Stainless Steel 316L Flanges Manufacturer in India
SS 316L stainless steel is a low-carbon austenitic grade that is enriched with molybdenum and has good corrosion resistance, particularly in chloride-contaminated and chemically hostile conditions. The low carbon content also reduces the risk of crystals forming during welding, and molybdenum increases the pitting, crevice corrosion, and chemical attack resistance and thus it is very reliable to the harsh industrial conditions. SS 316L Flanges find popular application in piping lines where corrosion resistance, mechanical strength, hygiene and long life are very important. These flanges are effective in corrosive environments, high-pressure, and high moisture which maintain high structural integrity, leakage-free connections, and long life span in industrial use like marine, chemical processing, pharmaceutical, food processing, and in offshore operations.
Table of Contents
- What Are SS 316L Flanges?
- A182 316L Flange Specification Table
- Chemical Composition of SS 316L Flanges
- Mechanical Properties of 316L Stainless Steel WNRF Flanges
- Different Sizes of SS 316L Slip-On Flange
- Equivalent Material of SS 316L Flanges
- SS UNS S31603 Flange Weight Chart
- Pressure Rating Chart of ANSI SS 316L Blind Flanges
- Types of Stainless Steel Flanges
- Price Chart of SS 316L Flanges
- Frequently Asked Questions (FAQ)
What Are SS 316L Flanges?
SS 316L flanges are produced according to the standards provided in the ASTM A182 F316L, and manufactured using forged and rolled stainless steel to be utilized in high-performance piping structures. This grade has a low level of carbon and includes molybdenum that offers it strong resistance against corrosion due to chloride, acid, and harsh environments of chemicals. Reduced carbon level also prevents the occurrence of carbide precipitation during the welding process, and therefore, SS 316L flanges are very useful in fabrication intensive and welded applications. These flanges are actually designed for systems that run in harsh conditions of chemical exposure, high humidity, and harsh industrial environments. The SS 316L flanges are widely applied in chemical plants, in pharmaceutical and biotechnology facilities, in the desalination and seawater systems, offshore plants, food and beverage processing plants, and other sectors where high dependability, purity, and long service life are crucial.
A182 316L Flange Specification Table
| Feature | Specification Details |
| Material Specification | ASTM A182 / ASME SA182 (Forged or Rolled Alloy and Stainless Steel) |
| Flange Standards | ANSI, ASME, BS, DIN, EN, etc. |
| Pressure Ratings (Class) | 150#, 300#, 600#, 900#, 1500#, 2500# |
| Pressure Ratings (PN) | PN6, PN10, PN16, PN25, PN40, PN64, etc. |
| Size Range | 1/2? (15 NB) to 48? (1200 NB) |
| Manufacturing Standards | ANSI/ASME B16.5, B16.48, B 16.47 Series A & B, BS 10, BS4504, EN-1092, DIN, etc. |
Chemical Composition of SS 316L Flanges
The chemical composition table of SS 316L flanges is given below, that provide a detailed information about the different metals used to make this material.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 316L | 0.035 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 16.0 - 18.0 | 2.0 - 3.0 | 10.0 - 14.0 | 68.89 min |
Mechanical Properties of 316L Stainless Steel WNRF Flanges
The mechanical properties help you to know about the limits of the material. The SS 316L flanges' detailed mechanical properties are given below.
| Property | Density | Melting Point | Tensile Strength (min) | Yield Strength (min) | Elongation |
| SS 316L | 8.0 g/cm- | 1399 -C (2550 -F) | 75,000 Psi (515 MPa) | 30,000 Psi (205 MPa) | 35% |
Different Sizes of SS 316L Slip-On Flange
The SS 316L flanges come in different sizes, and the information about this is given below.
| NPS | OD (O) | Thk (Q) | RF (R) | Hub (X) | LTH (Y) Weld | LTH (Y) Slip | Bore (B) Slip | Bore (B) Lap | Bevel (W) | Fillet (r) | Socket (Z) |
| 1/2 | 3-1/2 | 7/16 | 1-3/8 | 1-3/16 | 1-7/8 | 5/8 | 0.88 | 0.90 | 0.84 | 1/8 | 3/8 |
| 3/4 | 3-7/8 | 1/2 | 1-11/16 | 1-1/2 | 2-1/16 | 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 | 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 | 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 | 1.95 | 1.97 | 1.90 | 1/4 | 5/8 |
| 2 | 6 | 3/4 | 3-5/8 | 3-1/16 | 2-1/2 | 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 | 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 | 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 | 4.07 | 4.10 | 4.00 | 3/8 | 7/8 |
| 4 | 9 | 15/16 | 6-3/16 | 5-5/16 | 3 | 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 | 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 | 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 | 8.72 | 8.75 | 8.63 | 1/2 | 1-1/4 |
| 10 | 16 | 1-3/16 | 12-3/4 | 12 | 4 | 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 | 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 | 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 | 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 | 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 | 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 | 24.25 | 24.25 | 24.00 | 1/2 | 2-1/2 |
Equivalent Material of SS 316L Flanges
The SS 316L flanges are manufactured in different types and standards. Some of the most common standard is given below.
