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At Rajat Steel & Engg. Co. we manufacture and supply a wide range of high-quality Flanges for industrial applications. Our flanges are available in stainless steel, carbon steel, and Alloy Steel ensuring strength and durability. Designed for precision, they are ideal for pipelines, pressure systems, and heavy-duty operations. With years of experience, we deliver reliable solutions across oil & gas, power, marine, and infrastructure sectors.
Stainless Steel Flanges are made up of different stainless steel materials. There are different grades to the stainless steel depending on the material composition and the mechanical properties vary. Navstar Steel is a leading manufacturer and supplier of these flanges. The ASTM A182 Weld Neck Flange are made up of a super austenitic material that has good corrosion resistant properties with low carbon in its composition. The applications include utility scrubber assemblies. The flanges are also used in acid production and fertilizer production plants due to its corrosion resistance.
The Stainless Steel Pipe Flange is used to close a pipeline in these industries. The blind flange can be permanently fixed with welding or temporarily fixed by bolting for easy maintenance and removal. These flanges come in different sizes ranging from ½ inches to 48 inches in nominal bore size. There are also different types such as the SS Blind Flange Dimension belonging to different pressure classes. The pressure classes vary from 150 to 2500 and PN6 to PN64. These indicate the maximum pressure each flange can withstand while in operation.
The SS Flanges are welded neck raised face flanges. The welded neck supports these flanges to hold the pipes in place while welding. The raised face allows for maximum attachment for either welding or space for bolts and nuts. There are different brandings and standards of flanges such as the Stainless Steel Threaded Pipe Flange which are known for their strength, corrosion resistance and quality. We supply all kinds of stainless steel flanges in different standards, specifications and dimensions. Please contact us for more information on the SS Slip On Flanges and the prices. We are Leading Stainless Steel Flanges Manufacturers In India.
| Stainless Steel Flanges Specifications | |
|---|---|
| Specification | ASTM A182 / ASME SA182 |
| Size Chart of SS Blind Flanges | 1/2″ (15 NB) to 48″ (1200 NB) |
| Standards of ASTM A182 Stainless Steel Slip On Flanges | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS 4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure Rating of SS Weld Neck Flanges | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 |
| American Standard of SS Flanges | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges |
