Stainless Steel Flanges Supplier in Vadodara
Forged and plate flanges in stainless steel and nickel alloys, ½" to 24", Class 150 to 2500.
Stainless Steel Flanges in Vadodara
Flanges join pipes, valves, pumps and equipment, and they have to match the pipe material. We supply stainless steel flanges alongside our pipes, so you can buy matching grades and sizes from one supplier.
Flanges are available forged (ASTM A182) or cut from plate, in standard ASME B16.5 and EN 1092-1 dimensions or made to your drawing — including flanges in Inconel, Incoloy and Monel for special service.
Applications
- Chemical and pharma process piping
- Refinery and petrochemical lines
- Water treatment and RO plants
- Dairy and food plants
- Valve and pump connections
- Pressure vessels and tanks
Stainless Steel Flanges specifications
| Grades | F304, F304L, F316, F316L, F321, F310, F904L, duplex F51, Inconel, Incoloy, Monel |
|---|---|
| Types | Weld neck, slip-on, blind, socket weld, threaded, lap joint, plate, spectacle blind, custom rings |
| Size range | ½" (15 NB) to 24" (600 NB); larger to drawing |
| Pressure class | Class 150, 300, 600, 900, 1500, 2500; PN 6 to PN 100 |
| Facing | Raised face (RF), flat face (FF), ring type joint (RTJ) |
| Standards | ASME B16.5, B16.47, B16.48, EN 1092-1, BS 4504, DIN, ANSI |
| Material spec | ASTM A182 (forged), A240 (plate flanges), B564 (nickel alloys) |
| Test certificate | EN 10204 3.1; PMI and TPI on request |
Types of Stainless Steel Flanges
Weld neck flange (WNRF)
Tapered hub butt-welded to the pipe for high pressure and temperature.
Ask priceSlip-on flange (SORF)
Slides over the pipe and is fillet welded — easy to align, for lower pressures.
Ask priceSocket weld & threaded
For small-bore piping up to about 2"; threaded types need no welding.
Ask priceGrades available
| Grade | EN | UNS | Tensile (MPa, min) | Yield (MPa, min) | Typical use |
|---|---|---|---|---|---|
| SS 304 Flanges | 1.4301 | S30400 | 515 | 205 | Kitchen and food equipment |
| SS 304L Flanges | 1.4307 | S30403 | 485 | 170 | Welded storage tanks |
| SS 316 Flanges | 1.4401 | S31600 | 515 | 205 | Pharma and API plants |
| SS 316L Flanges | 1.4404 | S31603 | 485 | 170 | Pharma reactors and vessels |
| SS 321 Flanges | 1.4541 | S32100 | 515 | 205 | Exhaust manifolds and expansion joints |
| SS 310S Flanges | 1.4845 | S31008 | 515 | 205 | Furnace parts and muffles |
| SS 904L Flanges | 1.4539 | N08904 | 490 | 220 | Sulphuric and phosphoric acid plants |
| Duplex 2205 Flanges | 1.4462 | S32205 / S31803 | 655 | 450 | Oil and gas piping |
Values are typical minimums per ASTM A240 for flat products; long products follow A276 / A479. Actual values are on the mill test certificate.
How to calculate SS Flanges weight
Standard flange weights come from the ASME B16.5 tables. For a plate flange: Weight (kg) ≈ (π/4) × (OD² − ID²) × T × 0.00000793, with dimensions in mm (subtract bolt holes).
Stainless Steel Flanges — FAQs
Which types of SS flanges do you supply?
Weld neck, slip-on, blind, socket weld, threaded, lap joint and plate flanges, plus custom rings and spectacle blinds to drawing.
Do you supply flanges in Inconel or Monel?
Yes. Along with stainless steel, we supply flanges in nickel alloys such as Inconel, Incoloy and Monel for special service.
What is the difference between Class 150 and Class 300 flanges?
The class is the pressure rating. A Class 300 flange is thicker and has more or larger bolts than a Class 150 flange of the same size, and handles higher pressure.
Related products
Stainless Steel Sheet
Cold rolled and hot rolled SS sheets in all common grades, thicknesses and finishes — stocked in Vadodara and cut to your size.
Stainless Steel Plate
Hot rolled SS plates for pressure vessels, heat exchangers and heavy fabrication — 3 mm to 80 mm thick.
Stainless Steel Coil
SS coils, slit coils and shims from 0.1 mm to 12 mm — our speciality — for tube mills, press shops and fabricators.
Buying guides
Get today's Stainless Steel Flanges rate
Tell us the grade, size, finish and quantity. We check stock and send a per-kg rate with dispatch date — usually the same working day.
- Rates direct from Vadodara stock
- Mill test certificate with every lot
- Cut-to-size and delivery all over India