| North America (UNS) | Germany (Werkstoff) | Europe (EN) | Japan (JIS) | United Kingdom (BS) | Russia (GOST) | France (AFNOR) |
| S31603 | 1.4435 | X2CrNiMo17-12-2 | SUS 316L | 316S11 | 03Ch17N14M3 | Z3CND17-11-02 |
| - | - | X2CrNiMo18-14-3 | - | 316S13 | 03Ch17N14M2 | Z3CND18-14-03 |
SS UNS S31603 Flange Weight Chart
The weight chart helps you to get the estimated weight of your material, and the SS 316L flanges' weight chart is given below.
| Pipe Size (NPS) | DN | O.D. (O) | Thk (C) | Hub Dia (X) | RF (G) | LTH (Y) | Bolt Circle (BC) | Hole Dia (BH) | No. Bolts | Bolt Dia | KG | LB |
| 1/2" | 15 | 89.0 | 11.2 | 30.2 | 35.1 | 15.7 | 60.5 | 15.8 | 4 | 1/2" | 0.4 | 0.9 |
| 3/4" | 20 | 98.5 | 12.7 | 38.1 | 42.9 | 15.7 | 69.9 | 15.8 | 4 | 1/2" | 0.7 | 1.5 |
| 1" | 25 | 108.0 | 14.2 | 49.3 | 50.8 | 17.5 | 79.3 | 15.8 | 4 | 1/2" | 0.8 | 1.8 |
| 1-1/4" | 32 | 117.5 | 15.7 | 58.7 | 63.5 | 20.6 | 88.9 | 15.8 | 4 | 1/2" | 1.2 | 2.6 |
| 1-1/2" | 40 | 127.0 | 17.5 | 65.0 | 73.2 | 22.4 | 98.6 | 15.8 | 4 | 1/2" | 1.5 | 3.3 |
| 2" | 50 | 152.5 | 19.1 | 77.7 | 91.9 | 25.4 | 120.7 | 19.1 | 4 | 5/8" | 2.3 | 5.1 |
| 2-1/2" | 65 | 178.0 | 22.4 | 90.4 | 104.6 | 28.4 | 139.7 | 19.1 | 4 | 5/8" | 3.7 | 8.1 |
| 3" | 80 | 190.5 | 23.9 | 108.0 | 127.0 | 30.2 | 152.4 | 19.1 | 4 | 5/8" | 4.1 | 9.0 |
| 3-1/2" | 90 | 216.0 | 23.9 | 122.2 | 139.7 | 31.8 | 177.8 | 19.1 | 8 | 5/8" | 5.1 | 11.2 |
| 4" | 100 | 228.5 | 23.9 | 134.9 | 157.2 | 33.3 | 190.5 | 19.1 | 8 | 5/8" | 5.9 | 13.0 |
| 5" | 125 | 254.0 | 23.9 | 163.6 | 185.7 | 36.6 | 215.9 | 22.4 | 8 | 3/4" | 7.0 | 15.4 |
| 6" | 150 | 279.5 | 25.4 | 192.0 | 215.9 | 39.6 | 241.3 | 22.4 | 8 | 3/4" | 8.4 | 18.5 |
| 8" | 200 | 343.0 | 28.4 | 246.1 | 269.7 | 44.5 | 298.5 | 22.4 | 8 | 3/4" | 13.0 | 28.6 |
| 10" | 250 | 406.5 | 30.2 | 304.8 | 323.9 | 49.3 | 362.0 | 25.4 | 12 | 7/8" | 18.0 | 39.5 |
| 12" | 300 | 482.5 | 31.8 | 365.3 | 381.0 | 55.6 | 431.8 | 25.4 | 12 | 7/8" | 29.0 | 64.0 |
| 14" | 350 | 533.5 | 35.1 | 400.1 | 412.8 | 57.2 | 476.3 | 28.5 | 12 | 1" | 39.0 | 86.0 |
| 16" | 400 | 597.0 | 36.6 | 457.2 | 469.9 | 63.5 | 539.8 | 28.5 | 16 | 1" | 47.0 | 103.0 |
| 18" | 450 | 635.0 | 39.6 | 505.0 | 533.4 | 68.3 | 577.9 | 31.8 | 16 | 1-1/8" | 57.0 | 126.0 |
| 20" | 500 | 698.5 | 42.9 | 558.8 | 584.2 | 73.2 | 635.0 | 31.8 | 20 | 1-1/8" | 76.0 | 167.0 |
| 24" | 600 | 813.0 | 47.8 | 663.4 | 692.2 | 82.6 | 749.3 | 35.1 | 20 | 1-1/4" | 97.0 | 214.0 |
Pressure Rating Chart of ANSI SS 316L Blind Flanges
The detailed pressure rating of the SS 316 Flanges is given below.
