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Refer GOST 12821/ 33259/ 12815/ 12820 Flange dimensions and weight chart


GOST Flange



GOST Flange Specification


Specification GOST Flange
Schedule SCH 5S, SCH 10, SCH 40, SCH 80, SCH 120, SCH 160, SCH 180 To XXS
Flange Test Hydrostatic testing machine/ UI trasonic flaw detector/ X-ray detector/ Direct-reading Spectrograph/ Magnetic particle detector
Flange Equipment Pushing Machine/ electric bevelling machine/ Press machine/ Bending machine/ Sand-blasting machine etc
Coating Anti-rust Paint/ Zinc Plated/ Oil Black Paint/ Yellow Transparent/ Cold and Hot Dip Galvanized
Manufacturer Length NPS 1⁄₂" To NPS 48”
Face Type RTJ/ FF/ RF/ lap joint/ Male & Female / Tongue & Groove.
Forging Methods Casting/ Forging/ Rolling/ Cutting
Supporting Material Gasket/ Ring Joint/ Flange Bolts
Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
Production Technique Forged/ Heat treated and machined
Manufacturer of Forged/ Threaded/ Screwed / Plate
Manufacturer Pressure Class Class 150 (lb) up to 24"
Class 300 (lb) up to 20"
Class 600 (lb) up to 20"
Class 900 (lb) up to 16"
Class 1500 (lb) up to 10"
Class 2500 (lb) up to 8"
Application Bitumen upgraders
Heavy oil refineries.
Nuclear power (mostly seamless).
Petrochemicals and acids.

Gost 12821-80 PN16 Slip On Flange Price List


Type Of Flange Size In Inch SCH Class Standard Price In INR (India) Per Piece
Slip On Flange 1 1/2 40 150 GOST 12821 234.00
- 2 40 150 - 350.00
- 3 2/3 40 150 - 547.00
- 4 40 150 - 876.00
Slip On Flange 6 3/4 80 300 GOST 12821 1290.00

Manufacturer of GOST Standard Flanges in Stainless, Alloy and Carbon Steel material, check price and list of grades


Types Of Russian Flange Standards


GOST Pipe Flange

GOST Pipe Flange

GOST Forged Flange

GOST Forged Flange

Russian Flange Standards

Russian Flange Standards

GOST 12821 Blind Flanges

GOST 12821 Blind Flanges

GOST 12821 Slip On Flanges

GOST 12821 Slip On Flanges

GOST 12821 Weld Neck Flanges

GOST 12821 Weld Neck Flanges

GOST 33259 Threaded Flanges

GOST 33259 Threaded Flanges

 GOST 12821 Puddle Flange

GOST 12821 Puddle Flange

GOST 12820 RTJ Flanges

GOST 12820 RTJ Flanges

GOST 12815 Orifice Flanges

GOST 12815 Orifice Flanges

 GOST 12815-80 Spectacle Blind Flanges

GOST 12815-80 Spectacle Blind Flanges

GOST 12820-80 Plate Flanges

GOST 12820-80 Plate Flanges

GOST 12821 Reducing Flange

GOST 12821 Reducing Flange

 GOST Vanstone Flange

GOST Vanstone Flange

GOST 12820 Raised Face Flanges

GOST 12820 Raised Face Flanges

Russian Flange

Russian Flange

GOST Standard Flange

GOST Standard Flange

GOST 12821-80 Weld Neck Flange

GOST 12821-80 Weld Neck Flange

GOST 12821 Welding Neck Flange

GOST 12821 Welding Neck Flange

 GOST 12836 Blind Flange

GOST 12836 Blind Flange

Gost 12821-80 PN16 Slip On Flange

Gost 12821-80 PN16 Slip On Flange


Check Gost 33259 flange dimensions of Class 150/ 300/ 600, buy large diameter GOST Standard Flange at factory price in India


