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Home > Stainless Steel > Stainless Steel 347 and 347H Seamless Pipes
Iris Pipes and Tubes stands out as a top-notch manufacturer and supplier located in Cairo, Egypt, focusing on high-quality Stainless Steel 347 and 347H Seamless Pipes. These pipes are crafted with precision to adhere to strict international standards, ensuring they offer remarkable strength, corrosion resistance, and durability even in tough industrial settings. Thanks to advanced seamless production techniques, they boast uniform wall thickness, exceptional dimensional accuracy, and dependable performance under high temperatures and pressures. Iris Pipes and Tubes is dedicated to providing long-lasting, high-performance piping solutions, consistently delivering quality and timeliness to industries like petrochemical, chemical processing, power generation, and aerospace, all while ensuring safe and efficient piping systems.
When it comes to composition, Stainless Steel 347 and 347H Seamless Pipes mainly consist of iron, chromium, nickel, and trace amounts of columbium (niobium), along with carbon, manganese, phosphorus, and sulfur. The inclusion of niobium helps stabilize the material and prevents sensitization during welding and high-temperature operations. These pipes showcase excellent tensile strength, yield strength, and resistance to corrosion and oxidation at elevated temperatures. The 347H variant, with its higher carbon content, offers improved creep and thermal stability. This specific chemical makeup and mechanical properties guarantee long-term durability, toughness, and reliable performance in seamless piping applications across a variety of industries.
Range : 6NB to 1200NB
Outer Diameter : 1/8″ NPS to 12″ NPS
Thickness : 0.6 mm to 12.7 mm
Schedules : SCH. 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XXS.
Length : Single Random, Double Random & Cut Length
Specifications : ASTM A312 / ASTM SA312
Types : Round, Square, Rectangle, Hydraulic, Honed Tubes
End : Plain End, Beveled End
| STANDARD | UNS | WERKSTOFF NR. |
| SS 347 | S34700 | 1.4550 |
| SS 347H | S34709 | 1.4961 |
| Ni | 09 – 13 | 09 – 13 |
| N | – | – |
| Cr | 17 – 20 | 17 – 19 |
| C | 0.08 max | 0.04 – 0.08 |
| Si | 1 max | 0.75 max |
| Mn | 2 max | 2 max |
| P | 0.045 max | 0.045 max |
| S | 0.030 max | 0.03 max |
| OTHER | Nb=10(C+N) – 1.0 | 8xC min – 1.00 max |
| Grade | 347 / 347H |
| Tensile Strength (MPa) min | 515 |
| Yield Strength 0.2% Proof (MPa) min | 205 |
| Elongation (% in 50mm) min | 40 |
| Hardness | |
| Rockwell B (HR B) max | 92 |
| Brinell (HB) max | 201 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Choosing Stainless Steel 347and 347H Seamless Pipes from Iris Pipes and Tubes guarantees exceptional corrosion resistance and high temperature performance. Their pipes are manufactured to exacting standards, ensuring reliability and durability for complex applications. With a focus on customer service, Iris offers customized solutions and technical support. In addition, the rugged design reduces leakage, making it reliable for a variety of applications.
Iris Pipes and Tubes, one of the largest suppliers of Stainless Steel 347 and 347H Seamless Pipes in Alexandria, Egypt, offers a comprehensive range of high-quality pipes and tubes suitable for various industrial applications. Their extensive inventory and commitment to exceptional service make them a go-to choice for stainless steel products in the region.
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 347 | S34700 | 347s31 | 58G | 1.4550 | X6CrNiNb18-10 | 2338 | SUS 347 |
Yes, we offer custom sizes for Stainless Steel 347and 347H Seamless Pipes to meet your specific requirements. Our team at Iris Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@irispipes.com.
You’ll find Stainless Steel 347 and 347H Seamless Pipes commonly used in high-temperature and corrosive environments, such as chemical plants, petrochemical facilities, boilers, heat exchangers, and exhaust systems. They’re perfect for applications that demand resistance to intergranular corrosion and thermal stress. Additionally, these pipes are utilized in power generation, refinery equipment, aerospace components, and furnace systems, where durability, strength, and high-temperature performance are essential. Their outstanding mechanical properties and corrosion resistance make them a go-to choice for many demanding applications.
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