56

350 570 510 465 395 421 394 422 36 400 655 585 535 447 473 446 474 39 39 (450) 680 610 560 497 523 496 524 20 500 755 670 615 9 575 8 576 42 45 600 0 795 735 9 6516756778650676678(700) 995 900 840 751 751777777750750778778800 1135 1030 960 856 851882877855850883878(900) 1250 1140 1070 1000 1360 1250 1180 1200 1575 1460 1380 —

—

56 56 62 62 48 52 24

—

М39 М45

М52 М52 М56

Pnom 6.3 MPa (63 kgf/cm2) Dimensions in mm

Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 Series 2 Series 1 D1

D7 D8

Series 2 Nominal bore D Dnom

GOST 12815-80

Table8

D3 D4 D5 D6 d

h1 h2

h3 b2

Nominal diameter

of studs

Series Series 1 2 М12

М12 М16

10 100 70 42 24 34 23 35 18 50 35 1414

15 105 75 47 29 39 28 40 24 55 20 125 90 58 36 50 35 51 30 45 58 1818

25 135 100 68 43 57 42 58 35 50 68 32 150 110 78 51 65 50 66 42 65 78 40 165 125 88 61 75 60 76 52 75 88 50 175 135 102 73 87 72 88 63 85 1022222 65 200 160 122 95 109 94 110 85 11013280 210 170 133 106 120 105 121 97 115133

8 100 250 200 158 129 149 128 150 1241451702626 125 295 240 184 155 175 1 176 1531752053030 150 340 280 212 183 203 182 204 181205240(175) 370 310 242 213 233 212 234 218235270

3333

4.5

3.5

8.0124.0

2 4

6.5

4 3 9 2.8М16

М20 М20

М24 М27 M30

М24 М27 М30

GOST 12815-80

Tab. 8 (Cont.)

Dimensionsin mm

D3 Series 1 Series 2 Nomin

al bore D Dnom

D4 Series 1 Series 2 D5 Series 1 Series 2 D6 Series 1 Series 2 Series 1 D7 D8D9

d Series 2 п

h1 Series 1 Series 2 h2 Series 1 Series 2 h3 b2

Nominal diameter

of studs

D1 D2

Series Series 1 2

М30

М33

М36

М36 М39 М45

М36 М42 М48 М52 М56 М М72

200 405 345 285 239 (225) 430 370 315 266

250 470 400 345 292 300 530 460 410 343 350 595 525 465 395 400 670 585 535 447 500 800 705 615 9 (700) 1045 935 840 800 1165 1050 960 (900) 1285 1170 1070 1000 1415 1290 1180 1200 1665 1530 1380 259 286 312 363 421 473 575 238 265 291 342 394 446 8 260 243265285287 270280315313 2983203453 3453710

33 39

12 3 4 3 4.53.5

8.0124.0

4 5 4 5

———

————

16 422 39442046539 39 474 4480532 45 576 48 52 20 56 56 — —24

— 62 62 70 70 28

600 925 820 735 9 651 6756778650676678

М52 М56 М М72

— — — — 5

78 78 32

Рnom 10 MPa (100 kgf/cm2) Dimensionsin mm

Nominal bore Dnom

Series 1 Series 2 Series 1 Series 2 Series 1 D D1 D2 D3 D4 D5 D6 D7 D8 D9

Series 2 10 100 70 42 24 34 23 35 18 50 35 14 14 15 105 75 47 29 39 28 40 24 55

2 20 125 90 58 36 50 35 51 30 45 58 6.59 2.818 18 4 25 135 100 68 43 57 42 58 35 50 68 4 3 32 150 110 78 51 65 50 66 42 65 78 22 22 40 165 125 88 61 75 60 76 52 75 88 50 195 145 102 73 87 72 88 63 85 102 65 220 170 122 95 109 94 110 85 110 140 26 26 4 3 80 230 180 133 106 120 105 121 97 115 150 8

100 265 210 158 129 149 128 150 124 145 175 30 30 3 125 310 250 184 155 175 1 176 153 175 210 8.0124.0150 350 290 212 183 203 182 204 181 205 250 33 33 (175) 380 320 242 213 233 212 234 218 235 280 4.53.5

