Weston Stainless, a Midland, UK-based company, is a premier distributor of high-quality stainless steel products, serving industries demanding high-strength and corrosion-resistant products. Their Stainless Steel 347 Tubing, an austenitic stainless steel stabilized by columbium (niobium), possesses outstanding resistance to intergranular corrosion and high-temperature oxidation. Produced in accordance with ASTM A213 and A269 standards, these tubes come in seamless, welded, and fabricated configurations. With better mechanical strength, thermal stability, and improved weldability, SS 347 tubing is a suitable option for those applications where exposure to high temperatures for extended periods and corrosive conditions are necessary.
Stainless Steel 347 Tubing has 17-19% chromium, 9-13% nickel, and columbium, which avoids carbide precipitation and improves corrosion resistance. The mechanical properties are tensile strength of 515 MPa, yield strength of 205 MPa, and elongation of 40%. Physical properties exhibit a density of 7.9 g/cm³, melting point around 1400°C, and thermal conductivity of 16.3 W/m-K. All these properties render SS 347 tubing remarkably resistant to thermal degradation, stress corrosion cracking, and oxidation.
| 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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Stainless Steel 347 Tubing has widespread applications in petrochemical, power generation, oil & gas, and aerospace industries because of its strength at high temperatures and resistance to oxidation. It is suited for use in heat exchangers, tubes in boilers, furnace parts, and superheater tubes. It is also utilized in chemical processing, food processing, and pharmaceutical industries where superior corrosion and longevity are imperative. Its tolerance for thermal cycling is a choice that is appealing in harsh industrial applications.
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.
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.
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.
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.
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.
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.
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.
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.
Weston Stainless offers Mill Test Certificates (MTC) according to EN 10204 3.1, maintaining global quality standards. The tubes are tightly packed within wooden crates, plastic-end capped pipes, or covered in protective material, avoiding transit damage. Through a well-established supply chain, Weston Stainless maintains timely and effective global delivery, satisfying industry needs with precision and reliability.
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