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Home > Stainless Steel > Stainless Steel 347/347H Seamless Tubing
Tun Pipes, a trusted name in Naypyidaw’s industrial supply sector, takes pride in providing high-quality Stainless Steel 347/347H seamless tubing. We understand the critical demands of modern industry, which is why our tubing is sourced and supplied to meet the most rigorous standards. Our commitment lies in supporting Myanmar’s growing infrastructure and manufacturing projects with reliable, durable materials that ensure longevity and performance. When you partner with us, you gain more than just a product; you gain a dedicated ally committed to your project’s success and the highest level of service.
The strength of this particular grade lies in its composition, which is stabilized with columbium. This key addition provides exceptional resistance to intergranular corrosion following exposure to high temperatures, a common challenge in many industrial processes. This stabilization results in impressive mechanical properties, including excellent creep and stress rupture strength, making it well-suited for continuous high-temperature service. Essentially, the material is engineered to maintain its integrity and resist degradation under thermal stress, ensuring reliable performance in demanding environments.
Tube Range : 6.35 mm OD To 101.6 mm OD Guage: 25 SWG – 10 SWG
Outer Diameter : 3.00 mm – 219.10 mm
Wall Thickness : 0.40 mm – 12.70 mm
Schedules : 5, 10S, 10, 30, 40S, 40, 80, 80S, XS, 160, XXH
Length : Upto 30 meters, Custom Cut Lengths
Specifications : ASTM A213 / ASTM SA213
Types : Round, Square, Rectangle, Coil, “U” Shape, Hydraulic & Honed Tubes
| SS | 347 | 347H |
| Ni | 09 – 13 | 09 – 13 |
| N | – | – |
| Cr | 17 – 20 | 17 – 19 |
| C | 0.08 max | 0.04 – 0.08 |
| Si | 1 max | 1 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 347/347H seamless tubing from Tun Pipes and Tubes ensures you receive a product of exceptional quality and reliability. Our tubing is designed to withstand high temperatures and resist intergranular corrosion, making it ideal for demanding applications in the chemical, petrochemical, and aerospace industries. We adhere to strict quality control measures and offer comprehensive testing to ensure optimal performance. Our experienced team provides personalized solutions tailored to your specific requirements, guaranteeing customer satisfaction. Trust Tun Pipes and Tubes for durable, high-performance seamless tubing that meets the highest industry standards.
Tun Pipes and Tubes, one of the largest suppliers of Stainless Steel 347/347H Seamless Tubing in Naypyidaw, Myanmar, 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 Seamless Tubing to meet your specific requirements. Our team at Tun Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@tunpipes.com.
| 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 |
Stainless Steel 347/347H Seamless Tubing finds widespread applications in superheaters, heat exchangers, boiler tubes, reactor systems, and high-temperature chemical processing lines. The grade 347 is particularly suitable for welded systems where sensitization resistance is paramount, while 347H is used for continuous exposure at elevated temperatures with greater mechanical stresses. The tubes offer a reliable solution where thermal stability, corrosion resistance, and integrity are imperative for safe and efficient long-term operations.
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