Njabulo Stainless, a well-respected manufacturer and supplier located in Cape Town, South Africa, specializes in top-notch Stainless Steel 446 Tubing designed to perform exceptionally in high-temperature and corrosive settings. Thanks to their cutting-edge manufacturing techniques and a strong commitment to international standards, the company provides tubing that guarantees strength, reliability, and durability. Njabulo Stainless offers Stainless Steel 446 Tubing in a variety of sizes and specifications, catering to industries like petrochemical, furnace construction, power generation, and marine, where outstanding oxidation and heat resistance are crucial for safe and efficient operations.
This Stainless Steel 446 Tubing is primarily made up of iron and chromium (up to 27%), with small amounts of manganese, silicon, and carbon, and very little nickel. This ferritic stainless steel grade is known for its remarkable resistance to oxidation, scaling, and sulfidation at high temperatures. It has moderate tensile strength (around 485 MPa), good hardness, and excellent thermal stability. The material keeps its structural integrity and resists deformation when exposed to heat, making it perfect for long-term use in high-temperature environments.
| Specifications | : | ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790 |
| Dimensions | : | ASTM, ASME and API |
| Standards | : | GB/T 14975-2002, GB/T 14976-2002, GB 13296-91, API, ASTM A213, ASTM A312, ASTM A269, JIS G3459, JIS G3463, JIS G3448, DIN17458 |
| 446 Pipes & Tubes | : | 1/2″ NB – 24″ NB |
| ERW 446 Pipes & Tubes | : | 1/2″ NB – 24″ NB |
| EFW 446 Pipes & Tubes | : | 6″ NB – 100″ NB |
| Tubing Size | : | 1/8″NB TO 30″NB IN |
| Specialized in | : | Large Diameter Size |
| Schedule | : | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Type | : | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
| Form | : | Round, Square, Rectangular, Hydraulic Etc |
| Length | : | Single Random, Double Random & Cut Length. |
| End | : | Plain End, Beveled End, Treaded |
| Grade | C | Mn | Si | P | S | Cr | MO | Ni | N | |
| 446 | Min | – | – | – | – | – | 23.00 | – | – | 0.10 |
| max | 0.2 | 1.5 | 0.75 | 0.040 | 0.030 | 30.00 | – | 0.50 | 0.25 |
| Density | 7.5 g/cm3 |
| Melting Point | 1510 °C (2750 °F) |
| Tensile Strength | Psi – 75,000 , MPa – 485 |
| Yield Strength (0.2%Offset) | Psi – 40,000 , MPa – 275 |
| Elongation | 20 % |
Contact us to get a quick quote for your requirement.
We rigorously tested to ensure unparalleled quality and performance. Each product is certified to meet international standards, including ISO and ASTM specifications. Advanced testing methods, such as fluid stability, ultrasonic, and corrosion resistance testing, ensure reliability, customer satisfaction and durability
Highly resistant to oxidation and corrosion, Stainless Steel 446 Seamless Tubing is used in high-temperature environments. It comes in various sizes, typically ranging from 1/8 inch to 12 inches in diameter and up to 60 feet in length, ensuring strength and durability without welds.
Offering excellent corrosion resistance, Stainless Steel 446 Welded Tubing is used where cost-effectiveness is key. Available in diameters from 1/4 inch to 8 inches and lengths up to 20 feet, it is ideal for general industrial applications and is welded for a more affordable solution
With superior resistance to high temperatures and corrosion, Stainless Steel 446 Heat Exchanger Tubes are designed for heat exchange systems. Typically available in diameters from 1/2 inch to 4 inches and custom lengths, they ensure efficient thermal transfer and durability under extreme conditions.
Offering excellent oxidation resistance, Stainless Steel 446 Instrumentation Tubing is used in precise measurement systems. Commonly found in sizes from 1/8 inch to 2 inches in diameter, it provides reliability and accuracy in high-temperature and high-pressure environments.
Known for its high corrosion resistance, Stainless Steel 446 Boiler Tubes are designed to withstand high-pressure and temperature in boilers. Typically available in diameters from 1 inch to 5 inches and lengths up to 30 feet, they are essential for reliable boiler operation.
Featuring excellent resistance to oxidation and corrosion, Stainless Steel 446 U-Tubes are used in compact heat exchangers. They generally come in diameters from 1/2 inch to 3 inches, with customizable lengths and bends to fit specific heat exchanger designs
Stainless Steel 446 Condenser Tubes are highly resistant to high-temperature corrosion. Available in sizes from 1/4 inch to 6 inches in diameter and varying lengths, these tubes are used in condenser systems to handle heat and corrosion effectively.
Offering exceptional corrosion and oxidation resistance, Stainless Steel 446 Fin Tubes enhance heat transfer efficiency. Typically available in diameters from 1/2 inch to 3 inches with fins of various lengths and configurations, they are used in heat exchangers and cooling systems.
Stainless Steel 446 Tubing is widely utilized in applications that require exceptional heat and corrosion resistance. It’s perfect for furnace components, heat exchangers, and exhaust systems that operate at high temperatures. In the petrochemical and power generation sectors, you’ll find it in reformer tubes, superheater tubes, and boiler equipment. The marine and offshore industries also rely on it for piping that faces saltwater and corrosive conditions. Plus, Stainless Steel 446 Tubing is used in incinerators, kilns, and chemical processing equipment, providing long-lasting durability and reliable performance.







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