| Nominal Pipe Size | Outside Diameter of Flanges | Thickness of Flanges | Diameter of Raised Face | Diameter of Hub at Base | Length Thru Hub | Diameter or Bore | Diameter of Hub at Bevel | Radius of Fillet | Depth of Socket | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Welding Neck | Slip-On Threaded Socket | Lap Joint | Slip-on Socket | Lap Joint | ||||||||
| O | Q | R | X | Y | Y | Y | W | B | H | r | Z | |
| 1/2 | 3-1/2 | 7/16 | 1-3/8 | 1-3/16 | 1-7/8 | 5/8 | 5/8 | .88 | .90 | .84 | 1/8 | 3/8 |
| 3/4 | 3-7/8 | 1/2 | 1-11/16 | 1-1/2 | 2-1/16 | 5/8 | 5/8 | 1.09 | 1.11 | 1.05 | 1/8 | 7/16 |
| 1 | 4-1/4 | 9/16 | 2 | 1-15/16 | 2-3/16 | 11/16 | 11/16 | 1.36 | 1.38 | 1.32 | 1/8 | 1/2 |
| 1-1/4 | 4-5/8 | 5/8 | 2-1/2 | 2-5/16 | 2-1/4 | 13/16 | 13/16 | 1.70 | 1.72 | 1.66 | 3/16 | 9/16 |
| 1-1/2 | 5 | 11/16 | 2-7/8 | 2-9/16 | 2-7/16 | 7/8 | 7/8 | 1.95 | 1.97 | 1.90 | 1/4 | 5/8 |
| 2 | 6 | 3/4 | 3-5/8 | 3-1/16 | 2-1/2 | 1 | 1 | 2.44 | 2.46 | 2.38 | 5/16 | 11/16 |
| 2-1/2 | 7 | 7/8 | 4-1/8 | 3-9/16 | 2-3/4 | 1-1/8 | 1-1/8 | 2.94 | 2.97 | 2.88 | 5/16 | 3/4 |
| 3 | 7-1/2 | 15/16 | 5 | 4-1/4 | 2-3/4 | 1-3/16 | 1-3/16 | 3.57 | 3.60 | 3.50 | 3/8 | 13/16 |
| 3-1/2 | 8-1/2 | 15/16 | 5-1/2 | 4-13/16 | 2-13/16 | 1-1/4 | 1-1/4 | 4.07 | 4.10 | 4.00 | 3/8 | 7/8 |
| 4 | 9 | 15/16 | 6-3/16 | 5-5/16 | 3 | 1-5/16 | 1-5/16 | 4.57 | 4.60 | 4.50 | 7/16 | 15/16 |
| 5 | 10 | 15/16 | 7.5/16 | 6-7/16 | 3-1/2 | 1-7/16 | 1-7/16 | 5.66 | 5.69 | 5.56 | 7/16 | 15/16 |
| 6 | 11 | 1 | 8-1/2 | 7-9/16 | 3-1/2 | 1-9/16 | 1-9/16 | 6.72 | 6.75 | 6.63 | 1/2 | 1-1/16 |
| 8 | 13-1/2 | 1-1/8 | 10-5/8 | 9-11/16 | 4 | 1-3/4 | 1-3/4 | 8.72 | 8.75 | 8.63 | 1/2 | 1-1/4 |
| 10 | 16 | 1-3/16 | 12-3/4 | 12 | 4 | 1-15/16 | 1-15/16 | 10.88 | 10.92 | 10.75 | 1/2 | 1-5/16 |
| 12 | 19 | 1-1/4 | 15 | 14-3/8 | 4-1/2 | 2-3/16 | 2-3/16 | 12.88 | 12.92 | 12.75 | 1/2 | 1-9/16 |
| 14 | 21 | 1-3/8 | 16-1/4 | 15-3/4 | 5 | 2-1/4 | 3-1/8 | 14.14 | 14.18 | 14.00 | 1/2 | 1-5/8 |
| 16 | 23-1/2 | 1-7/16 | 18-1/2 | 18 | 5 | 2-1/2 | 3-7/16 | 16.16 | 16.19 | 16.00 | 1/2 | 1-3/4 |
| 18 | 25 | 1-9/16 | 21 | 19-7/8 | 5-1/2 | 2-11/16 | 3-13/16 | 18.18 | 18.20 | 18.00 | 1/2 | 1-15/16 |
| 20 | 27-1/2 | 1-11/16 | 23 | 22 | 5-11/16 | 2-7/8 | 4-1/16 | 20.20 | 20.25 | 20.00 | 1/2 | 2-1/8 |
| 24 | 32 | 1-7/8 | 27-1/4 | 26-1/8 | 6 | 3-1/4 | 4-3/8 | 24.25 | 24.25 | 24.00 | 1/2 | 2-1/2 |
| Type | C | Mn | P | S | Si | Cr | Ni | Mb |
|---|---|---|---|---|---|---|---|---|
| 302 | 0.15 | 2.00 | 0.045 | 0.030 | 1.00 | 17.00/19.00 | 8.00/10.00 | – |
| 304 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.00/20.00 | 8.00/10.50 | – |
| 304L | 0.03 | 2.00 | 0.045 | 0.030 | 1.00 | 18.00/20.00 | 8.00/12.00 | – |
| 309 | 0.20 | 2.00 | 0.045 | 0.030 | 1.00 | 22.00/24.00 | 12.00/15.00 | – |
| 309S | 0.08 | 2.00 | 0.045 | – | 1.00 | 22.00/24.00 | – | – |
| 310 | 0.25 | 2.00 | 0.045 | 0.030 | 1.5 | 24.00/26.00 | 19.00/22.00 | – |
| 310S | 0.08 | 2.00 | 0.045 | 0.030 | 1.5 | 24.00/26.00 | 19.00/22.00 | – |
