Stainless Steel 321 Flanges Manufacturers In India

ASTM A182 Stainless Steel 321 Flanges

Refer ASTM A182 F321 Blind / Socket Weld / Weld Neck / UNS S32100 Slip On Flange Equivalent Table And Chemical Composition.



ASTM A182 Gr F321 Chemical Composition

Grade C Mn Si P S Cr Mo Ni N
SS 321 0.08 maximum 2 maximum 1.0 maximum 0.045 maximum 0.030 maximum 17.00 - 19.00 0.10 maximum 9.00 - 12.00 5(C+N) – 0.70 maximum
SS 321H 0.04 – 0.10 2 maximum 0.75 maximum 0.045 maximum 0.030 maximum 17.00 - 19.00 0.10 maximum 9.00 – 12.00 4(C+N) – 0.70 maximum

SA182 F321 Mechanical Properties

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1457 °C (2550 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

ASTM A182 F321 Flanges Specification

Specification: ASTM A182 Stainless Steel 321 Flanges
UNI 6Bar 10Bar 16Bar 25Bar 40Bar
Standards ASME/ANSI B16.5, API 590, ASME B16.47A/B, ASME B16.36, API7S-15, ISO 70051, EN 1092-1, DIN, B16.48, GOST, API7S-43, API 605, API 6A, BS 10, MSS SP44, BS1560-3.1, BS 4504, BS, EN-1092, EN, DIN, JIS B2220, B16.47 Series A & B, BS 1042
Most common types of Flanges Forged / Threaded / Screwed / Plate
Pressure Rating ANSI 2500 LBS, Class 150 LBS, 900 LBS, 1500 LBS, 300 LBS, 600 LBS
Production technique
  • Forged, Heat treated and machined
JIS 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
Size Chart 1/2" to 48"
Connect Type/ Flanges Face Type Flat Face (FF) Flanges, Large Male-Female (LMF) Flanges, Raised Face (RF) Flanges, Large Tongue & Groove, Groove, Lap-Joint Face (LJF) Flanges, Small Male-Female (SMF) Flanges, Small Tongue Flanges, Ring Type Joint (RTJ) Flanges
EN 10Bar 16Bar 6Bar 25Bar 40Bar
Coating Oil Black Paint, Anti-rust Paint, Zinc Plated, Cold and Hot Dip Galvanized, Yellow Transparent,
Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc

Types Of 321 Stainless Steel Flanges

10 Inch, Class 150 LB, SCH 40, ASTM A182 F321 WN Flange

10 Inch, Class 150 LB, SCH 40, ASTM A182 F321 WN Flange

30 Inch, Class 600 LB, RF, ASTM A182 F321 Weld Neck Flange

30 Inch, Class 600 LB, RF, ASTM A182 F321 Weld Neck Flange

12 Inch, SCH 40, RF, 150 LB, ASTM A182 F321 Weld Neck Flange

12 Inch, SCH 40, RF, 150 LB, ASTM A182 F321 Weld Neck Flange

PN16, DN80, EN1092-1 Type 11, ASTM A182 F321 WN Flange

PN16, DN80, EN1092-1 Type 11, ASTM A182 F321 WN Flange

150 LB, 1/2 Inch, RF, ASTM A182 F321 Stainless Steel Threaded Flange

150 LB, 1/2 Inch, RF, ASTM A182 F321 Stainless Steel Threaded Flange

4 Inch. SCH 80, ASME B16.5, F321 NPT Flanges

4 Inch. SCH 80, ASME B16.5, F321 NPT Flanges

2 Inch, 300 LB, RF, BS4504, A182 F321 Thread Flange

2 Inch, 300 LB, RF, BS4504, A182 F321 Thread Flange

 2 Inch x NPTF 1-1/2 Inch, RF, A182 F321 Screw Flange

2 Inch x NPTF 1-1/2 Inch, RF, A182 F321 Screw Flange


ASME B16.5 SS 321 Threaded / Long Weld Neck / Werkstoff No 1.4541 Plate Flange Manufacturer In Mumbai, India.


