Stainless Steel 310 Flanges manufacturers in India

Stainless Steel 310 Flanges

Refer UNS S31000 Blind / Long Weld Neck and ASTM A182 F310 Slip On Flange Mechanical Properties And Chemical Composition

What are the two main types of Stainless Steel 310 flanges?
Stainless steel 310 flanges are versatile components that are employed in joining a range of piping equipment in the system. The two main types of flanges in the range are standard and special flanges.

  • A standard flange lays down the dimension, face types, specifications, and surface finish required by a standardized flange to show optimum performance in the system. The flanges in this range are designed for definite pressures and temperatures with specified shapes and sizes. E.g. slip-on, weld neck, threaded, socket, and blind flanges.
  • A specialty flange is designed with similar properties as standard flange, however; they have some unique and special features, which help in differentiating them. E.g. orifice, long weld neck, expander, anchor, reducing weldolet, nipolet, and spectacle blind flanges.

UNS S31000 blind flange vs 310 Stainless Steel blank flange
UNS S31000 blind flange and 310 Stainless Steel blank flange are identical components, which are designed with no face or a hub. However, these modules can be differentiated based on certain key features.

  • UNS S31000 blind flange is a solid component that is employed to terminate the ends of hydraulic pressure systems. These modules are machined to ensure that mounting holes are present to mount them to the pipeline. They don’t have an opening to allow the flow to escape.
  • A blank flange is used to curtail the flow in the system allowing for repairs and new installations in the piping system. These blocking devices can also be used to permanently shut down the line.

What is the difference between RF and ASTM A182 F310 RTJ flange?
A flange face is a contact surface that is used to seal gasket material. RF and RTJ are two of the prominent face types in the 310 grade of stainless steel, which can be differentiated, based on certain features.

  • An RF flange is recognized as the gasket surface is positioned above the bolting line of the flange. These flanges concentrate the pressures of two mating flanges across a small surface thereby, increasing the strength of the seal. They are ideal for pressure classes of 150 and 300.
  • ASTM A182 F310 RTJ flange is employed in the system when there is a requirement of a metal-to-metal seal across mating flanges. These flanges are utilized in high temperatures and higher pressure classes applications.
stainless steel 310 flanges manufacturers in india
Table of Contents


SA182 Gr F310 Chemical Composition

Grade C Mn Si P S Cr Mo Ni N
SS 310 0.015 maximum 2.0 maximum 0.15 maximum 0.020 maximum 0.015 maximum 24.00 - 26.00 0.10 maximum 19.00 - 21.00 54.7 min

ASTM A182 F310 Equivalent

STANDARD WERKSTOFF NR. UNS JIS BS GOST AFNOR EN
Stainless Steel 310 Flanges 1.4841 S31000 SUS 310 310S24 20Ch25N20S2 - X15CrNi25-20

Stainless Steel 310 Flanges Mechanical Chart

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
7.9 g/cm3 1402 °C (2555 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 40 %

Specification Of ASME B16.5 SS 310 Flanges

Specification: ASTM A182 Stainless Steel 310 Flanges
Pressure Rating ANSI 2500 LBS, Class 150 LBS, 900 LBS, 1500 LBS, 300 LBS, 600 LBS
JIS 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
EN 10Bar 16Bar 6Bar 25Bar 40Bar
Coating Oil Black Paint, Anti-rust Paint, Zinc Plated, Cold and Hot Dip Galvanized, Yellow Transparent,
Production technique
  • Forged, Heat treated and machined
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
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
Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
Size Chart 1/2" to 48"

ASTM A182 F310 Spectacle Blind / Socket Weld Flange Manufacturer In India.


Types Of 310 Stainless Steel Flanges

2 Inch, Class 600, RF, BS EN 10204-3.1, ASTM A182 F310 Blind Flange

2 Inch, Class 600, RF, BS EN 10204-3.1, ASTM A182 F310 Blind Flange

DN 100, PN 50, ANSI B16.5, RF, ASTM A182 F310 Blind Flange

DN 100, PN 50, ANSI B16.5, RF, ASTM A182 F310 Blind Flange

10 Inch, SCH 80, 2500#, ANSI B16.5, A182 310 RTJ Blind Flange

10 Inch, SCH 80, 2500#, ANSI B16.5, A182 310 RTJ Blind Flange

4 Inch, Sch 40, 150LB, RF, ASTM A182 F310 Slip On Blind Flange

4 Inch, Sch 40, 150LB, RF, ASTM A182 F310 Slip On Blind Flange

1 Inch, ANSI B16.5, ASTM A182 F310 Lapped Joint Flange

1 Inch, ANSI B16.5, ASTM A182 F310 Lapped Joint Flange

1/2 to 24 inch, DN 15 to DN 600, Stub End Lap Joint Flanges

1/2 to 24 inch, DN 15 to DN 600, Stub End Lap Joint Flanges

4 Inch, 300#, ASTM A182 F310 Lap Joint Flange

4 Inch, 300#, ASTM A182 F310 Lap Joint Flange

ASTM A182 F3310 Lap Joint Flanges with Black Coating

ASTM A182 F3310 Lap Joint Flanges with Black Coating


SS 310 Ring Type Joint Flange Weight Chart, 310 Stainless Steel Flanges Dimensions And Price List.


UNS S31000 Blind Flanges Dimensions Chart

Standard Of SS 310 Flanges
CLASS NPS ASTM A182 F310 SORF Flanges ASTM A182 F310 NPT Flanges ASTM A182 F310 SW Flanges ASTM A182 F310 Loose Flanges ASTM A182 F310 BLRF Flanges ASTM A182 F310 WN Flanges
150# ½ 1 1 2 1 2 2
¾ 2 2 2 2 2 2
1 2 2 2 2 2 3
1¼ 3 3 3 3 3 3
1½ 3 3 3 3 4 4
2 5 5 5 5 5 6
2½ 8 8 8 8 7 10
3 9 9 9 9 9 11.5
3½ 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
1¼ 4.5 4.5 4 4.5 6 5
1½ 6.5 6.5 6 6.5 7 7
2 7 7 7 7 8 9
2½ 10 10 10 10 12 12
3 13 14 13 14.5 16 18
3½ 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
1¼ 4.5 4.5 4.5 4.5 6 4.5
1½ 6.5 6.5 6.5 6.5 8 8
2 8 8 8 8 10 10
2½ 12 12 12 11 15 14
3 15 15 15 14 20 18
3½ 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
1¼ 5 5 5 5 6 6
1½ 7 7 7 7 8 8
2 9 9 9 9 10 12
2½ 13 13 13 12 15 18
3 16 16 16 15 20 23
3½ 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
1¼ 10 10 10 10 10 10
1½ 14 14 14 14 14 14
2 22 22 22 21 25 24
2½ 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
1¼ 10 10 10 10 10 10
1½ 14 14 14 14 14 14
2 25 25 25 25 25 25
2½ 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
1¼ …. 18 …. 17 18 20
1½ …. 25 …. 24 25 28
2 …. 38 …. 37 39 42
2½ …. 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

Werkstoff Nr. 1.4841 SORF Flanges Weight In KG

Standard Class Dia. Bolt Circle Dia. Number of Bolts Bolt Size Dia. 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

A182 F310 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


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