| 315 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 16.00/18.00 | 10.00/14.00 | 2.00/3.00 |
| 316L | 0.03 | 2.00 | 0.045 | 0.030 | 1.00 | 16.00/18.00 | 10.00/14.00 | 2.00/3.00 |
| 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 |
| 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 |
| 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 |
| 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 |
| ASME B16.5 Stainless Steel Flanges | EN TYPE | DIN |
|---|---|---|
| WN – Welding Neck (WN) | EN-TYPE 11 | DIN 2631 DIN 2632 DIN 2633 DIN 2634 DIN 2635 |
| BL – Blind (BL) | EN-TYPE 05 | DIN 2527 |
| SO – Slip On (SO) | EN-TYPE 01/12 | |
| LJ – Lap Joint (LJ) | EN-TYPE 02/04 | DIN 2641 DIN 2642 DIN 2655 DIN 2656 |
| SW – Socket Weld (SW) | EN-TYPE 14 | |
| THR – Threaded (THR) | EN-TYPE 13 | DIN 2566 |
| LWN – Long Welding Neck / Integral(LWN) | EN-TYPE 21 | |
| Welding Collars | EN-TYPE 32/34 | |
| Welding for SS Flat Flanges | DIN 2573 DIN 2576 |
|
| SS Lap Joint Short Stub End | DIN 2673 | |
| Chromium Nickel SS Orifice Flanges, Chromium Stainless Steel Swivel Flanges, Spacer Rings, Spades Ferritic Stainless Steel Spectable Blinds, VSM, NFE, API 6A, JIS B2220, BS10/BS4504, GOST |
||
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
|---|---|---|---|---|---|---|---|
| SS 304 | 1.4301 | S30400 | SUS 304 | 304S31 | 08Х18Н10 | Z7CN18‐09 | X5CrNi18-10 |
| SS 304L | 1.4306 / 1.4307 | S30403 | SUS 304L | 3304S11 | 03Х18Н11 | Z3CN18‐10 | X2CrNi18-9 / X2CrNi19-11 |
| SS 304H | 1.4301 | S30409 | – | – | – | – | – |
| SS 310 | 1.4841 | S31000 | SUS 310 | 310S24 | 20Ch25N20S2 | – | X15CrNi25-20 |
| SS 310S | 1.4845 | S31008 | SUS 310S | 310S16 | 20Ch23N18 | – | X8CrNi25-21 |
| SS 316 | 1.4401 / 1.4436 | S31600 | SUS 316 | 316S31 / 316S33 | – | Z7CND17‐11‐02 | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 |
| SS 316L | 1.4404 / 1.4435 | S31603 | SUS 316L | 316S11 / 316S13 | 03Ch17N14M3 / 03Ch17N14M2 | Z3CND17‐11‐02 / Z3CND18‐14‐03 | X2CrNiMo17-12-2 / X2CrNiMo18-14-3 |
| SS 316Ti | 1.4571 | S31635 | SUS 316Ti | 320S31 | 08Ch17N13M2T | Z6CNDT17‐123 | X6CrNiMoTi17-12-2 |
| SS 317 | 1.4449 | S31700 | SUS 317 | – | – | – | – |
| SS 317L | 1.4438 | S31703 | SUS 317L | – | – | – | X2CrNiMo18-15-4 |
| SS 321 | 1.4541 | S32100 | SUS 321 | – | – | – | X6CrNiTi18-10 |
| SS 321H | 1.4878 | S32109 | SUS 321H | – | – | – | X12CrNiTi18-9 |
| SS 347 | 1.4550 | S34700 | SUS 347 | – | 08Ch18N12B | – | X6CrNiNb18-10 |
| SS 410 | 1.4006 | S41000 | SUS 410 | 410S21 | – | – | X12Cr13 |
| SS 446 | 1.4762 | S44600 | – | – | – | – | – |
| SS 904L | 1.4539 | N08904 | SUS 904L | 904S13 | STS 317J5 | Z2 NCDU 25-20 | X1NiCrMoCu25-20-5 |
Dimensions: ANSI/ASME B16.5, B16.28, MSS-SP-43.
| 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 |
| ANSI/ASME B16.34 | PRESSURE RATING CHART | ||||||
| Temperature °F | 150# | 300# | 400# | 600# | 900# | 1500# | 2500# |
| -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 |