12 200 430 360 285 239 259 238 260 243 265 285 36 39 (225) 470 400 315 266 286 265 287 270 280 315 39

250 500 430 345 292 312 291 313 298 320 345 300 585 500 410 343 363 342 3 345 375 410 42 45 16 4 5 4 350 655 560 465 395 421 394 422 394 420 465 11.0175,848 52 5 4

400 715 620 535 447 473 446 474 445 480 535

--``,`,``,,,`,,,`,`,,`,``,,,`,`-`-`,,`,,`,`,,`---GOST 12815-80

Table9

n h

h1 h2

h3 b2

Nominal diameter

of studs

Series Series 1 2 М12 М16 М20 М24 М27 М30 M33 М36 М39 М45

М36 М42 М48 М12 М16 М20 М24 М27 М30

GOST 12815-80

Table10

Рnom 16 MPa (160 kgf/cm2) Dimensions in mm

d Series 1 Series 2 Series 1 Nominal bore D Dnom

Series 2 Series 1 D1 D2 D3 D4 D5 D6 D7 D8 D9

Series 2 --``,`,``,,,`,,,`,`,,`,``,,,`,`-`-`,,`,,`,`,,`---h1

n h h2

h3 b2

Nominal diameter

of studs

Series Series 1 2 М12 М16 М20 М24 М27 М30 M33 М36 М39

М36 М42 М12 М16 М20 М24 М27 М30

15 105 75 47 29 39 28 40 24 35 55 14 14 20 125 90 58 36 50 35 51 30 45 58 2 18 18 6.5 9 2.825 135 100 68 43 57 42 58 35 50 68 4

32 150 110 78 51 65 50 66 42 65 78 22 22 4 3 40 165 125 88 61 75 60 76 52 75 88 50 195 145 102 73 87 72 88 63 95 115 26 26 65 220 170 122 95 109 94 110 85 110 140 8.0 124.04 3 80 230 180 133 106 120 105 121 97 130 150 8

100 265 210 158 129 149 128 150 124 145 175 30 30 3 125 310 250 184 155 175 1 176 153 190 210 33

33 150 350 290 212 183 203 182 204 181 205 250 10.0144.2

(175) 380 320 242 213 233 212 234 218 255 280 36 4.53.5

12 200 430 360 285 239 259 238 260 243 275 315 11.0175.8

(225) 470 400 315 266 286 265 287 270 305 350 39 39 250 500 430 345 292 312 291 313 298 330 380 42

300 585 500 410 343 363 342 3 345 380 410 45 16 4 5 4 14.0238.5

Рnom 20 MPa (200 kgf/cm2) Dimensions in mm

Nominal bore Dnom

GOST 12815-80

Table11

D D1 D2 D3 D4 D5 D6 D7 D8 D9 d n h h1 h2 h3 b2

r diameter of studs

Nominal

15 120 82 47 29 39 28 40 24 40 55 22

20 130 90 58 36 50 35 51 30 45 58 4 25 150 102 68 43 57 42 58 35 50 68 32 160 115 78 51 65 50 66 42 65 78 26

40 170 124 88 61 75 60 76 52 75 91 50 210 160 102 73 87 72 88 63 95 129 65 260 203 122 95 109 94 110 85 130 167 30 8

80 290 230 133 106 120 105 121 97 160 190 33 100 360 292 158 129 149 128 150 124 190 245 39

125 385 318 184 155 175 1 176 153 205 271 150 440 360 212 183 203 182 204 181 240 306 45

12 (175) 475 394 242 213 233 212 234 218 275 340 200 535 440 285 239 259 238 260 243 305 380 52 (225) 580 483 315 266 286 265 287 — — —

250 670 572 345 292 312 291 313 — — — 16

М20

2 6.5 9 2.8 4 3 8.0 12 4.0 М24 М27

М30 М36 М42 М48

— — — М52

3 10.0 14 4.2 11.0 17 5.8 4.5 3.5

Notes to tables 1 to 12:

1. Flanges with nominal bores indicated in brackets shall not be applied for general-duty fittings. 2. Flanges shall be manufactured with the dimensions pursuant to preferable series 2.

3. For earlier developed articles it is allowed to perform d and D2, D7 and D9 dimensions in accordance with the working drawings until machining attachments are replaced.

