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Home > Stainless Steel > Stainless Steel 347 and 347H Welded Tubing
Iris Pipes and Tubes, located in Cairo, Egypt, has built a solid reputation as a manufacturer and supplier of **Stainless Steel 347 and 347H Welded Tubing**. They’re known for their commitment to delivering top-notch quality and precision-engineered products. The company specializes in providing durable, corrosion-resistant tubing solutions tailored to meet the diverse needs of various industrial sectors, both in Egypt and around the globe. These specific grades are particularly well-suited for high-temperature applications and environments that demand exceptional resistance to intergranular corrosion. With a strong emphasis on reliability, performance, and customer satisfaction, Iris Pipes and Tubes has established itself as a go-to choice in industries like petrochemical, power generation, oil and gas, and food processing.
Stainless Steel 347 and 347H Welded Tubing is composed of 17-19% chromium, 9-13% nickel, and 0.45% niobium offering excellent resistance to high-temperature oxidation and intergranular corrosion. With a tensile strength of 515 MPa and yield strength of 205 MPa, it provides exceptional stability and strength in extreme environments. The material’s excellent weldability and resistance to carbide precipitation make it ideal for use in heat exchangers, boilers, and pressure vessels, ensuring reliable performance and durability in high-temperature applications.
Welded Tubes Size : 1 / 8″ NB – 24″ NB
Specifications : ASTM A/ASME SA213, A249, A269, A312, A358
Standard : ASTM, ASME and API
Length : Single Random, Double Random & Required Length
Outer Diameter : 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB
Thickness : 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Types : Welded
Form : Round Tubes, Square Tubes, Rectangular Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes
End : Plain End, Beveled End, Treaded
| 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 % |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
**Stainless Steel 347 and 347H Welded Tubing** are niobium-stabilized austenitic stainless steels that typically contain around 17–19% chromium, 9–13% nickel, along with trace amounts of niobium and tantalum to boost resistance to carbide precipitation. The 347H grade features a higher carbon content, which enhances its high-temperature strength and creep resistance. Both grades are known for their impressive tensile and yield strength, good ductility, and remarkable oxidation resistance, even at temperatures reaching about 900°C. Their well-balanced chemical composition ensures excellent weldability, formability, and mechanical performance, especially in high-stress and corrosive environments.
Iris Pipes and Tubes is the largest supplier of Stainless Steel 317 and 317L Welded Tubing in Alexandria, Egypt. Known for its high-quality products. We offer superior corrosion resistance, strength, and durability. Trusted by industries worldwide they provide reliable precision-engineered tubing for various applications and project needs.
| STANDARD | WERKSTOFF NR. | UNS | JIS | GOST | EN |
| SS 347 | 1.4550 | S34700 | SUS 347 | 08Ch18N12B | X6CrNiNb18-10 |
| SS 347H | 1.4961 | S34709 | SUS 347H | – | X6CrNiNb18-12 |
You’ll find **Stainless Steel 347 and 347H Welded Tubing** widely used in applications where high-temperature strength and corrosion resistance are essential. They’re commonly found in heat exchangers, furnace components, boiler tubes, exhaust manifolds, and refinery equipment. These grades are particularly advantageous in chemical processing, oil and gas refining, aerospace, and power generation sectors. Their ability to resist intergranular corrosion makes them perfect for operations that involve repeated heating and cooling cycles. Plus, 347 and 347H welded tubing are highly valued in food processing and pharmaceutical facilities for their cleanliness, durability, and resistance to scaling and oxidation.
Stainless Steel 347 and 347H Welded Tubing is widely used in industries that require high-temperature resistance. And excellent corrosion resistance. It is ideal for applications in heat exchangers, boilers and pressure vessels. Where durability at elevated temperatures is crucial. Additionally it is used in chemical processing, aerospace and power generation industries, providing reliable performance in extreme environments. Its resistance to intergranular corrosion makes it suitable for applications involving hot gases, corrosive chemicals and high-pressure systems ensuring long-term reliability and strength.
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