Description
Stainless Steel 317/ 317L Flanges
Stainless Steel 317 and 317L Flanges are molybdenum-bearing austenitic stainless steel flanges known for their superior resistance to pitting, crevice corrosion, and aggressive chemical environments. Produced in accordance with ASTM A182 / ASME SA182 standards, these SS 317/317L flanges are available in weld neck, slip on, blind, socket weld, threaded, and lap joint types. With excellent strength, improved weldability, and reliable performance in chloride-rich and acidic conditions, 317/317L stainless steel flanges are widely used in chemical processing, marine equipment, pulp and paper plants, and heat exchanger applications.
Specifications of Stainless Steel 317/ 317L Flanges
| Standards | GOST Flange, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092, BS, BS4504, BS 10, EN-1092, DIN, ANSI, ASME, DIN, MSS S44, ISO70051, ANSI/ASME B16.5, ASME/ANSI B16.5/16.36/16.47A/16.47B, B16.47 Series A & B, B16.48, EN |
|---|---|
| Pressure Rating ANSI | Class 1500, Class 150, Class 900, Class 2500, Class 300, Class 600, |
| Pressure Calculation in DIN | 10Bar, 16Bar, 25Bar, 40Bar, 6Bar, / PN16, PN64, PN40, PN25, PN10, PN6 |
| JIS | 16 K, 20 K, 5K, 10 K, 40 K, 63 K, 30 K, |
| UNI | 10Bar 16Bar 6Bar 25Bar 40Bar |
| EN | 6Bar 25Bar 40Bar 10Bar 16Bar |
| Most common Types | Threaded / Screwed / Forged / Plate |
| Production technique |
|
| Shapes and Types we produce | Large Male-Female (LMF), Ring Type Joint (RTJ), Flat Face (FF), Small Tongue, Small Male-Female (SMF),Raised Face (RF), Large Tongue & Groove, Groove, Lap-Joint Face (LJF) |
| Test | Direct-reading Spectrograph, Magnetic particle detector, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector |
| Equipment | Pushing Machine, Press machine, Bending machine, Sand-blasting machine, electric bevelling machine etc |
Size Range of 317/ 317L SS Flange
- UNS S31700 Flange : 1/2″ (15 NB) to 48″ (1200NB)
- SS A182 F317L Blind Flange : 1/2″ NB – 24″ NB
- ASTM A182 F317L Slip on Flange : 1/2″ NB – 12″ NB
Chemical Composition of SS 317/ 317L Flange
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 317 | min. | – | – | – | – | – | 18.0 | – | 11.0 | – |
| max. | 0.8 | 2.0 | 1.00 | 0.040 | 0.03 | 20.0 | 14.0 | – | ||
| 317L | min. | – | – | – | – | – | 18.0 | 3.00 | 11.0 | – |
| max. | 0.03 | 2.0 | 0.75 | 0.040 | 0.03 | 20.0 | 4.00 | 15.0 | – | |
Mechanical Analysis of 317/ 317L Stainless Steel Flange
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 317 | 515 | 205 | 35 | 95 | 217 |
| 317L | 515 | 205 | 35 | 95 | 217 |
Types of 317/ 317L Flange
 |  |  |  |
| Blind Flanges | Lap Joint Flanges | Long Weld Neck Flanges | Plate Flanges |
 |  |  |  |
| Reducing Flanges | Ring Type Joint Flanges | Slip On Flanges | Socket Weld Flanges |
 |  |  |  |
| Weld Neck Flanges | Tongue & Groove Flanges | Threaded / Screwed Flanges | Spectacle Blind Flanges |
317/ 317L Flanges Equivalent Grades
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST |
| Alloy 20 | N08020 | 2.4660 | Z2NCUD31-20AZ | NiCr20CuMo |
Stock of 317 Pipe Flange
| Stainless Steel 317 Flange | ASME SA182 F317 Blind Flange |
| 317 SS Slip on Flange | ASTM A182 F317L Threaded Flange |
| UNS S31700 Reducing Flange | Stainless Steel 1.4449 Socket Weld Flange |
| 317L Stainless Steel Weld Neck Flanges | SS A182 F317L Lap Joint Flanges |
| Stainless Steel 1.4449 Long Weld Neck Flanges | 317 SS Spectacle Blind Flanges |
| UNS S31700 Spades & Ring Spacers | ASME SA182 F317 Nipoflange |
| ASTM A182 F317L 5D Weldoflange | 317L Stainless Steel Flange Outlet |
| Stainless Steel 317 Forged Flanges | Stainless Steel 1.4449 Plate Flange |
| ASTM A182 F317L Ring Type Joint Flanges | UNS S31700 Raised Face Flanges |
| SS A182 F317L Tongue and Groove Flanges | 317 SS Male and Female Flange |
| 317L Stainless Steel Reducing Flanges | ASME SA182 F317 ASME B16.5 Flanges |
| Stainless Steel 317 Flanges | Stainless Steel 1.4449 BS 10 Flanges |
| UNS S31700 BS 4504 Flanges | ASTM A182 F317L EN 1092-1 Flanges |
| 317L Stainless Steel SORF Flange | 317 SS BLRF Flange |
| ASME SA182 F317 WNRF Flange | Stainless Steel 317 Series a Lap Joint Ring Flange |
| Stainless Steel 1.4449 PN16 blind flange | UNS S31700 Forged Socket Weld Pipe Flange |
| 317 SS Class 300 slip on flange | 317L Stainless Steel Slip On Weld Flange |
| ASTM A182 F317L Forged steel slip on flanges | ASME SA182 F317 Race face slip on flange |
| Stainless Steel 317 SWRF Flange | SS A182 F317L Forged blind flange |
| 317 SS groove weld neck flange | Stainless Steel 1.4449 Socket Weld Hub Flange |
| UNS S31700 threaded lap joint flange | ASME SA182 F317 Slip On Integral flange |
| SS A182 F317L Forged integral puddle flange | ASTM A182 F317L table e long weld neck |
| 317 SS Class 150 LBS Flange | SS A182 F317L PN10 Forged Flanges |