GOST 12821-80 Flanges Dimensions


GOST 12821-80 Flanges Dimensions

Проход условный Dy (d)1 (b) (h)4 (Dm) (Dn) Масса, кг
соединительным выступом (C) выступом (C) впадиной (C) шипом (C) пазом (C)
10 8 10 27 22 15 0,34 0,34 0,32 0,34 0,33
15 12 28 28 19 0,40 0,40 0,38 0,40 0,40
20 18 30 36 26 0,53 0,53 0,50 0,53 0,52
25 25 12 42 33 0,76 0,77 0,72 0,75 0,75
32 31 33 50 39 1,10 1,08 1,04 1,08 1,08
40 38 35 60 46 1,36 1,37 1,28 1,30 1,34
50 49 70 58 1,53 1,51 1,44 1,46 1,47
65 66 88 77 1,97 2,06 1,83 1,72 1,75
80 78 13 37 102 90 2,76 2,76 2,80 2,65 2,72
100 96 38 122 110 3,35 3,04 3,03 3,03 3,04
125 121 15 40 148 135 4,66 4,24 3,66 4,50 4,55
150 146 43 172 161 5,37 5,85 4,93 5,29 5,35
(175) 177 17 47 210 196 7,32 8,10 6,92 7,11 7,16
200 202 50 235 222 8,37 9,35 7,75 7,98 8,05
(225) 226 260 248 9,45 9,25 8,72 8,98 9,06
250 254 18 288 278 10,99 10,69 10,14 12,20 12,30
300 303 340 330 14,82 14,28 14,10 13,81 14,11
350 351 390 382 17,69 18,65 17,64 16,35 16,72
400 398 440 432 20,55 19,69 19,30 18,83 19,31
(450) 450 494 484 23,63 23,60 21,90 21,62 22,24
500 501 19 545 535 26,63 29,10 25,90 24,44 25,10
600 602 55 650 636 35,79 35,60 33,40 37,49 33,67
(700) 692 740 726 44,31 44,10 41,10 40,60 41,86
800 792 60 844 826 56,17 55,20 52,20 51,67 53,36
(900) 892 21 944 926 66,79
1000 992 1044 1028 73,51
1200 1192 23 70 1248 1228 111,43
1400 1392 27 85 1456 1428 156,58
1600 1592 32 95 1660 1628 218,57

GOST 12821-80 Flange PN0.6MPa Dimensions Dimensions


Проход условный Dy (b) (d1) (Dn) (Dm) Масса, кг
соединительным выступом (C) выступом (C) впадиной (C) шипом (C) пазом (C)
10 10 8 15 22 0,34 0,34 0,32 0,34 0,33
15 12 19 28 0,40 0,40 0,38 0,40 0,40
20 18 26 36 0,53 0,53 0,50 0,53 0,52
25 12 25 33 42 0,76 0,77 0,72 0,75 0,75
32 31 39 50 1,10 1,08 1,04 1,08 1,08
40 38 46 60 1,36 1,37 1,28 1,30 1,34
50 49 58 70 1,53 1,51 1,44 1,46 1,47
65 66 77 88 1,97 2,06 1,83 1,72 1,75
80 13 78 90 102 2,76 2,76 2,80 2,65 2,72
100 96 110 122 3,35 3,04 3,03 3,03 3,04
125 15 121 135 148 4,66 4,24 3,66 4,50 4,55
150 146 161 172 5,37 5,85 4,93 5,29 5,35
(175) 17 177 196 210 7,32 8,10 6,92 7,11 7,16
200 202 222 235 8,37 9,35 7,75 7,98 8,05
(225) 226 248 260 9,45 9,25 8,72 8,98 9,06
250 18 254 278 288 10,99 10,69 10,14 12,20 12,30
300 303 330 340 14,82 14,28 14,10 13,81 14,11
350 351 382 390 17,69 18,65 17,64 16,35 16,72
400 398 432 440 20,55 19,69 19,30 18,83 19,31
(450) 450 484 494 23,63 23,60 21,90 21,62 22,24
500 19 501 535 545 26,63 29,10 25,90 24,44 25,10
600 602 636 650 35,79 35,60 33,40 37,49 33,67
(700) 692 726 740 44,31 44,10 41,10 40,60 41,86
800 792 826 844 56,17 55,20 52,20 51,67 53,36
(900) 21 892 926 944 66,79
1000 992 1028 1044 73,51
1200 23 1192 1228 1248 111,43
1400 27 1392 1428 1456 156,58
1600 32 1592 1628 1660 218,57

