Njabulo Stainless is a top-notch manufacturer and supplier of Stainless Steel 321 Pipes, proudly based in Cape Town, South Africa. The company focuses on crafting high-quality austenitic stainless steel pipes that are designed to offer outstanding corrosion resistance and exceptional performance in high-temperature settings. Their Stainless Steel 321 Pipes are stabilized with titanium, which effectively prevents intergranular corrosion during welding and extended high-temperature use. With state-of-the-art manufacturing facilities and rigorous quality control measures, Njabulo Stainless caters to various industries, including chemical processing, petrochemical, power generation, and aerospace, delivering reliable and durable piping solutions for even the most demanding industrial applications.
| Standard | ASTM A312, A358 / ASME SA312, SA358 |
| Outside Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24″ NB available Ex-stock, OD Size Steel Tubes available Ex-stock |
| Thickness | 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Type | Seamless / ERW / Welded / Fabricated Pipes |
| Form | Round, Square, Rectangular, Oval, Hydraulic Etc |
| Length | Single Random, Double Random & Required Length |
| End | Plain End, Beveled End, Treaded |
| Outside Finish | 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements |
| Grade | C | N | Ni | Si | P | S | Mn | Cr | TI | |
|---|---|---|---|---|---|---|---|---|---|---|
| SS 321 | Min | – | – | 9.00 | – | – | – | – | 17.0 | 5(C+N) |
| max | 0.08 | 0.10 | 12.00 | 1.00 | 0.045 | 0.030 | 2.00 | 19.0 | 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 % |
Contact us to get a quick quote for your requirement.
These Stainless Steel 321 Pipes mainly consist of iron, chromium (17–19%), nickel (9–13%), and titanium as a stabilizing agent, along with trace amounts of carbon (up to 0.08%), manganese, and silicon. The addition of titanium enhances resistance to carbide precipitation, ensuring excellent weldability and intergranular corrosion resistance. These pipes boast a tensile strength of about 515–750 MPa, a yield strength of around 205–310 MPa, and impressive elongation and toughness. They also maintain superior oxidation resistance, thermal stability, and mechanical integrity under high-temperature operating conditions.
Corrosion resistant to high-temperature oxidation. Available in various sizes, typically from 1″ to 6″, with wall thicknesses ranging from 1.5mm to 5mm. It is ideal for structural and architectural applications requiring a polished, aesthetic appearance.
Highly resistant to intergranular corrosion and oxidation. Sizes range from 1/8″ to 24″ in diameter, with wall thicknesses from 1mm to 12mm. Suitable for high-temperature service and applications requiring high pressure.
Excellent resistance to oxidation and corrosion. Commonly produced in sizes from 1″ to 24″ in diameter, with wall thicknesses from 2mm to 10mm and used in construction and pipelines for moderate pressure and temperature conditions.
Corrosion resistant with enhanced strength for large diameter applications. Typically available in sizes from 12″ to 60″ diameter with wall thicknesses up to 20mm. It is ideal for high-pressure and high-temperature applications in the oil and gas industry.
Offers superior resistance to high-temperature oxidation and corrosion. Standard sizes range from 1/8″ to 12″ in diameter, with wall thicknesses from 1mm to 10mm. They are commonly used in various industrial and structural applications.
Corrosion resistance with good high-temperature stability. Available in sizes from 1″ to 24″ in diameter, with wall thicknesses ranging from 1.5mm to 12mm. Suitable for a variety of applications, including chemical and petrochemical industries.
Njabulo Stainless is a leading supplier, and stockist of high-quality Stainless Steel 317 Pipes in Cape Town, South Africa. Our products are widely used in various applications, and we are committed to delivering excellent service, resulting in high customer satisfaction. Our unique finishing techniques further distinguish us in the stainless steel industry. We are dedicated to consistently providing superior products and effectively meeting our customer’s needs.
Stainless Steel 321 Pipes are extensively utilized in industries that demand high-temperature corrosion resistance and long-lasting reliability. They are perfect for applications like boiler tubes, heat exchangers, superheaters, reheaters, and furnace components. In chemical and petrochemical plants, these pipes are essential for process piping that comes into contact with hot corrosive fluids and gases. Moreover, they find their place in power generation, aerospace, and other industrial sectors where high-temperature stability and corrosion resistance are crucial. The blend of durability, heat resistance, and structural integrity makes 321 pipes a go-to choice for challenging industrial environments.
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