Njabulo Stainless, located in Cape Town, South Africa, has earned a solid reputation as a reliable manufacturer and supplier of top-notch Stainless Steel 321 Flanges. With a strong focus on precision engineering, durability, and outstanding performance, Njabulo Stainless serves a variety of industries, including petrochemical, power generation, and marine sectors. The company is known for crafting corrosion-resistant flanges that adhere to international standards, ensuring long-lasting reliability even in tough environments. By blending cutting-edge technology with expert craftsmanship, Njabulo Stainless guarantees that each Stainless Steel 321 Flange delivers remarkable strength, heat resistance, and dependable service for critical industrial applications.
Stainless Steel 321 Flanges are made from titanium-stabilized austenitic stainless steels, primarily consisting of chromium (17–19%), nickel (9–12%), and titanium (0.5–1%). This unique composition boosts resistance to intergranular corrosion and oxidation at high temperatures. The material boasts impressive mechanical properties, featuring a tensile strength of about 515 MPa, a yield strength of around 205 MPa, and excellent elongation and toughness. It retains its strength and structural integrity even in high-stress, high-temperature situations, making Stainless Steel 321 perfect for applications that demand superior thermal stability and corrosion resistance.
| Standard | ASTM A182 / ASME SA182 |
| Dimensions | ANSI/ASME B16.5, B 16.47 A & B, B16.48, BS4504, BS 10, EN-1092, DIN |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges |
| Size | 1/2″ (15 NB) to 48″ (1200NB) |
| Class/Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 |
| Flange Face Type | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 5(C+N) – 0.70 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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We offers the best quality Stainless Steel 321 Flanges Njabulo Stainless,which has undergone intense testing to produce top quality and performance. The flange is thoroughly tested for meeting international standards and specifications. Products supplied by us are certified by recognized authorities for traceability and reliability in each batch. With modern technology and strict quality control, we ensure durability, corrosion resistance, and good mechanical properties. Njabulo Stainless stands by the delivery of flanges with the highest level of industry standards in functionality and safety.
SS 321 blind flanges are used to seal the end of a piping system. Crafted from stainless steel, they provide a robust, corrosion-resistant solution for maintaining system integrity and pressure.
SS 321 ring type joint flanges offer a secure, leak-proof seal in high-pressure environments. Made from stainless steel, they feature a ring groove design for reliable, corrosion-resistant performance in demanding applications.
SS 321 forged flanges are crafted from stainless steel for high strength and durability. They are ideal for demanding applications, offering excellent resistance to high temperatures, corrosion, and mechanical stress.
These flanges are widely utilized in industries that require exceptional heat and corrosion resistance. Typical applications include exhaust manifolds, furnace components, heat exchangers, and pressure vessels. In the petrochemical and oil & gas sectors, they are essential for piping systems and high-temperature process equipment. The aerospace industry also relies on them for engine components and thermal oxidizers. Their ability to resist oxidation and maintain mechanical strength at elevated temperatures makes them ideal for use in chemical plants, refineries, and marine environments where performance and reliability are crucial.
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