Walid Stainless, based in Tunis, Tunisia, is a trusted manufacturer and supplier of stainless steel 347 tubing, engineered for high-temperature and corrosion-resistant applications. Produced using advanced manufacturing techniques and strict quality control, these tubes feature uniform dimensions, smooth surfaces, and consistent mechanical performance. Stainless steel 347 is a stabilized austenitic grade, containing niobium to prevent carbide precipitation, ensuring excellent resistance to intergranular corrosion. Walid Stainless supplies tubing to industries such as chemical processing, power generation, oil and gas, and industrial engineering, delivering durable, high-quality products with reliable performance and responsive customer support.
Stainless steel 347 is an austenitic stainless steel alloyed with chromium, nickel, and stabilized with niobium to enhance resistance to intergranular corrosion during welding and high-temperature service. It offers excellent tensile and yield strength, good ductility, and the ability to maintain mechanical integrity under prolonged exposure to heat. 347 tubing also exhibits strong resistance to oxidation and thermal fatigue. While its corrosion resistance is similar to 304, stabilization with niobium ensures durability in welded structures and high-temperature environments, making it suitable for long-term industrial applicatio
| Specifications | : | ASTM A/ASME SA249/A269/A270 |
| Dimensions | : | ASTM, ASME, and API |
| SS 304H Tubes Size | : | 1/8″NB TO 30″NB IN |
| Thickness | : | 1mm to 20mm, SCH 5/5S, 10/10S, 20/20S, 40/40S, 80/80S, 120/120S, 160/160S as per ANSI B36.19/36.10 |
| Finish | : | BA Finish inside and outside, Electropolished finish inside and outside |
| Type | : | Electropolished Pipes & Tubes |
| Form | : | Round, Square, Rectangular, Hydraulic Etc |
| Length | : | Up to 6 meters, custom cut lengths |
| Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
| SS 347 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 20.00 | 10xC – 1.10 | 9.00 – 13.00 | 62.74 min |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000, MPa – 515 | Psi – 30000, MPa – 205 | 35 % |
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We sets high standards regarding quality for stainless steel 347 tubing through multiple testing and evaluation procedures. Inspections are extensive and include determination of chemical compositions, mechanical testing, and testing by non-destruction methods on every product. Walid also offers full documentation in the form of Mill Test Certification.
Offering excellent corrosion resistance, Stainless Steel 347 Seamless Tubing is known for its uniformity and strength. It typically comes in sizes ranging from 6mm to 350mm in diameter and lengths of up to 6 meters. Ideal for applications requiring high pressure and corrosive resistance.
Stainless Steel 347 Welded Tubing provides superior resistance to chloride-induced stress corrosion cracking. Available in sizes from 10mm to 150mm in diameter and standard lengths of 6 meters. It is often used in industrial and chemical processing applications where weld strength is critical.
Featuring outstanding corrosion resistance, Stainless Steel 347 Heat Exchanger Tubes are used in demanding environments. Sizes typically range from 6mm to 50mm in diameter, with wall thickness varying from 1mm to 3mm. These tubes are designed for high temperature and pressure conditions.
Stainless Steel 347 Instrumentation Tubing offers excellent resistance to corrosion and is ideal for precise measurement systems. Common sizes include 1/8″ to 1/2″ in diameter and lengths up to 6 meters. It is suitable for high-pressure applications and harsh environments.
With superior resistance to both oxidation and corrosion, Stainless Steel 347 Boiler Tubes are used in high-pressure steam applications. Sizes typically range from 25mm to 100mm in diameter, with lengths of up to 6 meters. They are essential for maintaining efficiency in boiler systems.
Stainless Steel 347 U-tubes provide excellent resistance to corrosive fluids and are commonly used in heat exchangers. Standard sizes range from 10mm to 100mm in diameter with various lengths. They are designed to handle thermal expansion and contraction in dynamic environments.
Stainless Steel 347 Condenser Tubes are used in marine and power generation applications, offering exceptional resistance to seawater and acidic environments. Sizes typically range from 10mm to 50mm in diameter and lengths up to 6 meters, providing durability and efficiency.
Stainless Steel 347 Fin Tubes are designed for enhanced heat transfer and corrosion resistance in air-cooled heat exchangers. They are available in various diameters, commonly 25mm to 50mm, with fin lengths customizable to specific requirements, ensuring effective cooling in challenging environments.
Stainless steel 347 tubing is widely used in applications where high-temperature strength, corrosion resistance, and reliability are critical. It is commonly employed in chemical and petrochemical processing equipment, heat exchangers, boilers, and furnace components. In the oil and gas industry, 347 tubing is used for piping systems, pressure vessels, and high-temperature process lines. The food and pharmaceutical industries also utilize 347 tubing for equipment requiring sanitary and corrosion-resistant materials. Its stability during welding and exposure to thermal cycling makes stainless steel 347 tubing ideal for critical industrial, power generation, and high-temperature engineering applications.
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