GOST 12821-80 Flange PN1.0MPa Dimensions


Проход условный Dy (Dm) (d1) (Dn) (b) (h4) Масса, кг
соединительным выступом (C) выступом (C) впадиной (C) шипом (C) пазом (C)
10 25 8 15 10 33 0,50 0,50 0,48 0,50 0,49
15 30 12 19 0,58 0,58 0,54 0,57 056
20 38 18 26 12 36 0,87 0,87 0,81 0,87 0,83
25 45 25 33 38 1,05 1,05 0,98 1,03 1,02
32 55 31 39 13 40 1,54 1,53 1,45 1,50 1,49
40 62 38 46 42 1,83 1,78 1,71 1,74 1,78
50 76 49 58 2,26 2,23 2,15 2,15 2,21
65 94 66 77 15 45 3,17 3,11 2,92 3,06 3,14
80 105 78 90 47 3,67 3,60 3,46 3,54 3,65
100 128 96 110 17 48 4,70 4,70 4,49 4,50 4,54
125 156 121 135 19 57 6,71 6,58 6,27 6,12 6,23
150 180 146 161 8,17 8,20 7,77 8,80 8,90
(175) 210 177 196 9,71 9,57 9,09 9,36 9,49
200 240 202 222 58 11,35 11,00 10,47 10,28 10,32
(225) 268 226 248 60 13,24 13,04 12,40 12,64 12,83
250 290 254 278 21 14,64 14,39 13,86 13,64 13,83
300 345 303 330 22 18,66 19,30 17,70 18,52 18,90
350 400 351 382 24,00 21,70 22,56 22,70 23,00
400 445 398 432 30,00 30,35 27,65 28,00 28,50
(450) 500 450 484 65 33,33 34,69 31,30 31,21 31,83
500 550 501 535 24 39,20 40,00 37,00 36,91 37,60
600 650 602 636 48,80 50,00 46,60 45,52 48,70
(700) 744 692 726 25 65,26 64,70 60,50 59,86 62,28
800 850 792 826 27 75 87,24 86,10 80,40 81,25 84,28
(900) 950 892 926 29 80 103,02
1000 1050 992 1028 119,19
1200 1256 1192 1228 33 90 179,91

GOST 12821-80 Flange PN1.6MPa Dimensions


Проход условный Dy (h4) (Dm) (d1) (b) (Dn) Масса, кг
соединительным выступом (C) выступом (C) впадиной (C) шипом (C) пазом (C)
10 33 26 8 12 15 0,59 0,60 0,58 0,59 0,58
15 30 12 19 0,68 0,68 0,65 0,67 0,66
20 36 28 18 26 0,87 0,87 0,82 0,85 0,84
25 38 45 25 33 1,05 1,05 0,99 1,03 1,02
32 40 55 31 13 39 1,54 1,54 1,48 1,50 1,50
40 42 64 38 46 1,85 1,81 1,77 1,77 1,81
50 45 76 49 58 2,28 2,24 2,16 2,17 2,23
65 47 94 66 15 77 3,19 3,17 3,05 3,06 3,14
80 50 110 78 17 90 4,21 4,15 4,04 4,06 4,17
100 130 96 110 4,90 4,80 4,65 4,72 4,78
125 57 156 121 19 135 6,75 6,76 6,47 6,55 6,66
150 180 146 161 8,30 8,28 7,88 7,96 8,08
(175) 210 177 21 196 10,37 9,79 9,32 10,05 10,17
200 58 240 202 222 11,79 11,72 11,28 11,04 11,20
(225) 65 268 226 248 14,12 14,48 13,55 13,60 13,70
250 292 254 23 278 17,36 15,00 14,30 16,67 16,86
300 66 346 303 24 330 22,76 22,65 20,83 21,60 22,10
350 70 400 351 28 382 32,04 32,00 29,43 30,60 33,10
400 75 450 398 32 432 43,00 42,64 41,10 41,00 41,70
(450) 85 506 450 34 484 54,00 53,50 52,20 51,40 52,40
500 90 559 501 38 535 70,97 70,32 69,00 68,00 69,90
600 660 602 41 636 99,30 97,81 96,73 94,50 96,60
(700) 95 750 692 43 726 105,90 105,97 102,00 100,70 101,10
800 850 792 45 826 130,57 118,79 115,00 124,80 127,6
(900) 110 958 892 47 926 157,83
1000 1060 992 49 1028 203,39
1200 125 1268 1192 51 1228 284,94

