Home > Stainless Steel > Stainless Steel 347 and 347H Electropolished Pipes
Liam Pipes and Tubes, one of the premier manufacturers in Houston, USA, is known for providing high-quality Stainless Steel 347 and 347H Electropolished Pipes to various industries. With experience spanning years and a robust emphasis on accuracy and sanitation, our electropolished pipes are suitable for industries such as pharmaceuticals, food processing, and chemical plants, where sanitation and corrosion resistance are crucial. These pipes are characterized by high-temperature stability, strength, and a smooth bore, which guarantees low contamination and long-lasting operation. At Liam Pipes and Tubes, we strive to provide dependable, effective, and industry-conforming piping solutions.
Stainless Steel 347 and 347H Electropolished Pipes are austenitic stainless steels containing 17–20% chromium, 9–13% nickel, and niobium for stabilization against intergranular corrosion. The major difference is in 347H, having more carbon content, providing increased creep strength at elevated temperatures. These pipes provide outstanding tensile strength, thermal stability, and corrosion resistance, especially where exposure is to humid and high-temperature conditions. Electropolishing increases the surface smoothness, providing better cleanliness and minimizing the potential for contamination—suitable for sanitary applications requiring consistent mechanical integrity and enhanced resistance to adverse processing conditions.
| 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 Liam 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.
Liam Pipes and Tubes, a leading manufacturer and supplier of Stainless Steel 347 and 347H Electropolished Pipes in Houston , USA, 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 Liam Pipes and Tubes provides tailored solutions for all your piping and tubing requirements. For more information, contact us at sales@liampipes.us.
Stainless Steel 347 and 347H Electropolished Piping is widely used in corrosive and high-temperature applications, such as chemical processing, petrochemical transportation, and power generation for heat exchangers and steam lines. In the field of aerospace, the temperature and structural resistance of these pipes make them highly desirable. The smooth electropolished surface of these pipes makes them suitable for use in food processing, pharmaceuticals, and sanitation, where hygiene and low bacterial adhesion are essential. From the movement of violent chemicals to providing sterile environments in cleanrooms, these pipes bring long-term durability, oxidation resistance, and simplicity of maintenance, satisfying exacting industry requirements.
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