UNS S32100 Slip On Flange Temperature

ANSI/ASME B16.34 ANSI PRESSURE RATING
Temperature °F 150LB 300LB 400LB 600LB 900LB 1500LB 2500LB
-20 to 100 275 720 960 1440 2160 3600 6000
200 230 600 800 1200 1800 3000 5000
300 205 540 720 1080 1620 2700 4500
400 190 495 660 995 1490 2485 4140
500 170 465 620 930 1395 2330 3880
600 140 435 580 875 1310 2185 3640
650 125 430 575 860 1290 2150 3580
700 110 425 565 850 1275 2125 3540
750 95 415 555 830 1245 2075 3460
800 80 405 540 805 1210 2015 3360
850 65 395 530 790 1190 1980 3300
900 50 390 520 780 1165 1945 3240
950 35 380 510 765 1145 1910 3180
1000 20 320 430 640 965 1605 2675
1050 20 310 410 615 925 1545 2570
1100 20 255 345 515 770 1285 2145
1150 20 200 265 400 595 995 1655
1200 20 155 205 310 465 770 1285
1250 20 115 150 225 340 565 945
1300 20 85 115 170 255 430 715
1350 20 60 80 125 185 310 515
1400 20 50 65 95 145 240 400
1450 15 35 45 70 105 170 285
1500 10 25 35 55 80 135 230

ASTM A182 F321 Equivalent

STANDARD WERKSTOFF NR. UNS JIS EN
Stainless Steel 321 Flanges 1.4541 S32100 SUS 321 X6CrNiTi18-10
ASTM A182 F321H 1.4878 S32109 SUS 321H X12CrNiTi18-9

Stainless Steel 321 Flanges Weight Chart

Standard Class Diameter Bolt Circle Diameter Number of Bolts Bolt Size Diameter of Bolt Hole
AS4087 PN14 95 67 4 M12 14
AS 2129 Flange Table C 95 67 4 13 14
Table D 95 67 4 13 14
Table E 95 67 4 13 14
Table F 95 67 4 13 14
Table H 114 83 4 16 17
Table J 114 83 4 16 17
ANSI B16.5 ANSI 150 89 60 4 13 16
ANSI 300 95 67 4 13 16
ANSI 600 95 67 4 13 16
ANSI 900 121 83 4 19 22
ANSI 1500 121 83 4 19 22
ISO 7005 (DIN) Flange PN6 80 55 4 M10 11
PN10 95 65 4 M12 14
PN16 95 65 4 M12 14
PN20 90 60.5 4 M14 16
PN25 95 65 4 M12 14
PN40 95 65 4 M12 14

Check Class 150 ASTM A182 Gr F321 Stainless Steel Pipe Flanges Mechanical Properties, Price List, Weight Chart, Dimensions.