GOST 12821-80 Flange PN2.5MPa Dimensions


Проход условный Dy (h4) (d1) (b) (Dm) (Dn) Масса, кг
соединительным выступом (C) выступом (C) впадиной (C) шипом (C) пазом (C)
10 33 8 14 26 15 0,68 0,69 0,66 0,68 0,67
15 12 30 19 0,79 0,78 0,75 0,80 0,78
20 34 18 38 26 0,97 0,99 0,93 0,97 0,95
25 36 25 45 33 1,18 1,19 1,13 1,16 1,15
32 43 31 16 56 39 1,83 1,85 1,78 1,81 1,80
40 45 38 64 46 2,19 2,16 2,10 2,11 2,15
50 49 17 76 58 2,78 2,76 2,47 2,69 2,75
65 50 66 19 96 77 3,71 3,62 3,60 3,55 3,62
80 52 78 110 90 4,44 4,32 4,27 4,26 4,48
100 58 96 21 132 110 6,51 6,58 6,27 6,41 6,49
125 65 121 23 160 135 9,41 9,45 9,14 9,27 9,37
150 68 146 25 186 161 12,52 12,56 11,90 12,01 12,17
(175) 70 177 216 196 13,88 13,94 13,63 13,65 13,83
200 75 202 27 245 222 17,44 17,21 16,86 16,36 16,62
(225) 226 29 270 248 21,56 21,68 21,15 22,54 22,86
250 254 300 278 24,40 24,08 23,27 25,37 25,74
300 80 303 32 352 330 33,29 32,40 31,94 32,42 33,16
350 85 351 36 406 382 46,57 45,60 44,68 45,40 46,23
400 100 398 40 464 432 64,81 63,58 62,41 63,48 64,59
(450) 450 42 515 484 72,26 71,60 70,70 70,80 71,95
500 500 44 570 535 88,91 88,20 86,50 86,48 88,08
600 115 600 49 670 636 123,70 122,00 105,70 119,50 122,17
(700) 125 690 53 766 726 166,81 164,02 162,70 157,53 160,82
800 135 790 55 874 826 213,90 211,00 209,00 210,00 214,68
(900) 145 892 57 980 926 252,91
1000 150 992 59 1084 1028 312,12
1200 160 1192 62 1288 1228 387,50

GOST 12821 PN6 Carbon Steel Welding Neck Flange Dimensions


GOST 12821 PN6 Carbon Steel Welding Neck Flange Dimensions

GOST 12820 PN16 Flat Flange Dimensions


GOST 12820 PN16 Flat Flange Dimensions

(Dn) mm (D) mm (D1) mm (dв) mm (b) mm (d) mm (n-¢) Weight In Kilogram
15 95 65 19 12 14 4 0,61
20 105 75 26 14 14 4 0,86
25 115 85 33 16 14 4 1,17
32 135 100 39 16 18 4 1,58
40 145 110 46 17 18 4 1,96
50 160 125 59 19 18 4 2,58
65 180 145 78 21 18 4 3,42
80 195 160 91 21 18 4 3,71
100 215 180 110 23 18 8 4,73
125 245 210 135 25 18 8 6,38
150 280 240 161 25 22 8 7,81
200 335 295 222 27 22 12 10,10
250 405 355 273 28 26 12 14,49
300 460 410 325 28 26 12 17,78
350 520 470 377 30 26 16 22,88
400 580 525 426 34 30 16 31,00
500 710 650 530 44 33 20 57,01
600 840 770 630 45 39 20 80,03
800 1 020 950 820 49 39 24 104,41
1000 1255 1170 1 020 58 45 28 179,37
1200 1485 1390 1220 71 52 32 297,78

GOST 12836 PN16 Blind Flange Dimensions


GOST 12836 PN16 Blind Flange Dimensions

NPS Weight In KG (D) (D1) Holes Number (H) (D4) (b) (D3) (D2) (h1)
15 95 65 45 12 10 14 2 2 4 0.43
20 105 75 58 12 16 14 2 2 4 0.55
25 115 85 68 12 22 14 2 2 4 0.67
32 135 100 78 12 28 18 2 2 4 0.91
40 145 110 88 14 36 18 3 2 4 1.24
50 160 125 102 14 46 18 3 2 4 1.55
65 180 145 122 14 60 18 3 2 4 2.04
80 195 160 138 14 76 18 3 2 4 2.44
100 215 180 158 16 94 18 3 2 8 3.51
125 245 210 188 16 118 18 3 2 8 4.69
150 280 240 212 18 142 23 3 2 8 6.99
200 335 295 268 20 196 23 3 2 12 11.49
250 390 355 320 24 244 27 3 2 12 19.74
300 405 410 378 28 294 27 4 3 12 29.58
350 460 470 438 32 344 27 4 3 16 44.22
400 520 525 490 34 390 30 4 3 16 59.86
500 580 650 610 40 490 33 4 3 20 102.69
600 710 770 720 45 590 40 5 4 20 161.98
800 840 950 900 52 780 40 5 4 24 300.6
1000 1020 1170 1110 63 980 46 5 4 28 542.16
1200 1485 1390 1325 75 1180 52 5 4 32 922.18

Check Gost 33259 flange dimensions of Class 150/ 300/ 600, buy large diameter GOST Standard Flange at factory price in India


