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Home > Stainless Steel > Stainless Steel 347/347H Heat Exchanger Tubing
Laila Pipes is a trusted maker and supplier of Stainless Steel 347/347H Heat Exchanger Tubing, Muscat, OMAN, providing high-quality tubing solutions for processes involving high temperatures, pressure, and corrosive conditions. Withstand thermal stress and intergranular corrosion, Stainless Steel 347/347H Heat Exchanger Tubing is used in the Middle East’s most critical industries: power generation, chemical processing, petroleum refining, and the aerospace industry. Laila Pipes maintains strict quality control, size accuracy, and timely delivery to customers in the Middle East and international markets.
Stainless Steel 347/347H Heat Exchanger Tubing is manufactured from columbium (niobium)-stabilized austenitic stainless steel containing 17–20% chromium and 9–13% nickel. Grade 347 exhibits superior resistance to intergranular corrosion, particularly following welding, while 347H has a higher carbon content (up to 0.10%) for increased creep strength and high-temperature use. The tubing has a tensile strength of 515–750 MPa and a yield strength of approximately 205 MPa. Both grades exhibit mechanical stability and oxidation resistance in continuous service up to temperatures of 900°C.
Range : 10 mm OD to 50.8 mm OD
Outer Diameter : 6.00 mm to 101.60 mm
Wall Thickness : 0.70 mm to 8.00 mm
Length : up to 20 m (65.62 ft) Length & Customed Required Length
Specifications : ASTM A 213, A 268, A 269, A 789, Equivalent to ASME, EN, JIS Etc.
| Element | SS 347 | SS 347H |
| C | 0.08 max | 0.04 – 0.10 |
| Mn | 2.0 max | 2.0 max |
| Si | 1.0 max | 1.0 max |
| P | 0.045 max | 0.045 max |
| S | 0.030 max | 0.030 max |
| Cr | 17.00 – 20.00 | 17.00 – 19.00 |
| N | 10xC – 1.10 | 8xC – 1.10 |
| Ni | 9.00 – 13.00 | 9.0 -13.0 |
| Ti | 62.74 min | 63.72 min |
| Element | SS 347 | SS 347H |
| Density | 8.0 g/cm3 | 8.0 g/cm3 |
| Melting Point | 1454 °C (2650 °F) | 1454 °C (2650 °F) |
| Tensile Strength | Psi – 75000 , MPa – 515 | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 | Psi – 30000 , MPa – 205 |
| Elongation | 35 % | 35 % |
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 347/347H Heat Exchanger Tubing from Laila Pipes and Tubes ensures you receive high-quality products tailored to meet your specific requirements. Our tubing offers exceptional corrosion resistance and durability, ideal for high-temperature applications. We prioritize stringent quality control measures, ensuring each product meets industry standards. Additionally, our expert team provides personalized support, timely delivery, and competitive pricing, making us a reliable partner in your projects. Trust Laila Pipes and Tubes for your stainless steel needs and experience superior performance and service.
Laila Pipes and Tubes, one of the largest suppliers of Stainless Steel 347/347H Heat Exchanger 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.
Yes, we offer custom sizes for Stainless Steel 347/347H Heat Exchanger Tubing to meet your specific requirements. Our team at Laila Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@lailapipes.com.
| STANDARD | WERKSTOFF NR. | UNS | JIS | GOST | EN |
| SS 347 | 1.4550 | S34700 | SUS 347 | 08Ch18N12B | X6CrNiNb18-10 |
| SS 347H | 1.4878 | S34709 | SUS 347H | – | X6CrNiNb18-12 |
Stainless Steel 347/347H Heat Exchanger Tube is employed in applications where steady heat transfer performance under continuous exposure to heat, pressure, and corrosive environments is needed. Superheaters, boilers, reformers, condensers, and furnace items are typical uses. Grade 347 is suitable for welded constructions wherein sensitization should be avoided, whereas 347H is utilized in environments with elevated thermal loads and stress. These grades combine strength, thermal stability, and corrosion resistance that can withstand long service in harsh industrial operating conditions.
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