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Home > Stainless Steel >Stainless Steel 347 and 347H Instrumentation Tubing
Bosega Pipes and Tubes, located in Cape Town, South Africa, stands out as a trusted manufacturer and supplier of Stainless Steel 347 and 347H Instrumentation Tubing. Crafted for precision, durability, and top-notch performance, this tubing is perfect for critical applications that require resistance to high temperatures, pressure, and intergranular corrosion. Bosega’s 347/347H instrumentation tubing is produced with tight tolerances and adheres to international standards, making it an excellent choice for industries like petrochemical, oil and gas, power generation, and aerospace, where reliable signal transmission and fluid control are crucial.
Stainless Steel 347 is a niobium-stabilized austenitic stainless steel that excels in resisting intergranular corrosion, particularly after welding or exposure to heat. The 347H variant, with its higher carbon content, enhances creep strength and performance in high-temperature environments. Both grades boast impressive mechanical strength and oxidation resistance, even in harsh conditions. Instrumentation tubing made from 347 and 347H is particularly suited for high-temperature, high-pressure systems, thanks to its stability, weldability, and ability to maintain structural integrity during thermal cycling and exposure to corrosive substances.
| Grade | Range | Ni | C | Cr | Mn | Si | P | S |
|---|---|---|---|---|---|---|---|---|
| 347 | Min. | 9.0 | – | 17.0 | – | – | – | – |
| Max. | 13.0 | 0.08 | 20.0 | 2.00 | 1.00 | 0.040 | 0.030 | |
| 347H | Min. | 9.0 | 0.04 | 17.0 | – | – | – | – |
| Max. | 13.0 | 0.10 | 19.0 | 2.00 | 1.00 | 0.045 | 0.030 |
| Grade | Tensile Strength min (MPa) | Yield Strength 0.2% Proof min (MPa) | Hardness | Elongation (% in 50mm) min | |
|---|---|---|---|---|---|
| Brinell max (HB) | Rockwell B max (HR B) | ||||
| 347/347h | 515 | 205 | 201 | 92 | 40% |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Stainless Steel 347 and 347H Instrumentation Tubing finds extensive use in control lines, pressure sensing lines, analytical instrumentation, and chemical injection systems. It’s especially prized in refineries, offshore platforms, thermal power plants, and chemical processing facilities, where extreme operating conditions call for high-performance materials. The tubing’s smooth internal surface, exceptional corrosion resistance, and precise dimensional control ensure accurate measurements and reliable system maintenance.
Bosega Pipes and Tubes, one of the largest suppliers of Stainless Steel 316 and 316L Instrumentation Tubing in Cape Town, South Africa, 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.
| Grade | UNS No | Old British | Euronorm | Japanese JIS | Swedish SS | GOST | ||
|---|---|---|---|---|---|---|---|---|
| BS | En | No | Name | |||||
| 347 | S34700 | 347S31 | – | 1.4550 | X6CrNiNb18-10 | SUS 347 | 2338 | 08Ch18N12B |
| 347h | S34709 | – | – | 1.4961 | – | SUS 347h | – | – |
Yes, we offer custom sizes for Stainless Steel 347 and 347H Instrumentation Tubing to meet your specific requirements. Our team at Bosega Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@bosegapipes.co.za.
Stainless Steel 347 and 347H Instrumentation Tubing is widely used in various industries due to excellent corrosion resistance and high temperature stability Common applications are chemical reactions, where it dangerous waters go safely; energy production, for steam and gas; and space, for the interiors of the buildings. In addition, these vessels are used in oil and gas exploration, chemical manufacturing, and food processing equipment. Their durability and reliability make them suitable for instrument systems, ensuring precise measurement and control in challenging environments.
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