Home > Stainless Steel > Stainless Steel 347 and 347H Electropolished Pipes
Tun Pipes, located in Naypyidaw, Myanmar, stands out as a top manufacturer and supplier of premium stainless steel products, with a focus on seamless tubing. They pride themselves on precision, durability, and keeping their customers happy, catering to a variety of industries that need dependable and corrosion-resistant piping solutions. One of their standout products is the Stainless Steel 321/321H seamless tubing, which is renowned for its outstanding performance in high-temperature and challenging environments. By utilizing cutting-edge manufacturing techniques and rigorous quality control, Tun Pipes guarantees that every tube meets international standards, making it the go-to choice for industrial, chemical, and engineering applications throughout Myanmar and Southeast Asia.
The Stainless Steel 321/321H seamless tubing is an austenitic chromium-nickel alloy that’s stabilized with titanium, which boosts its resistance to intergranular corrosion. It typically contains 17–19% chromium, 9–12% nickel, and titanium to enhance its stability at high temperatures. This tubing boasts impressive mechanical properties, with tensile strength ranging from 515–750 MPa and yield strength between 205–275 MPa, depending on the grade and heat treatment. Its elongation is usually 40% or more, providing flexibility without sacrificing strength. The 321H variant, with its higher carbon content, offers better creep resistance, making both grades perfect for extreme temperature and pressure situations.
| Specifications | : | ASTM A/ASME SA249/A269/A270 |
| Dimensions | : | ASTM, ASME, and API |
| SS 347 and 347H Pipes Size | : | 1/8″NB TO 30″NB IN |
| Thickness | : | 1mm to 20mm, SCH 5/5S, 10/10S, 20/20S, 40/40S, 80/80S, 120/120S, 160/160S as per ANSI B36.19/36.10 |
| Finish | : | BA Finish inside and outside, Electropolished finish inside and outside |
| Type | : | Electropolished Pipes & Tubes |
| Form | : | Round, Square, Rectangular, Hydraulic Etc |
| Length | : | Up to 6 meters, custom cut lengths |
| Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
| SS 347 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 20.00 | 10xC – 1.10 | 9.00 – 13.00 | 62.74 min |
| SS 347H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 8xC – 1.10 | 9.0 -13.0 | 63.72 min |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000, MPa – 515 | Psi – 30000, MPa – 205 | 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 and 347H Electropolished Pipes from Tun Pipes and Tubes guarantees excellent corrosion resistance, high strength, and durability. Designed for diverse industrial applications, it delivers reliable performance in tough environments while maintaining competitive pricing for cost-effective solutions.
Tun Pipes and Tubes, a leading manufacturer and supplier of Stainless Steel 347 and 347H Electropolished Pipes in Naypyidaw, Myanmar, offers a comprehensive range of high-quality pipes and tubing suitable for various industrial applications. Our extensive inventory and commitment to exceptional service make us a trusted choice for regional products.
| STANDARD | WERKSTOFF NR. | UNS | JIS | GOST | EN |
| SS 347 | 1.4550 | S34700 | SUS 347 | 08Ch18N12B | X6CrNiNb18-10 |
| SS 347H | 1.4961 | S34709 | SUS 347H | – | X6CrNiNb18-12 |
We offer custom sizes for Stainless Steel 347 and 347H Electropolished Pipes to meet your specific needs. Our dedicated team at Tun Pipes and Tubes provides tailored solutions for all your piping and tubing requirements. For more information, contact us at sales@tunpipes.com.
Stainless Steel 321/321H seamless tubing is commonly found in settings that demand high corrosion resistance and thermal stability. You’ll often see it in chemical processing, petrochemical plants, and power generation systems, where the tubes are exposed to high-temperature fluids and gases. Its exceptional strength and oxidation resistance make it ideal for exhaust systems, heat exchangers, and furnace components. Plus, it’s also used in the aerospace, food processing, and pharmaceutical industries, where hygiene and durability are key.
©2024 Tun Pipes and Tubes . All Rights Reserved.