GOST 12815-80

Table 12

Dimensions in mm

Nominal bore

2 Dnom

Рnom, MPa (kgf/cm) Series D3, D5 D4, D6 Up to 0.63

1 19 31 10

(6.3) 2 18 30 Over 0.63 (6.3) 1; 2 23 35 to 10 (100) Up to 0.63 1 24 36 15

(6.3) 2 22 34 Over 0.63 (6.3) 1 28 40 to 20 (200) 2 Up to 0.63 (6.3)

1 31 47 20

2 32 44 Over 0.63 (6.3) 1; 2 35 51 to 20 (200) Up to 0.63 1 38 25 (6.3) 2 40 52 Over 0.63 (6.3) 1; 2 42 58 to 20 (200) Up to 0.63 1 48 32

(6.3) 2 60 Over 0.63 (6.3) 1; 2 50 66 to 20 (200) Up to 0.63 (6.3)

1 55 71 40

2 70 Over 0.63 (6.3) 1; 2 60 76 to 20 (200) Up to 0.63 (6.3)

1 68 84 50

2 65 81 Over 0.63 (6.3) 1; 2 72 88 to 20 (200)

h1 h2

4 3

GOST 12815-80

Table 12 (Cont.)

Dimensions in mm

Nominal bore

Dnom

Рnom, MPa (kgf/cm2) Series D3, D5 Up to 0.63 (6.3)

1 1; 2 1 1; 2 1 1; 2 1 2 1; 2 1 2 1; 2 1 1; 2 1 1; 2

88 94 102 105 122 128 148 145 1 175 170 182 205 212 230 238

D4, D6 104 110 118 121 144 150 170 167 176 197 192 204 227 234 252 260

h1 h2

2 85 101 Over 0.63 (6.3) to 20 (200) Up to 0.63 (6.3)

4 3 80

2 100 116 Over 0.63 (6.3) to 20 (200) Up to 0.63 (6.3)

100

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125

150 6 5 (175)

2 202 224 Over 0.63 (6.3) to 20 (200) Up to 0.63 (6.3)

200

2 228 250 Over 0.63 (6.3) to 20 (200)

GOST 12815-80

Table 12 (Cont.)

Dimensions in mm

Nominal bore

Dnom

Рnom, MPa (kgf/cm2) Series D3, D5

D4, D6 h1 h2

Up to 0.63 (6.3) 1 225 277 2 (225)

Over 0.63 (6.3) 1; 2 265 287 to 20 (200)

Up to 0.63 (6.3) 1 285 307 250

2 282 304 Over 0.63 (6.3) 1; 2 291 313 to 20 (200) Up to 0.63 (6.3)

1 335 357 300

2 Over 0.63 (6.3) 1; 2 242 3 to 16 (160) Up to 0.63 (6.3)

380

408

350

2 385 407 Over 0.63 (6.3) 1; 2 394 422 to 10 (100)

Up to 0.63 (6.3) 1 430 458 400

2 435 457 Over 0.63 (6.3) 1; 2 446 474 to 10 (100)

Up to 0.63 (6.3) 1 480 508 450

2 488 510 Over 0.63 (6.3) 1; 2 496 524 to 4.0 (40) Up to 0.63 (6.3)

1 530 558 500

2 0 562 Over 0.63 (6.3) 1; 2 8 576 to 6.3 (63)

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6 5

GOST 12815-80

Table 12 (Cont.)

Dimensions in mm

Nominal bore

Dnom

Рnom, MPa (kgs/cm2) Series D3, D5 Up to 0.63 (6.3)

1 1 2 1 2 1; 2

1; 2 1 2

630 8 650 735 736 750 840 855 850

D4, D6 658 676 678 763 7 778 868 883 878

h1 h2

600

2 634 662 Over 0.63 (6.3) to 6.3 (63) Up to 0.63 (6.3) Over 0.63 (6.3) to 4.0 (40) Up to 0.63 (6.3)

Over 0.63 (6.3) to 4.0 (40)

700 6 5 800

(Amended Wording, Amendments Nos. 1, 3, 4 and 5).

3. Tolerance range of fluoroplastic liner locations in conjugated components shall correspond to those specified in table 13.

(Amended Wording, Amendment No. 3).