ASTM A182 F321H Blind Flanges Dimensions

Standard Of SS 321 Flanges
CLASS NPS ASTM A182 F321 SORF Flanges ASTM A182 F321 NPT Flanges ASTM A182 F321 SW Flanges ASTM A182 F321 Loose Flanges ASTM A182 F321 BLRF Flanges ASTM A182 F321 WN Flanges
150# ½ 1 1 2 1 2 2
¾ 2 2 2 2 2 2
1 2 2 2 2 2 3
3 3 3 3 3 3
3 3 3 3 4 4
2 5 5 5 5 5 6
8 8 8 8 7 10
3 9 9 9 9 9 11.5
11 12 11 11 13 12
4 13 13 13 13 17 16.5
5 15 15 15 15 20 21
6 19 19 19 19 27 26
8 30 30 30 30 47 42
10 43 43 43 43 70 54
12 64 64 64 64 123 88
14 90 90 90 105 140 114
16 106 98 98 140 180 140
18 130 130 130 160 220 165
20 165 165 165 195 285 197
22 185 185 185 245 355 225
24 220 220 220 275 430 268
CLASS NPS SORF NPT Flanges SW Loose BLRF WN
300# ½ 2 2 3 2 2 2
¾ 3 3 3 3 3 3
1 3 3 3 3 4 4
4.5 4.5 4 4.5 6 5
6.5 6.5 6 6.5 7 7
2 7 7 7 7 8 9
10 10 10 10 12 12
3 13 14 13 14.5 16 18
17 17 17 17 21 20
4 23.5 24 22 24 28 26.5
5 29 31 28 28 37 36
6 39 39 39 39 50 45
8 58 58 58 58 81 69
10 81 81 81 91 124 100
12 115 115 115 140 185 142
14 165 165 165 190 250 206
16 210 220 190 234 315 250
18 253 280 250 305 414 320
20 315 325 315 375 515 400
22 370 370 370 435 640 465
24 490 490 475 550 800 580
CLASS NPS SORF NPT Flanges SW Loose BLRF WN
400# ½ 2 2 2 2 2 3
¾ 3 3 3 3 3 3.5
1 3.5 3.5 3.5 3.5 4 4
4.5 4.5 4.5 4.5 6 4.5
6.5 6.5 6.5 6.5 8 8
2 8 8 8 8 10 10
12 12 12 11 15 14
3 15 15 15 14 20 18
21 21 21 20 29 26
4 26 26 26 25 33 35
5 31 31 31 29 44 43
6 44 44 44 42 61 57
8 67 67 67 64 100 89
10 91 91 91 110 155 125
12 130 130 130 152 226 175
14 191 191 191 210 310 233
16 253 253 253 280 398 295
18 310 310 310 345 502 360
20 378 378 378 420 621 445
22 405 405 405 455 720 505
24 539 539 539 615 936 640
CLASS NPS SORF NPT Flanges SW Loose BLRF WN
600# ½ 2 2 2 2 3 3
¾ 3 3 3 3 4 4
1 4 4 4 4 4 4
5 5 5 5 6 6
7 7 7 7 8 8
2 9 9 9 9 10 12
13 13 13 12 15 18
3 16 16 16 15 20 23
21 21 21 20 29 26
4 37 37 37 36 41 42
5 63 63 63 63 68 68
6 80 80 80 78 86 81
8 115 15 15 112 140 120
10 177 177 177 195 231 190
12 215 215 215 240 295 226
14 259 259 259 290 378 347
16 366 366 366 400 527 481
18 476 476 476 469 665 555
20 612 612 612 604 855 690
22 590 590 590 670 1000 720
24 876 876 876 866 1250 977
CLASS NPS SORF NPT Flanges SW Loose BLRF WN
900# ½ 6 6 6 6 4 7
¾ 6 6 6 6 6 7
1 7.5 7.5 7.5 7.5 9 8.5
10 10 10 10 10 10
14 14 14 14 14 14
2 22 22 22 21 25 24
31 31 31 25 32 31
3 36 36 36 29 35 36
4 53 53 53 51 54 53
5 83 83 83 81 87 86
6 110 110 110 105 115 110
8 172 172 172 190 200 187
10 245 245 245 277 290 268
12 326 326 326 371 415 372
14 400 400 400 415 520 562
16 459 459 459 488 619 685
18 647 647 647 670 880 924
20 792 792 792 868 1107 1164
24 1480 1480 1480 1659 2099 2107
CLASS NPS SORF NPT Flanges SW Loose BLRF WN
1500# ½ 6 6 6 6 4 7
¾ 6 6 6 6 6 7
1 8 8 8 8 9 9
10 10 10 10 10 10
14 14 14 14 14 14
2 25 25 25 25 25 25
36 36 36 35 35 36
3 48 48 48 47 48 48
4 73 73 73 75 73 73
5 132 132 132 140 140 132
6 165 165 165 170 160 165
8 260 260 260 286 302 275
10 436 436 436 485 510 455
12 667 667 667 749 775 690
14 940 940 940 890 975 940
16 1250 1250 1250 1250 1300 1250
18 1625 1625 1625 1475 1750 1625
20 2050 2050 2050 1775 2225 2050
24 2825 2825 2825 2825 3625 3325
CLASS NPS SORF NPT Flanges SW Loose BLRF WN
2500# ½ …. 7 …. 7 7 8
¾ …. 9 …. 8 10 9
1 …. 12 …. 12 12 13
…. 18 …. 17 18 20
…. 25 …. 24 25 28
2 …. 38 …. 37 39 42
…. 55 …. 53 56 52
3 …. 83 …. 80 86 94
4 …. 127 …. 122 133 146
5 …. 210 …. 204 223 244
6 …. 323 …. 314 345 378
8 …. 485 …. 471 533 576
10 …. 925 …. 897 1025 1068
12 …. 1300 …. 1262 1464 1608