Gost 33259 Flange Dimensions


Gost 33259 Flange Dimensions

Diameter conditional (DN), millimeter O.D. Of (D), millimeter Diameter of spacing (D0), millimeter Diameter internal (dB), millimeter Flange wall thickness (b), millimeter fastener Size (d0), millimeter mounting holes Number (n), pcs Weight of one flange, kilogram
15 80/95 55/65 nineteen 10/10 11/14 4/4 0.3 / 0.5
20 90/105 65/76 nineteen 12/12 11/14 4/4 0.5 / 0.7
25 100/115 75/85 nineteen 12/12 11/14 4/4 0.6 / 0.9
32 120/135 90/100 39 13/14 14/18 4/4 1.1 / 1.4
40 130/145 100/110 46 13/15 14/18 4/4 1.2 / 2
50 140/160 110/125 59 13/15 14/18 4/4 1.3 / 2.1
65 160/180 130/145 78 13/17 14/18 4/4 1.6 / 2.8
80 180/195 150/160 91 15/17 18/18 4/4 2.4 / 3.2
100 205/215 170/180 110 15/19 18/18 4/8 2.8 / 4
125 235/245 200/210 135 17/21 18/18 8/8 3.8 / 5.4
150 260/280 225/240 161 17/21 18/22 8/8 4.4 / 6.6
200 315/335 280/295 222 19/21 18/22 8/8 5.9 / 8
250 370/390 335/350 273 20/23 18/22 12/12 7.6 / 10
300 435/440 395/400 325 20/24 22/22 12/12 10.2 / 13
350 485/500 445/460 377 22/24 22/22 12/16 12.6 / 16
400 535/565 495/515 426 24/26 22/26 16/16 15.2 / 21
500 640/670 600/620 530 25/28 22/26 16/20 19/28
600 755/780 705/725 630 25/31 26/30 20/20 26/40
800 975/1010 920/950 820 27/37 30/33 24/24 46/79
1000 1175/1220 1120/1160 1020 31/43 30/33 28/28 64/118

Manufacturer of GOST Flange in FF/ RTJ and Raised Face, our inventory includes GOST 12821-80 Blind, Slip On, Weld Neck and Socket Weld Flange

GOST 12821-80 PN16 Slip On Flange Wall Thickness


NPSOuter Diameter
(O.D)
Minimum Wall Thickness
(T)
(RF) Diameter
(R)
Number of Bolt HolesHoles DiameterBC
(Bolt Circle)
SO Bore Inner Diameter
(SB)
WN Bore Inner Diameter
(WB)
Diameter Hub Base
(HB)
Diameter of Hub Top
(HT)
SO Length
(SL)
WN Length
(WL)
123.500.381.3840.622.380.880.621.190.840.561.81
343.880.441.6940.622.751.090.821.501.050.562.00
14.250.502.0040.623.121.361.051.941.320.622.12
1144.620.562.5040.623.501.701.382.311.660.752.19
1125.000.622.8840.623.881.951.612.561.900.812.38
26.000.693.6240.754.752.442.073.062.380.942.44
2127.000.814.1240.755.502.942.473.562.881.062.69
37.500.885.0040.756.003.573.074.253.501.122.69
3128.500.885.5080.757.004.073.554.814.001.192.75
49.000.886.1980.757.504.574.035.314.501.252.94
510.000.887.3180.888.505.665.056.445.561.383.44
611.000.948.5080.889.506.726.077.566.631.503.44
813.501.0610.6280.8811.758.727.989.698.631.693.94
1016.001.1212.75121.0014.2510.8810.0212.0010.751.883.94
1219.001.1915.00121.0017.0012.8812.0014.3812.752.124.44
1421.001.3116.25121.1218.7514.1413.2515.7514.002.194.94
1623.501.3818.50161.1221.2516.1615.2518.0016.002.444.94
1825.001.5021.00161.2522.7518.1817.2519.8818.002.625.44
2027.501.6223.00201.2525.0020.2019.2522.0020.002.815.62
2229.501.7525.25201.3827.2522.2221.2524.2522.003.075.82
2432.001.8127.25201.3829.5024.2523.2526.1224.003.195.94

