Guaranteed on time delivery
Gayatri Tubes is the leading producer and distributor that are fully involved in making and offering the excellent quality of Stainless Steel 304 / 304L / 304H Flanges. These flanges are designed according to the set national-international product quality standards. These flanges are developed in various standards, specifications, dimensions, sizes, face types and pressure ratings for fulfilling various application demands in industries. Also according to the specific demand of the clients, it is provided to them at cut-made specifications.
There are ranges of SS UNS S30400, S30403, S30409 Weld Neck Flanges we are providing to our esteem patrons. Flanges Types offered to the clients are SS 304 plate flanges; SS 304H lap joint flanges, SS 304 orifice flanges. Also, it is available in other types like SS 304L reducing flanges, SS 304L BLRF flanges, SS 304 ring type joint flanges, SS 304 threaded / screwed flanges, SS 304L RTJ flanges and SS 304 Socket-weld flanges, SS 304 bind flanges is too provided. Stainless steel 304 or WNR 1.4301 flanges are the ring of the steel that is designed for connecting the piping sections or for joining the pipe to the valve, pressure vessel, pump, etc. Stainless steel 304L or WNR 1.4307 flanges are joined together through bolting to the piping system through the process named welding or by threading. These SS flanges (304, 304L, 304H) flanges are appreciated globally for various properties found in it like accurate dimensions, excellent stress distributions, resistance to corrosion, sustains greater temperature and pressure load. Also, other properties like rust proof finishes, non-corrosiveness, and sturdy construction are responsible for making it an ideal selection.
These Flanges are used in applications like specialty chemicals, gas processing, pharmaceuticals, seawater equipment, pulp & paper industry, offshore oil drilling, petrochemicals, etc. SS 304 is an 18-8 standard austenitic stainless that is globally accepted and is extensively used SS available in different finishes/forms. It possesses good welding and forming ability. SS 3204L is a low carbon version alloy that doesn’t need post welding annealing and it is utilized in heavy gauge parts. SS 304H is a high carbon contended alloy that has found usability at elevated temperatures. The austenitic structure is providing a very good hardiness and even at cryogenic temperatures.
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST |
| SS 304 | S30400 | 1.4301 | Z7CN18‐09 | X5CrNi18-10 | SUS 304 | 304S31 | 08Х18Н10 |
| SS 304L | S30403 | 1.4306 / 1.4307 | Z3CN18‐10 | X2CrNi18-9 / X2CrNi19-11 | SUS 304L | 3304S11 | 03Х18Н11 |
| SS 304H | S30409 | 1.4948 | - | - | - | - | - |
| Specifications | ASTM A182 / ASME SA182 |
| Dimensions | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Size | 1/2" (15 NB) to 48" (1200NB) |
| Flange Face Type | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| Class / Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| DIN Flanges | DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673 |
| JIS Flanges | JIS B2220 5K, JIS B2220 10K, JIS B2220 16K, JIS B2220 20K |
| BS Flanges | BS4504 PN 6, BS 4504 PN 10, BS4504 PN 16, BS4504 PN 25, BS4504 PN 40, BS 4504 PN 64, BS 4504 PN 100, BS 4504 PN 160, BS 4504 PN 250, BS 10, BS Table D, BS Table E, BS Table F, BS Table H. |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 304 | 0.08 max | 2.0 max | 0.75 max | 0.045 max | 0.030 max | 18 – 20 | - | 8 – 11 | - | SS 304L | 0.035 max | 2.0 max | 1.0 max | 0.045 max | 0.03 max | 18 – 20 | - | 8 – 13 | - | SS 304H | 0.10 max | 2.0 max | 0.75 max | 0.045 max | 0.03 max | 18 – 20 | - | 8 – 10.5 | - |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
