- sales@ojaspipesandtubes.co.in
- Kolkata, Kolkata
Home > Stainless Steel > Stainless Steel 347/347H Heat Exchanger Tubing
Ojas Pipes and Tubes is a reliable manufacturer and supplier of Stainless Steel 347/347H heat exchanger tubing based in Kolkata, India. We pride ourselves on delivering top-notch tubing designed for high-temperature and corrosive environments. Our 347/347H heat exchanger tubes are meticulously engineered to provide outstanding resistance to intergranular corrosion and exceptional mechanical performance even under thermal stress. With cutting-edge technology and rigorous quality controls, we serve a variety of industries, including chemical processing, power generation, and oil and gas. At Ojas Pipes and Tubes, we guarantee timely delivery, precise dimensions, and durable tubing solutions tailored for demanding heat transfer applications.
Our Stainless Steel 347/347H heat exchanger tubing features 17–20% chromium and 9–13% nickel, with niobium added to prevent carbide precipitation. The 347H grade stands out with a higher carbon content (0.04–0.10%) to boost its strength at elevated temperatures. These tubes boast a tensile strength of about 515 MPa, a yield strength of 205 MPa, and an elongation of up to 35%. They are highly resistant to intergranular corrosion and maintain their mechanical integrity even at high temperatures, offering excellent weldability and performance in continuous high-heat settings.
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 Ojas 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 Ojas Pipes and Tubes for your stainless steel needs and experience superior performance and service.
Ojas Pipes and Tubes, one of the largest suppliers of Stainless Steel 347/347H Heat Exchanger Tubing in Kolkata, India, 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 Ojas Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@ojaspipesandtubes.co.in.
| 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 |
You’ll find Stainless Steel 347/347H heat exchanger tubing widely used in high-temperature and corrosive environments where stability and durability are essential. In the chemical and petrochemical sectors, it’s commonly found in heat exchangers, condensers, and reactor cooling systems. Power plants utilize it for boiler tubing, superheaters, and reheaters thanks to its resistance to thermal fatigue. Refineries and gas processing facilities rely on these tubes for fluid catalytic cracking units and heater coils. With its superb weldability and resistance to oxidation and intergranular attack, it’s the perfect choice for long-term service in high-pressure, high-heat applications across various industries.
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