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ASTM A240 F904L AWWA C207 Ring Flanges SOFF Stainless Steel Forged Flanges
AWWA C207 is a standard published by the American Water Works Association (AWWA) that covers steel pipe flanges for waterworks service. AWWA C207 Table 2 specifies the dimensions and requirements for Class D slip-on flanges. Class D slip-on flanges are commonly used in water and wastewater treatment plants, water distribution systems, and other waterworks applications. They are suitable for joining pipes, valves, and fittings in water pipelines, where the operating pressure does not exceed the specified maximum working pressure of 175 psi.
Stainless Steel Flange ASME SA182 F904L Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS | EN | AFNOR | JIS | BS | KS |
| SS 904L | 1.4539 | N08904 | X1NiCrMoCu25-20-5 | Z2 NCDU 25-20 | SUS 904L | 904S13 | STS 317J5L |
Chemical Composition of Grade 904L Stainless Steel Flanges
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
| SS 904L | 0.020 max | 2.00 max | 1.00 max | 0.040 max | 0.030 max | 19.00 – 23.00 | 4.00 – 5.00 max | 23.00 – 28.00 | 1.00 – 2.00 |
Mechanical Properties of ASTM A182 / SA 182 SS 904L Pipe Flanges
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.95 g/cm3 | 1350 °C (2460 °F) | Psi – 71000 , MPa – 490 | Psi – 32000 , MPa – 220 | 35 % |
AWWA C207 Flanges Specification and Standards
| Specifications | AWWA C207 Flanges |
|---|---|
| AWWA Flange Standards | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flanges. |
| ASME B16.5 AWWA Flange size range | 1/2" (15 NB) to 48" (1200NB) DN10~DN5000 |
| AWWA Flange Standard AWWA | 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K |
| Main Types | Forged / Threaded / Screwed / Plate |
| Most common types of AWWA Flanges |
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| Connect Type/ Flange Face Type | Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, , Groove |
| AWWA Flanges Standard | ANSI DIN, GOST, AWWA, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc.
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| Key markets and industries for AWWA Flangeo |
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| AWWA C207 Flanges Application |
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Stainless Steel Types and Raw Materials
| 304 | 18-8 Chromium Nickel Austenitic Stainless Steel |
| 316L | Low carbon, Chromium Nickel Molybdenum Austenitic Stainless Steel |
| 321 | Titanium Stabalized 18-8 Chromium Nickel Austenitic Stainless Steel |
| 410 | 12% Straight Chromium Marensitic Stainless steel |
| 904L | High Nickel Molybdenum Super Austenitic Stainless Steel |
| UNS S31803 | Ferritic/Austenitic Duplex Stainless Steel |
| UNS S32750 | Ferritic/Austenitic Super Duplex Stainless Steel |
| UNS S31254 | High Moly Austenitic Stainless Steel |
Applications
Water Distribution Systems: Class D slip-on flanges are widely used in water distribution systems, including municipal water supply networks, industrial water systems, and irrigation systems. They are used to connect pipes, valves, and fittings, allowing for easy installation, maintenance, and repair of the pipeline system.
