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Home > Stainless Steel Tubing > Stainless Steel 347H Tubing
Laila Pipes and Tubes is a reputable manufacturer and supplier of top-notch Stainless Steel 347H Tubing based in Muscat, Oman. They specialize in precision-engineered tubing that adheres to international standards, specifically crafted to withstand high temperatures and corrosive environments. With state-of-the-art manufacturing facilities, rigorous quality control measures, and a skilled technical team, Laila Pipes and Tubes caters to various industries, including chemical processing, petrochemical, power generation, oil and gas, and aerospace. Their commitment to consistent quality, prompt delivery, and customer-centric service has helped them build a solid reputation in both regional and global markets.
Stainless Steel 347H Tubing is a higher-carbon form of stabilized austenitic stainless steel grade 347, with 17–20% chromium, 9–13% nickel, and columbium (niobium) as a stabilizer against carbide precipitation. The higher carbon content up to 0.10% improves the creep strength and performance at long-term high-temperature service. It has tensile strength of 515–750 MPa and a yield strength of about 205 MPa. The tubing has a stable mechanical property up to 900°C temperature and shows good weldability, oxidation resistance, and thermal cycling structural stability.
| SS 347H | 0.04 – 0.10 | 2 max | 1 max | 0.045 max | 0.030 max | 17 – 19 | 0.10 max | 9 – 12 | 4(C+N) – 0.70 max |
| SS 347H | 1.4961 | S34709 | SUS 347H | X12CrNiTi18-9 |
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 347H tubing is an austenitic stainless steel that’s stabilized with niobium (columbium) and features a higher carbon content, enhancing its creep strength at elevated temperatures. Typically, it contains 17–19% chromium and 9–13% nickel, which provides excellent resistance to intergranular corrosion and oxidation. This tubing boasts high tensile strength, good weldability, and remarkable dimensional stability, even when exposed to high temperatures for extended periods.
Laila Pipes and Tubes, one of the largest suppliers of Stainless Steel 347H Tubing in Muscat, OMAN, 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.
You’ll find Stainless Steel 347H tubing widely used in applications that demand long-lasting strength and corrosion resistance at elevated temperatures. It’s commonly found in heat exchangers, boiler and superheater tubing, chemical processing equipment, and petrochemical plants. The power generation and oil and gas sectors depend on it for high-temperature, high-pressure systems. Additionally, it’s well-suited for aerospace and industrial applications where thermal stability, durability, and reliable performance are crucial.
Stainless Steel 347H Tubing finds extensive use in applications related to continuous exposure to high pressure and heat, including superheaters, heat exchangers, furnace parts, chemical reactors, and piping systems under high temperature. It is best suited for power plants, refineries, and thermal processing facilities where stress rupture resistance and thermal fatigue resistance are essential. The high carbon concentration enables the tubing to maintain strength and dimensional stability in harsh service environments. Stainless Steel 347H Tubing is a reliable option for applications that need long service life, corrosion resistance, and mechanical integrity at high temperatures.
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