321 Butt Weld Flanges
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Gnee Super Alloy (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of 321 butt weld flanges in China. If you're going to wholesale high quality 321 butt weld flanges made in China, welcome to get free sample from our factory. Good service and reasonable price are available.
321 weld neck flanges are a type of pipe flange made from stainless steel grade 321. These flanges are designed with a neck that extends from the main body of the flange, facilitating smooth welding to pipes or fittings. The 321 stainless steel material used in these flanges contains titanium, which stabilizes the structure against chromium carbide precipitation during welding, making it resistant to intergranular corrosion.
These flanges are commonly used in applications where high temperatures and corrosive environments are present, such as in chemical processing, petrochemical, and aerospace industries. The addition of titanium in the 321 stainless steel provides enhanced resistance to sensitization and subsequent corrosion in these harsh environments.
| Specification | Description |
|---|---|
| Material | Stainless Steel 321 |
| Size Range | 1/2" (15 NB) to 48" (1200 NB) |
| Pressure Rating | Class 150, Class 300, Class 600, Class 900, Class 1500, Class 2500 |
| Facing | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Standards | ASME B16.5, ASME B16.47 Series A & B, EN 1092-1, DIN, JIS, BS, MSS SP |
| Dimensions | ANSI/ASME B16.5, ANSI/ASME B16.47 Series A & B, EN 1092-1, DIN, JIS, BS, MSS SP |
| Material Test Reports | EN 10204 3.1, EN 10204 3.2, NACE MR0175 |
| Application | Chemical processing, Petrochemical, Oil and Gas, Power generation, Pharmaceutical, Food and Beverage, etc. |
321 weld neck flanges are available in various sizes and pressure ratings to suit different piping systems and requirements. They are typically manufactured to meet industry standards such as ASME B16.5 or ASME B16.47, ensuring compatibility and reliability in piping systems.
In summary, 321 weld neck flanges offer excellent corrosion resistance and high-temperature performance, making them ideal for demanding applications in industries where reliability and durability are paramount.
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