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Stainless Steel Flanges manufacturer

Check Stainles Steel Forged Flange Price List & Class 150 SS Flange Dimensions

We are a leading Stainless Steel Flanges manufacturer and we produce flanges of all sizes and types. Flanges are components that fit piping products together. They could be welded or bolted. Some flanges have sockets welded onto them for better connection and grip. Dinesh Industries has all types of flanges from all grades of metallic material. Our stainless steel flange products come in different types as well. The SS blind flange is used with stainless steel piping systems to ensure the closure of pipelines. The blind flanges could be applied permanently with welding or temporarily with bolts and nuts. The SS weld neck flange has a welded neck on it which makes the connected point stronger and allows welding to be much easier.

Stainless Steel Flanges manufacturer

View Stainless Steel ASTM A182 Flanges Pressure Rating, SS Pipe Flange Size Range

The SS plate flange is essentially a ring or plate that has the inner diameter matching to the outer diameter of pipe so that it is attached to the pipe for other attachments to hold together. The stainless steel slip on flange is applicable to seamless pipes as it allows the pipes to slip through precisely and be welded at the connection. The SS threaded flange has threads through which the connection is made. There are different manufacturing procedures such as the forging through which the stainles steel forged flange is manufactured. We encourage customers to inquire us with any requirements.

Table of Content

Standard Specification of Stainles Steel Flange

SIZE: 1/2″ TO 36″ [10MM TO 900 MM]
SPECIFICATION ASTM, ASME/ANSI, AFNOR(NFE), DIN,  EN, BS, JIS Etc.
GRADE 316Ti, TP317/317L, TP304/304L, 304H, S32550, S32750, TP316/316L, TP347/347H, S31260, S31500,S31803, TP321/321H, S32760.
Standard ANSI Flanges, BS Flanges, DIN Flanges, EN Flanges, ASME Flanges
Class 600#, 2500#, 900#, 150#, 300#, 1500#
Form Plate flange, Threaded / Screwed flange, Welding neck flange, Ring type joint flange, Socket weld flanges, Tongue and Groove flange, Slip on flanges, Forged flanges, Flate Face flanges,Blind flanges, Spectacle blind flange, Long weld neck flange, Reducing flange, ASME B16.5 flanges

Stainless Steel Flange are Highly ductile, corrosion resistance and have higher strength due to additional carbon. Stainless steel is a family of alloy steels containing low carbon steel with a minimum chromium content of 10% or more by weight.

Class 150 SS Flange Dimensions

CLASS Nominal Pipe Size SS Slip On Flange SS Threaded Flange SS Socket Weld Flange SS Lap Joint Flange SS Blind Flange SS Weld Neck Flange
150 lb 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 Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
300 lb 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 Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
400 lb 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 Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
600 lb 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 Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
900 lb 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 Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
1500 lb 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 Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
2500 lb 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

Chemical Compatibility Of Stainless Steel Forged Flange

Type Carbon Manganese Phosphorus Sulphur Silicon Chromium Nickel Molybdenum
302 0.15 2.00 0.045 0.030 1.00 17.00/19.00 8.00/10.00 –
309 0.20 2.00 0.045 0.030 1.00 22.00/24.00 12.00/15.00 –
304L* 0.03 2.00 0.045 0.030 1.00 18.00/20.00 8.00/12.00 –
304* 0.08 2.00 0.045 0.030 1.00 18.00/20.00 8.00/10.50 –
309S 0.08 2.00 0.045 – 1.00 22.00/24.00 – –
317 0.08 2.00 0.045 0.030 1.00/1.00 18.00/20.00 11.00/15.00 3.00/4.00
310S 0.08 2.00 0.045 0.030 1.5 24.00/26.00 19.00/22.00 –
316* 0.08 2.00 0.045 0.030 1.00 16.00/18.00 10.00/14.00 2.00/3.00
310 0.25 2.00 0.045 0.030 1.5 24.00/26.00 19.00/22.00 –
316L* 0.03 2.00 0.045 0.030 1.00 16.00/18.00 10.00/14.00 2.00/3.00
347 0.08 2.00 0.040 0.030 0.5/1.00 17.00/19.00 9.00/12.00 0.5/0.75
317L 0.03 2.00 0.045 0.030 0.75 18.00/20.00 11.00/15.00 3.00/4.00
321 0.08 2.00 0.040 0.030 1.00 17.00/19.00 9.00/12.00 0.75/0.75

Mechanical Characteristics Of Stainless Steel Forged Flange

Type UNS Tensile
(ksi) min		 Yield
(ksi) min		 Elongation
min		 Hardness
(Brinell) max		 Hardness
(Rockwell B) max
302 S30200 75 30 40% in 2″ 183 88
304* S30400 75 30 40% in 2″ 183 88
304L* S30403 70 30 40% in 2″ 183 88
309 S30900 75 30 40% in 2″ 217 95
309S S30908 75 30 40% in 2″ 217 95
310 S31000 75 30 40% in 2″ 217 95
310S S31008 75 30 40% in 2″ 217 95
316* S31600 75 30 40% in 2″ 217 95
316L* S31603 70 25 35% in 2″ 217 95
317 S31700 75 30 35% in 2″ 217 95
317L S31703 75 30 35% in 2″ 217 95
321 S32100 75 30 40% in 2″ 183 88
347 S34700 75 30 40% in 2″ 183 88

Applications of SS Blind Flange

  • Flanges for Gas & Water Pipe Line
  • Flanges in Chemical Plants
  • Thermal, Nuclear and Solar Power Plants
  • Power Generation — pulverized coal burners
  • Petrochemicals and Refineries
  • Industrial Machineries
  • Oil & Gas Exploration
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