| 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 |
Types of Stainless Steel Flanges
Slip-On Flanges
Slip-on flanges are easy to install and are a part that slips over the pipe and is welded both inside and outside.
Weld Neck Flanges
These are high-strength flanges with long tapered hub that are suitable for high-pressure applications.
Blind Flange
A type of piping used to seal the end of a pipe or the opening of a valve.
Socket Weld Flanges
These are like the slip-on flanges with a socket through which the pipe is inserted.
Threaded Flanges
Flanges that have internal threads to be connected by not welding.
Lap Joint Flanges
Used with stub ends for easy alignment and disassembly
Orifice Flanges
Specially designed flanges for flow measurement applications
Long Weld Neck Flanges
Extended neck flanges for special piping configurations
Reducing Flanges
Flanges with different bore sizes on each face
Spectacle Blind Flanges
Two metal discs for flow isolation in piping systems
Different Range of stainless steel 316L Flanges
| SS 316L Weld Neck Flanges | Stainless Steel 316L EN 1092-1 Flanges |
| SS 316L Long Weld Neck Flanges | Stainless Steel DIN 1.4435 Orifice Flange |
| SS 316L Slip-on Flanges | Stainless Steel BS 316S11 Spectacle Blind Flanges |
| Stainless 316L SORF Flanges | Stainless Steel 316L BS 4504 Flanges |
| SS 316L Socket Weld Flanges | Stainless Steel UNS S31603 Flanges |
| ASME SA182M SS 316L SWRF Flange | ANSI 316L Stainless Steel Blind Flange |
| Steel 316L Threaded Flanges | Stainless Steel 316L Forged Flanges |
| Stainless Steel 316L WNRF Flange | Stainless Steel SUS 316L Reducing Flanges |
| SS 316L Flat Flange | A182 SS 316L Square Flanges |
| SS 316L Ring Type Joint Flanges | Stainless Steel 316L Flanges |
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Price Chart of SS 316L Flanges
The price of SS 316L Flanges is depend on many factors like sizes, grades, and other things, and the table given below gives the estimated price of this material according to some countries.
| Product Description | Price in India (INR) | Price in UAE (AED) |
| ASTM A182 Gr F316L Flanges | Rs. 850.46 | UAE Dirham 44.09 |
| ASME SA182 F316L Pipe Flanges | Rs. 1417.44 | UAE Dirham 73.49 |
| ASTM A182 Grade F316L SO (Slip-On) Flanges | Rs. 1771.79 | UAE Dirham 91.86 |
| ASTM A182 316L SS Blind Flanges | Rs. 2480.51 | UAE Dirham 128.60 |
| ASTM A182 F316L Plate Flanges | Rs. 4252.31 | UAE Dirham 220.46 |
Frequently Asked Questions (FAQ)
The SS 316L flanges are stainless steel pipe connectors made from low-carbon 316L grade steel, designed for strong corrosion resistance and safe use in welded piping systems.
The SS 316L flanges have lower carbon content than SS 316, which makes them better for welding and reduces the risk of corrosion at welded joints.
Mots common types include weld neck, slip-on, blind, socket weld, and threaded flanges.
The SS 316L flanges offer excellent resistance to corrosion, especially against chlorides, moisture, chemicals, and salty environments.
They perform reliably in high-temperature and high-pressure conditions, maintaining strength, stability, and leak-proof connections in demanding industrial systems.
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