Walid Stainless, based in Tunis, Tunisia, is a trusted manufacturer and supplier of high-quality stainless steel products. Among their specialized offerings are Stainless Steel 439 Pipes, designed to deliver excellent corrosion resistance, durability, and stability in demanding industrial environments. Known for their performance under elevated temperatures and moderately corrosive conditions, these pipes are ideal for automotive, chemical, and structural applications. At Walid Stainless, each pipe is manufactured with precision and undergoes rigorous quality control to ensure consistent reliability. Clients depend on 439 Pipes for long-lasting, safe, and high-performing piping solutions in critical projects.
Stainless Steel 439 Pipes are made from a ferritic stainless steel alloy containing approximately 17–18% chromium. The low carbon content ensures excellent dimensional stability, while the ferritic structure provides moderate strength and high corrosion resistance. Typical tensile strength ranges from 450–600 MPa, with hardness around 170–200 HB. These pipes offer durability, wear resistance, and reliable performance under thermal and mechanical stress. Their composition makes them suitable for applications where resistance to oxidation, moderate corrosion, and long-term structural integrity are critical.
| 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 |
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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 are widely used in industries that require corrosion-resistant, durable, and thermally stable piping solutions. They are ideal for automotive exhaust systems, heat exchangers, furnace components, chemical processing equipment, and marine applications. Their ferritic structure ensures long-term dimensional stability, oxidation resistance, and mechanical reliability. Engineers and technicians rely on 439 Pipes for safe, efficient, and dependable fluid or gas transport in challenging conditions. Walid Stainless guarantees that every pipe meets stringent quality standards, providing a trustworthy solution for industrial, automotive, chemical, and marine applications requiring consistent performance and long-term durability.
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