Russian GOST Flange Weight


Normal Size Of Steel PipeDimensions In MillimeterASME B16.5 Flanges Weight In Kilogram
Normal Size Of Steel Pipe In InchesSize In MillimeterClass 150 Flanges
Outer Daimeter (O.D.) In
(MM)
150# Flanges
Wall Thickness Of
(D)
In M)
(GOST Slip On Flanges)
(GOST Socket Weld Flanges)
(GOST Weld Neck Flanges)(GOST Blind Flanges)
1/21588.911.20.40.50.4
3/42098.612.70.60.70.6
12510814.20.810.9
1 1/432117.315.711.31.2
1 1/24012717.51.31.71.5
250152.419.12.12.62.4
2 1/265177.822.43.34.13.9
380190.523.93.94.94.9
3 1/290215.923.94.86.16.2
4100228.623.95.36.87.0
512525423.96.18.68.6
6150279.425.47.510.611.3
8200342.928.412.117.619.6
10250406.430.216.52428.6
12300482.631.826.236.543.2
14350533.435.134.648.458.1
16400596.936.644.860.676.1
1845063539.648.968.393.7
20500698.542.961.984.5122.0

GOST Standard Flanges Sizes


Normal Pipe Size

DN

1/2

15

3/4

20

1

25

1 1/4

32

 1 1/2

40

2

50

2 1/2

65

3

80

4

100


PN 250 GOST 33259 Flanges for fittings, valves and pipelines, manufacturer of GOST 12815-80 Orifice and Lap Joint Flange in various pressure rating

GOST Pipe Flange Pressure Rating


GOST Pipe Flange Pressure Rating

GOST 33259 Plate Flange Bolt Chart


Class 150Class 300Class 600
NPS# Studs And BoltsDiameter of Studs And BoltsLength of Stud# Studs And BoltsDiameter of Studs And BoltsLength of Stud# Studs And BoltsDiameter of Studs And BoltsLength of Stud
1/16 RFRTJ1/16 RFRTJ1/4 RFRTJ
1/240.502-1/440.502-1/2340.5033
3/440.502-1/240.6333-1/240.633-1/23-1/2
140.502-1/2340.6333-1/240.633-1/23-1/2
1-1/440.502-3/43-1/440.633-1/43-3/440.633-3/43-3/4
1-1/240.502-3/43-1/440.753-1/2440.754-1/44-1/4
240.633-1/43-3/480.633-1/2480.634-1/44-1/4
2-1/240.633-1/2480.7544-1/280.754-3/44-3/4
340.633-1/2480.754-1/44-3/480.7555
3-1/280.633-1/2480.754-1/4580.885-1/25-1/2
480.633-1/2480.754-1/2580.885-3/45-3/4
580.753-3/44-1/480.754-3/45-1/481.006-1/26-1/2
680.7544-1/2120.754-3/45-1/2121.006-3/46-3/4
880.754-1/44-3/4120.885-1/26121.137-1/27-3/4
10120.884-1/25161.006-1/46-3/4161.258-1/28-1/2
12120.884-3/45-1/4161.136-3/47-1/4201.258-3/48-3/4
14121.005-1/45-3/4201.1377-1/2201.389-1/49-1/4
16161.005-1/45-3/4201.257-1/28201.501010
18161.135-3/46-1/4241.257-3/48-1/4201.6310-3/410-3/4
20201.136-1/46-3/4241.2588-3/4241.6311-1/411-1/2
24201.256-3/47-1/4241.50910241.881313-1/4

Class 900Class 1500Class 2500
NPS# Studs And BoltsDiameter of Studs And BoltsLength of Stud# Studs And BoltsDiameter of Studs And BoltsLength of Stud# Studs And BoltsDiameter of Studs And BoltsLength of Stud
1/4 RFRTJ1/4 RFRTJ1/4 RFRTJ
1/240.754-1/44-1/440.754-1/44-1/440.754-3/44-3/4
3/440.754-1/24-1/240.754-1/24-1/240.7555
140.885540.885540.885-1/25-1/2
1-1/440.885540.885541.0066
1-1/241.005-1/25-1/241.005-1/25-1/241.136-3/46-3/4
280.885-3/45-3/480.885-3/45-3/481.0077
2-1/281.006-1/46-1/481.006-1/46-1/481.137-3/48
380.885-3/45-3/481.137781.258-3/49
481.136-3/46-3/481.257-3/47-3/481.501010-1/4
581.257-1/27-1/281.509-3/49-3/481.7511-3/412-1/4
6121.137-1/27-3/4121.3810-1/410-1/282.0013-1/214
8121.388-3/48-3/4121.6311-1/211-3/4122.001515-1/2
10161.389-1/49-1/4121.8813-1/413-1/2122.5019-1/420
12201.381010162.0014-3/415-1/4122.7521-1/422
14201.5010-3/411162.251616-3/4
16201.6311-1/411-1/2162.5017-1/218-1/2
18201.8812-3/413-1/4162.7519-1/220-3/4
20202.0013-3/414-1/4163.0021-1/422-1/4
24202.5017-1/418163.5024-1/425-1/2

