Njabulo Stainless is a reputable manufacturer and supplier of Stainless Steel 439 Pipes, proudly based in Cape Town, South Africa. The company is committed to delivering top-notch stainless steel products that adhere to global standards for durability, corrosion resistance, and precision. Their Stainless Steel 439 Pipes are celebrated for their outstanding oxidation resistance, weldability, and formability, making them a smart and cost-effective choice compared to austenitic grades. With a strong focus on innovation and quality assurance, Njabulo Stainless serves various industries, including automotive, construction, heat exchangers, and exhaust systems, providing reliable piping solutions for even the most demanding applications.
These Stainless Steel 439 Pipes are primarily made up of iron, chromium (17–19%), and titanium for stabilization, while keeping carbon and nickel content very low. This ferritic stainless steel alloy boasts excellent corrosion resistance, particularly against stress corrosion cracking and oxidation at high temperatures. It offers impressive tensile strength ranging from approximately 415–600 MPa and a yield strength of around 240 MPa, along with good ductility and toughness. Additionally, these pipes demonstrate excellent thermal conductivity, high strength, and remarkable resistance to scaling and pitting under various service conditions.
| Specifications | ASTM A/ASME SA268/A731 CL |
| Dimensions | ASTM, ASME and API |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Wall Thickness | Sch 5s, 10s, 40s, 80s, 160, XXS |
| Size – Seamless 439 Pipes | 1/2″NB – 24″NB |
| ERW 439 Pipes | 1/2″ NB – 24″ NB |
| EFW 439 Pipes | 6″ NB – 100″ NB |
| Form | Round, Square, Rectangular, Hydraulic Etc |
| Types | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
| End | Plain End, Beveled End, Treaded |
| Length | Single Random, Double Random & Cut Length. (Custom Sizes Available as per customers requirement) |
| Grade | C | Mn | Si | P | S | Cr | MO | Ni | CU | |
| 439 | Min | – | – | – | – | – | 12.0 | – | – | – |
| max | 0.15 | 1.00 | 1.00 | 0.04 | 0.03 | 14.0 | – | – | – | |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) | Brinell (HB) | ||||
| 439 | 95,000 | 50,000 | 25 | – | 175 |
Contact us to get a quick quote for your requirement.
We ensures the highest quality standards for Stainless Steel 439 Pipes through rigorous testing and certification processes. Every pipe goes through extensive tests, including chemical analysis, mechanical testing, and dimensional inspection. In this regard, we provide suitable certificates like Mill Test Certificate (MTC) and ISO certifications to make sure every product stands as a reliable brand and follows the market norms.
Stainless Steel 439 Square Pipes offer excellent corrosion resistance and are used in applications requiring a robust structure. They typically come in sizes ranging from 1/2″ to 8″, with wall thicknesses varying based on the application.
These pipes offer superior corrosion resistance and are used in high-temperature environments. They are available in sizes from 1/4″ to 12″ in diameter, with wall thicknesses ranging from 0.5mm to 20mm.
Providing good corrosion resistance, these pipes are manufactured using the electric resistance welding process. They are available in sizes from 1″ to 12″ in diameter, with various wall thicknesses for different pressure ratings.
These pipes, known for their corrosion resistance, are produced by longitudinal submerged arc welding. Sizes typically range from 6″ to 48″ in diameter, with wall thicknesses from 5mm to 25mm.
Offering excellent corrosion resistance, these pipes are used in various industries. They come in sizes from 1/4″ to 12″ in diameter, with wall thicknesses ranging from 1mm to 15mm.
These pipes exhibit good corrosion resistance and are made by welding flat plates. They are available from 1″ to 24″ in diameter, with wall thicknesses tailored to specific pressure and temperature requirements.
Stainless Steel 439 Pipes find extensive use in industries that require high corrosion resistance and heat stability. They are perfect for automotive exhaust systems, heat exchangers, and water heating equipment. In the construction sector, they are favored for both structural and decorative piping due to their strength and visual appeal. Moreover, these pipes are well-suited for chemical and food processing environments where hygiene and durability are crucial. Their cost-effectiveness, ease of fabrication, and superior oxidation resistance make 439 pipes a go-to choice for medium- to high-temperature industrial applications.
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