4. It is allowed to manufacture flanges of other designs with other modifications of sealing surfaces, including those with sealing grooves on a connecting projection or weld ring, with obligatory performance of connecting dimensions in accordance with tables 2 to 11.

5. Nominal bores shall be in accordance with GOST 28338-.

Nominal (conventional) pressure shall be in accordance with GOST 26349-84. Working pressure shall be in accordance with GOST 356-80. (Amended Wording, Amendment No. 5).

6. To provide convenient assembling the holes for bolts and studs in fitting flanges of machines, devices, branch pipes of devices and tanks shall be arranged symmetrically in relation to the main axes (but not on the main axes).

(Amended Wording, Amendment No. 5).

GOST 12815-80

Table 13

Diameter (of tenon or mortise),

mm From 18 to 30 Over 30 to 130 Over 130 to 260 Over 260 to 500 Over 500 to 800 Over 800 to 1000

Tolerance range

b12 d11

H11 Н10 Н9

f9 f9

Holes Shaft Н12

7. It is allowed to manufacture square flanges of all modifications, having 4 bolt (or stud) holes for Рnom ≤ 4.0 МPа (40 kgf/сm2).

8. Dimension tolerances for D and B:

shall be of the 9-th class of accuracy in accordance with GOST 265-85 for cast-iron and cast steel flanges;

shall be in accordance with GOST 2590-88 and GOST 2591-88 for flanges made from rolled metal of usual accuracy (В);

shall be of the 2-nd class of accuracy in accordance with GOST 14792-80 for flanges made by a method of oxygen and arc-plasma cutting;

shall be of Т4 class of accuracy in accordance with GOST 7505- for pressed flanges made from strip by bending method with the subsequent joint welding and hot straightening; and in this case there is allowed the weld reinforcement which shall not be taken into account during determination of the maximum deviation;

shall be in accordance with h16 when manufacturing by other methods. (Amended Wording, Amendment No. 5). 9. (Removed, Amendment No. 3).

10. Maximum deviations of nominal dimension h shall be: ±1 mm for h = 2 mm; ±2 mm for h > 2 mm.

For cast flanges the allowed dimension h is: of no less than 2 mm for Dnom ≤ 32 mm and of no less than 3 mm for Dnom > 32 mm. (Amended Wording, Amendment No. 3).

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GOST 12815-80

11. Maximum deviations of nominal dimensions:

h1 and h2 …………………………….. + 0.5 mm D2 …………………………….. ± 4.0 mm D3, D6 ……………………………...H12 D4, D5 …………………………….. h12 D7 …………………………….. ± 0.75 mm D8 …………………………….. ± 0.15 mm b2, h3 …………………………….. 0.4 mm

…………………………….. H15 d

h14 D9 ……………………………..

(Amended Wording, Amendments Nos. 3 and 4).

12. For connections of type A, in accordance with GOST 14140-81, the positional

tolerance of holes d axes (dependent tolerance) in diametrical expression shall be of no more than, mm:

1.0 for holes of 11 mm in diameter;

2.0 for holes from 14 to 26 mm in diameter; 3.0 for holes from 30 to 45 mm in diameter; 4.0 for holes of 52 and 56 mm in diameter; 6.0 for holes from 62 to 78 mm in diameter.

When manufacturing flanges with threaded holes (type B in accordance with GOST 14140-81), the positional tolerance of holes d axes (dependent tolerance) in diametrical expression shall be of no more than, mm:

0.5 for holes of 11 mm in diameter;

1.0 for holes from 14 to 26 mm in diameter; 1.6 for holes from 30 to 45 mm in diameter; 2.0 for holes of 52 and 56 mm in diameter; 3.0 for holes from 62 to 78 mm in diameter. (Amended Wording, Amendment No. 1).

APPENDIX Reference

Details on GOST 12815-80, CMEA Standard 3249-81, CMEA Standard 3250-81 and CMEA Standard 3251-81 compliance.

Clause 2 of GOST 12815-80 complies with clauses: 4 and 5 of CMEA Standard 3249-81; 4, 5 and 6 of CMEA Standard 3250-81; 4 and 5 of CMEA Standard 3251-81.

(Subsequently Inserted, Amendment No. 2).

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