Face Types Of GOST 12821 Flange


Face Types Of GOST 12821 Flange

GOST 12820 Flange Tolerance


Type Of ASME/ ANSI B16.5 2 Inch Stainless Flange DiameterTolerance Chart
(A) (Outer Diameter)
  • When Outer Diameter is 24 Inch or less: ±1/16" (1.6 mm)
  • When Outer Diameter is over 24": ±1/8" (3.2 mm)
(D) (Inner Diameter)
  • 10 Inches and smaller: ±1/32" (0.8 in mm)
  • 12 Inches thru 18": +1/8" (3.2 in mm)
  • 20 Inches and larger: -1/16" (1.6 in mm)
(B) Contact Face
  • 1/16" (RF): ±1/32" (0.8 mm)
  • 1/4" (RF), Tongue And Groove (male And female): ±1/64" (0.4 mm)
(J) Hub At Base Dai.
  • When hub base is 24 inches or smaller: ±1/16" (1.6 millimeter)
  • When hub base is over 24": ±1/8" (3.2 millimeter)
(H) Diameter of hub at point of welding
  • 5 inch or smaller: +3/32" (2.4 mm), -1/32" (0.8 millimeter)
  • 6 inch or larger: +5/32" (4.0 millimeter), -1/32 (0.8 mm)
(P) Drilling
  • (B.C.): ±1/16" (1.6 mm)
  • (B.H.) spacing: ±1/32" (0.8 mm)
  Eccentricity of (bc) with respect to facing
  • 2 1/2" or smaller ±1/32" (0.8 mm) max.
  • 3" or larger ±1/16" (1.6 mm) max.
(C) (W.T.)
  • 18 inch or smaller: ±1/8" (3.2 mm), -0"
  • 20 inch or larger: ±3/16" (4.8 mm), -0"
(K) hub Length
  • 10 Inch or smaller: ±1/16" (1.6 millimeter)
  • 12 Inch or larger: ±1/8" (3.2 millimeter)

Gaskets For GOST 12815 RTJ Flanges


Gaskets For GOST 12815 RTJ Flanges
(Normal Size Of Steel Pipes) In Inch (I.D.) Inner Daimeter Gasket
(O.D.) Outer Daimeter Gasket
Class 150#/ LB Class 300#/ LB Class 400#/ LB Class 600#/ LB Class 900#/ LB
1/2 0.84 1.875 2.125 2.125 2.125 2.50
3/4 1.06 2.25 2.625 2.625 2.625 2.75
1 1.31 2.625 2.875 2.875 2.875 3.125
1 1/4 1.66 3 3.25 3.25 3.25 3.50
1 1/2 1.91 3.375 3.75 3.75 3.75 3.875
2 2.38 4.125 4.375 4.375 4.375 5.625
2 1/2 2.88 4.875 5.125 5.125 5.125 6.50
3 3.50 5.375 5.875 5.875 5.875 6.625
4 4.50 6.875 7.125 7.00 7.625 8.125
5 5.56 7.75 8.50 8.375 9.50 9.75
6 6.62 8.75 9.875 9.75 10.50 11.375
8 8.62 11 12.125 12.00 12.625 14.125
10 10.75 13.375 14.25 14.125 15.75 17.125
12 12.75 16.125 16.625 16.50 18.00 19.625

GOST 12815-80 Flange Surface Finish Chart


GOST 12815-80 Flange Surface Finish Chart
Normal Pipe Size(A)(B)
1/23.01.5
3/43.01.5
13.01.5
1-1/43.01.5
1-1/23.01.5
23.01.5
2-1/23.01.5
34.51.5
3-1/26.03.0
46.03.0
56.03.0
66.03.0
88.04.5
108.04.5
128.04.5
148.04.5
1610.04.5
1812.06.0
2012.06.0
2212.06.0
2412.06.0

GOST Raised Face Flange Applications


  • Specialty Chemicals
  • Power Generation
  • Condensers
  • Chemical Equipment
  • Gas Processing
  • Pulp and Paper Industry
  • Sea Water Equipment
  • Pharmaceutical Equipment
  • Off-Shore Oil Drilling Companies
  • Petrochemicals
  • Heat Exchangers
  • Pharmaceuticals

GOST 12820-80 Flange Forging Process


GOST 12820-80 Flange Forging Process

Global Client Reference list & delivery schedule of GOST Flange


Location Days Clients
India 7
  • Indian oil corporation, India
  • L&T India
  • Essar India
  • BHEL India
  • NTPC India
  • WIPRO India
Malaysia 15
  • Saag Oil & Gas Sdn Bhd (Malaysia), Block C1, Petaling Jaya, Malaysia, 19-5, 47301 Petaling Jaya, Selangor, Malaysia
  • Malaysian Oil & Gas Services Council, Malaysia, Persiaran Petronas, Kuala Lumpur City Centre, 50088 Kuala Lumpur, Malaysia
  • Synergy Oil & Gas Engineering Sdn Bhd, Malaysia, B-07-02, Skypark @, Jalan USJ 25/1, One City, 47600 Subang Jaya, Selangor, Malaysia
  • Hablem Oil & Gas (M) Sdn Bhd, Malaysia, Lot K-7162 (Ground Floor), Bandar Seri Kerteh, 24300 Kerteh, Terengganu, Malaysia
United Arab Emirates (UAE) 15
  • Hexa Oil & Gas, UAE, Abu Dhabi - United Arab Emirates (UAE)
  • Al Masaood Oil & Gas, UAE, Abu Dhabi - United Arab Emirates (UAE)
Dubai 15
  • SPEC Oil & Gas FZCO- Dubai, Sheikh Mohammad Bin Zayed Rd - Dubai - United Arab Emirates (UAE)
  • Dragon Oil LLC -Dubai, Umm Al Hurair 2, Building 16, Executive Office Building- Dubai, UAE
  • Lazer Clean Middle East L.L.C, Dubai - United Arab Emirates (UAE)
  • Esterpol DIP, Dubai Investments Park 2 - Dubai - United Arab Emirates (UAE)
Indonesia 20
  • Pacific Oil & Gas Indonesia. PT- Indonesia, RT.14/RW.20, Kebon Melati, Central Jakarta City, Jakarta 10230, Indonesia
  • GE Oil & Gas- Indonesia, Batu Ampar, Batam City, Riau Islands 29444, Indonesia
  • Medco E&P Indonesia TUGU- Indonesia, Jawa Barat 16750, Indonesia
  • Mubadala Petroleum - Indonesia, DKI Jakarta, Daerah Khusus Ibukota Jakarta 12310, Indonesia
Singapore 15
  • Pacific Oil & Gas -Singapore, 1 Raffles Pl, Singapore 048624
  • Repsol Oil & Gas SEA Pte. Ltd. -Singapore, tower 2 Marina Bay Financial Centre, Singapore 018983
  • BP Singapore Pte Ltd -Singapore, 7 Straits View, #26-01 Marina One East Tower, Singapore 018936
  • Cosmo Oil International Pte Ltd -Singapore, 6 Battery Rd, Singapore 049909
UK 40
  • Solutia UK Ltd, Corporation Rd, Newport NP19 4XF, United Kingdom (UK)
  • Stepan UK Ltd, Bridge House, Bridge Street, Stalybridge SK15 1PH, United Kingdom (UK)
  • Univar UK Ltd, Block K/Leslie Caerphilly CF83 1BQ, United Kingdom (UK)
Australia 40
  • Scott Chemicals Australia Pty Ltd, 21/296 Bay Rd, Cheltenham VIC 3192, Australia
  • Wildcat Chemicals Australia, 15 Magnesium St, Narangba QLD 4504, Australia
  • Knight Equipment Australia PTY Ltd., Unit 3/1B Kleins Rd, Northmead NSW 2152, Australia
Italy 30
  • Ecolab Production Italy, Via A. Grandi, 9, 20089 Rozzano MI, Italy
  • Sabic Italia Spa, Via S. Clemente, 1, 20122 Milano MI, Italy
  • TEVA Pharmaceutical Industries (Italy), Via Terrazzano, 77, 20017 Rho MI, Italy
Germany 32
  • Evonik Industries AG, Rößlerstraße 1, 64293 Darmstadt, Germany
  • DEA German Petroleum AG, Überseering 40, 22297 Hamburg, Germany
  • Oiltanking GmbH Germany, Saarstraße 14, 63450 Hanau, Germany
Kuwait 12
  • Kuwait National Petroleum Company, Hamad Al Zuwayer St, Ahmadi, Kuwait
  • Kuwait Oil Tanker Company, Kuwait
  • Kuwait Drilling Company, Kuwait City, Kuwait
Oman 12
  • Oman Oil Service Station, Seeb, Oman
  • CC Energy Development S.A.L Oman, 3026 As Saruj St, Muscat, Oman
Qatar 15
  • SPIE Oil & Gas Services Doha LLC (Qatar), Cat Building, Al Saad - 4th Floor، Doha, Qatar
  • Qatar Petroleum Oil Refinery, Mesaieed, Qatar